Sennheiser Ventilation Hood EK 500 G2 User Manual

EK 500  
Instructions for use  
 
Contents  
The EK 500 G2 receiver ............................................................ 4  
The channel bank system .................................................. 4  
Safety instructions .................................................................... 5  
Areas of application .................................................................. 6  
Delivery includes ....................................................................... 6  
The operating controls ............................................................. 7  
Indications and displays .......................................................... 8  
LC display panel ................................................................... 8  
Indications and displays of the receiver ......................... 8  
Remote displays of an ew 500 G2 transmitter .......... 10  
Preparing the receiver for use ............................................. 11  
Inserting and replacing the batteries .......................... 11  
Inserting and charging the accupack ........................... 11  
Connecting units to the audio output .......................... 12  
Mounting the receiver to a camera .............................. 12  
Attaching the receiver to clothing ................................ 13  
Using the receiver .................................................................. 14  
Switching the receiver on/off ........................................ 14  
Connecting the headphones .......................................... 14  
Activating/deactivating the lock mode ....................... 15  
The operating menu .............................................................. 16  
The buttons ....................................................................... 16  
Overview of menus .......................................................... 17  
Working with the operating menu ............................... 17  
Operating menu of the receiver .................................... 19  
Adjustment tips for the operating menu .......................... 21  
Switching between channel banks ............................... 21  
Switching between the channels in a channel bank . 21  
Selecting the frequencies to be stored  
in the channel bank “U” .................................................. 21  
Scanning the channel banks for free channels .......... 22  
Multi-channel operation ................................................. 22  
Adjusting the audio output level .................................. 23  
Adjusting the squelch threshold ................................... 23  
Selecting the standard display ...................................... 24  
Entering a name ............................................................... 24  
Loading the factory-preset default settings .............. 24  
Activating/deactivating the pilot tone evaluation ... 25  
Activating/deactivating the lock mode ....................... 25  
Exiting the operating menu ........................................... 25  
Troubleshooting ..................................................................... 26  
Error checklist ......................................................... 26  
Recommendations and tips ........................................... 27  
Care and maintenance ........................................................... 27  
Additional information ......................................................... 28  
HDXnoise reduction ........................................................ 28  
Wireless transmission systems ..................................... 28  
Squelch ............................................................................... 29  
Specifications .......................................................................... 30  
Connector assignment .................................................... 31  
Accessories .............................................................................. 31  
Manufacturer declarations ................................................... 32  
Warranty regulations ...................................................... 32  
CE Declaration of Conformity ......................................... 32  
Batteries or rechargeable batteries .............................. 32  
WEEE Declaration ............................................................. 32  
3
 
The EK 500 G2 receiver  
The EK 500 G2 bodypack receiver is part of the evolution  
wireless series ew 500 G2. With this series, Sennheiser  
offers high-quality state-of-the-art RF transmission  
systems with a high level of operational reliability and ease  
of use. Transmitters and receivers permit wireless  
transmission with studio-quality sound. The excellent  
transmission reliability of the ew 500 G2 series is based on  
the use of  
y further optimized PLL synthesizer and microprocessor  
technology,  
y the HDX noise reduction system,  
y the pilot tone squelch control,  
y and the scan function for scanning the channel banks for  
free channels.  
The channel bank system  
The receiver is available in five UHF frequency ranges with  
1440 receiving frequencies per frequency range. Please  
note: Frequency usage is different for each country. Your  
Sennheiser agent will have all the necessary details on the  
available legal frequencies for your area.  
Range A:  
Range B:  
Range C:  
Range D:  
Range E:  
518 to 554 MHz  
626 to 662 MHz  
740 to 776 MHz  
786 to 822 MHz  
830 to 866 MHz  
The receiv er has nine channel banks with up to 20  
switchable channels each.  
channel 1  
channel 2  
preset frequency  
preset frequency  
channel bank 1...8  
preset frequency  
channel 20  
channel 1  
channel 2  
freely selectable frequency  
freely selectable frequency  
channel bank U  
freely selectable frequency  
channel 20  
Each of the channels in the channel banks “1” to “8” has  
been factory-preset to a receiving frequency (see enclosed  
frequency table). These receiving frequencies cannot be  
changed but have been preset so that e.g. country-specific  
regulations on frequency usage are taken into account.  
The channel bank “U” (user bank) allows you to store your  
selection out of 1440 receiving frequencies that are freely  
selectable within the preset frequency range.  
4
 
 
Safety instructions  
Never open an electronic unit! If units are opened by  
customers in breach of this instruction, the warranty  
becomes null and void.  
Use the unit in dry rooms only.  
Use a damp cloth for cleaning the unit. Do not use any  
cleansing agents or solvents.  
Attention! HighVolume!  
This is  
a
professional transmission  
system. Commercial use is subject to the  
rules and regulations of the trade  
association responsible. Sennheiser, as  
the manufacturer, is therefore obliged to expressly point  
out possible health risks arising from use.  
This system is capable of producing sound pressure  
exceeding 85 dB(A). 85 dB(A) is the sound pressure  
corresponding to the maximum permissible volume which  
is by law (in some countries) allowed to affect your hearing  
for the duration of a working day. It is used as a basis  
according to the specifications of industrial medicine.  
Higher volumes or longer durations can damage your  
hearing. At higher volumes, the duration must be  
shortened in order to prevent damage. The following are  
sure signs that you have been subjected to excessive noise  
for to o long a time:  
y You can hear ringing or whistling sounds in your ears.  
y You have the impression (even for a short time only) that  
you can no longer hear high notes.  
5
 
Areas of application  
The receiver can be combined with transmitters of the  
ew 500 G2 series (SK 500 G2 bodypack transmitter,  
SKM 500 G2 radiomicrophone or SKP 500 G2 plug-on  
transmitter). The transmitters are available in the same  
five UHF frequency ranges and are equipped with the same  
channel bank system with factory-preset frequencies. An  
advantage of the factory-preset frequencies is that  
y a transmission system is ready for immediate use after  
switch-on,  
y several transmission systems can be operated  
simultaneously on the preset frequencies without  
causing intermodulation interference.  
Together with a matching transmitter and a microphone,  
the receiver is suitable for the following areas of  
application:  
Receiver  
Transmitter (to be  
ordered separately)  
Area of application  
SK 500 G2  
y Theater  
y Presentation  
y Sports (aerobic)  
y Vo cals  
y Using instruments  
wirelessly  
EK 500 G2  
y Camera-mounted  
applications  
SKM 500 G2  
SKP 500 G2  
y Speech  
y Vo cals  
y Presentation  
y Camera-mounted  
applications  
y Speech  
y Vo cals  
y Presentation  
y Camera-mounted  
applications  
Delivery includes  
The packaging contains the following items:  
y 1 EK 500 G2 bodypack receiver  
y 2 batteries  
y 1 camera kit  
y 1 bodypack pouch  
y 1 line cable with 3.5 mm jack plug  
y 1 line output cable with XLR-3 plug  
y Instructions for use  
6
 
The operating controls  
·
»
Ƹ
³
¹
¸
¿
´
²
º
¾
µ
³ Headphone output (PHONES), 3.5 mm jack socket  
· Antenna  
» Red LED for operation and  
battery status indication (ON/LOW BAT)  
¿ Green LED for RF signal indication (RF)  
´ Charging contacts  
² SET button  
̄/̆ rocker button (DOWN/UP)  
and adjust the headphone volume  
º Battery compartment  
¾ Battery compartment cover  
µ Unlocking button  
¸ ON/OFF button  
(serves as the ESC (cancel) key in the  
operating menu)  
¹ LC display  
Ƹ Audio output (AF OUT), 3.5 mm jack socket  
(balanced)  
7
 
Indications and displays  
LC display panel  
ቩ ቪ  
Alphanumeric display  
B.CH“ – appears when the channel bank and  
the channel number are displayed  
“MHz“ – appears when the frequency is displayed  
4-step battery status display  
Lock mode icon  
(lock mode is activated)  
“PILOTdisplay  
(pilot tone evaluation is activated)  
“MUTE” display  
(audio output is muted)  
7-step level display for received audio signal “AF”  
7-step level display for received RF signal “RF”  
Indications and displays of the receiver  
When used together with an ew 500 G2 transmitter, the  
receiver provides information on its operating states and  
those of the received transmitter (remote displays).  
Operation and battery status indication  
The red LED (LOW BAT/ON) provides information on the  
current operating state of the receiver:  
»
Red LED lit up:  
Red LED flashing:  
8
The receiver is switched on and the  
capacity of the batteries/BA 2015  
accupack is sufficient.  
The batteries are/the BA 2015  
accupack is going flat (LOW BAT)!  
 
In addition, the 4-step battery status display on the  
display panel provides information on the remaining  
battery/BA 2015 accupack capacity:  
3 segments:  
2 segments:  
1 segment:  
capacity approx. 100 %  
capacity approx. 70 %  
capacity approx. 30 %  
Battery icon flashing: LOW BAT  
RF signal indication  
The green LED (RF) at the front of the receiver lights up  
when an RF signal is being received.  
¿
“PILOT” display  
The “PILOT” display appears on the display panel when  
the pilot tone evaluation is activated (see Activating/  
Display backlighting  
After pressing a button, the display remains backlit for  
approx. 15 seconds.  
9
 
Remote displays of an ew 500 G2  
transmitter  
MUTE” display  
The “MUTE” display appears on the display panel when  
y the RF signal of the received transmitter is too weak,  
y the received transmitter has been muted (with the pilot  
tone transmission or evaluation activated).  
Mo dulation display  
The level display for audio signal “AF” shows the  
modulation of the received transmitter.  
When the transmitter’s audio input level is excessively  
high, the receiver’s level display for audio signal “AF” ቧ  
shows full deflection.  
10  
 
Preparing the receiver for use  
Inserting and replacing the batteries  
For powering the receiver, two 1.5 V AA size batteries are  
required.  
̈ Press the two unlocking buttons µ and open the  
battery compartment cover .  
µ
¾
¾
´
̈ Insert the two batteries as shown above. Please observe  
correct polarity when inserting the batteries.  
̈ Close the battery compartment. The battery  
compartment cover locks into place with an audible  
click.  
Inserting and charging the accupack  
The receiver can also be powered via the rechargeable  
Sennheiser BA 2015 accupack. Insert the accupack into the  
battery compartment as described above.  
The receiver has two charging contacts and a sensing  
contact on its short sides. The accupack can be recharged  
while remaining in the receiver. Insert the receiver into the  
L 2015 charger (see operating manual of the L 2015  
charger).  
Note:  
For accupack operation of the receiver, only use the  
BA 2015 accupack in order to ensure optimum  
operational reliability. For charging the accupack, only  
use the L 2015 charger. Both the accupack and the  
charger are available as accessories.  
The accupack is fitted with an integrated sensor which is  
– via a third contact – monitored by the electronics of  
the receiver and the charger. The sensor is necessary for  
the following control purposes:  
y The taking into account of the different voltage cha-  
racteristics of primary cells (batteries) and accupacks.  
The battery status indications on the displays and the  
switch-off thresholds at the end of the operating time  
11  
 
are corrected correspondingly. Due to themissing sen-  
sor, individual rechargeable battery cells will not be  
identified as accupacks.  
y The monitoring of the accupack temperature during  
charging in the L 2015 charger.  
y The prevention of improper charging of inserted pri-  
mary cells (batteries). Due to the missing sensor, indi-  
vidual rechargeable battery cells will also not be  
charged in the L 2015 charger.  
Connecting units to the audio output  
You can connect a PA system or a recording unit (e.g. video  
camera) to the receiver.  
̈ Connect one of the supplied line output cables to the  
recording unit.  
̈ Connect the 3.5 mm jack plug to the audio output (AF  
OUT) ¹.  
¹
̈ Lock the 3.5 mm jack plug by screwing down the  
coupling ring.  
̈ Via the operating menu, adapt the level of the audio  
output (AF OUT) to the input sensitivity of the  
Mounting the receiver to a camera  
Use the supplied camera kit to mount the receiver to the  
camera’s flash mount.  
The camera kit consits of:  
y 1 perforated plate ¹  
y 1 flash mount adapter Ƹ  
y 2 square nuts ƹ  
̈ Determine where on the perforated plate the flash  
mount adapter Ƹ will need to be fastened so that the  
receiver can best be attached to the camera.  
̈ At this position, place a square nut ƹ under the  
perforated plate ¹.  
12  
 
̈ Fasten the flash mount adapter to the perforated plate  
using the square nut.  
Ƹ
¹
ƹ
̈ Remove the belt clip.  
̈ Place the perforated plate ¹ onto the rear of the  
receiver.  
̈ Reinsert the belt clip.  
Attaching the receiver to clothing  
The receiver is attached to clothing (e.g. belt, waistband)  
with the supplied belt clip.  
The clip is detachable so that you can also attach the  
receiver with the antenna pointing downwards. To do so,  
withdraw the clip from its fixing points and attach it the  
other way round.  
The supplied bodypack pouch helps to protect the receiver  
against moisture.  
13  
 
Using the receiver  
Switching the receiver on/off  
The receiver can only be switched off when the standard  
display is shown on the display panel. When in the  
operating menu, briefly pressing the ON/OFF button will  
cancel your entry (ESC function) and return you to the  
standard display with the last stored settings.  
Note:  
Remove the batteries or the accupack when the receiver  
will not be used for extended periods of time.  
̈ Press the two unlocking buttons µ and open the  
battery compartment cover ¾.  
»
¸
¾
µ
̈ Press the ON/OFF button ¸ to switch the receiver on.  
The red LED » lights up.  
̈ To switch the receiver off, press the ON/OFF button ¸  
until OFF” appears on the display. The red LED » goes  
off.  
̈ Close the battery compartment. The battery  
compartment cover ¾ locks into place with an audible  
click.  
Connecting the headphones  
̈
To monitor the audiosignal, connect headphones with a  
3. 5 mm jack plug to the headphone output (PHONES)  
.  
³
14  
 
Attention! High volume!  
Even short exposure to high volume levels will damage  
your hearing!  
Set the volume for the connected headphones to the  
minimum before putting the headphones on.  
̈ First, use the ̄/̆ rocker button to set the volume for  
the connected headphones to the minimum. Then  
gradually increase the volume.  
Volume up? – NO!  
When people use headphones, they tend to choose a  
higher volumethan with loudspeakers. Listening at high  
volume levels for long periods can lead to permanent  
hearing defects. Please protectyour hearing, Sennheiser  
headphones have an excellent sound quality even at low  
volumes.  
Activating/deactivating the lock mode  
The receiver has a lock mode that can be activated or  
deactivated via the operating menu (see Activating/  
prevents that the receiver is accidentally programmed or  
switched off during operation.  
15  
 
The operating menu  
A special feature of the Sennheiser ew 500 G2 series is the  
similar, intuitive operation of transmitters and receivers. As  
a result, adjustments to the settings can be made quickly  
and “without looking” – even in stressful situations, for  
example on stage or during a live show or presentation.  
The buttons  
Buttons Mode  
To...  
ON/OFF Standard display switch the receiver on and  
off  
Operating menu cancel the entry and return  
to the standard display  
Setting mode  
cancel the entry and return  
to the standard display  
SET  
Standard display get into the operating menu  
Operating menu get into the setting mode of  
the selected menu  
Setting mode  
store the settings and  
return to the top menu level  
̆/̄  
Standard display adjust the headphone  
volume  
Operating menu change to the previous  
menu (̆) or change to the  
next menu (̄)  
Setting mode  
adjust the setting of the  
selected menu:  
option (̆/̄)  
16  
 
Overview of menus  
Display Function of the menu  
BANK  
CHAN  
Switching between channel banks  
Switching between the channels in a channel  
bank  
TUNE  
SCAN  
Setting a receiving frequency for the channel  
bank “U” (user bank)  
Scanning the channel banks for free channels  
AF OUT Adjusting the audio output level  
SQELCH Adjusting the squelch threshold  
DISPLY Selecting the standard display  
NAME  
RESET  
PILOT  
Enteri ng a name  
Loading the factory-preset default settings  
Activating/deactivating the pilot tone  
evaluation  
LOCK  
EXIT  
Activating/deactivating the lock mode  
Exiting the operating menu and returning to the  
standard display  
Working with the operating menu  
By way of example of the “TUNE” menu, this section  
describes how to use the operating menu.  
After switching the receiver on, the standard display is  
shown on the display panel.  
Getting into the operating menu  
̈ Press the SET button to get from the standard display  
into the operating menu. The lastselected menu flashes  
on the display.  
Selecting a menu  
̈ Press the ̆/̄ rocker button to select a menu.  
17  
 
̈ Press the SET button to get into the setting mode of the  
selected menu. The current setting thatcan be adjusted  
flashes on the display.  
Adjusting a setting  
̈ Press the ̆/̄ rock er button to adjust the setting. The  
new setting becomes effective immediately.  
By briefly pressing the ̆/̄ rocker button, the display  
jumps either forwards or backwards to the next setting.  
In the “ CHAN”, “TUNE” and “NAME” menu, the ̆/̄  
rocker button features a “fast search” function. If you  
hold down a button, the display cycles continuously,  
allowing you to get fast and easily to your desired  
setting. The new setting flashes on the display until it is  
stored.  
Storing a setting  
̈ Press the SET button to store the setting. “STORED”  
appears on the display, indicating that the setting has  
been stored. The display then returns to the top menu  
level.  
Exiting the operating menu  
̈ Select the “EXIT” menu to exit the operating menu and  
to return to the standard display.  
When in the operating menu, briefly pressing the  
ON/OFF button will cancel your entry (ESC function) and  
return you to the standard display with the last stored  
settings.  
18  
 
Operating menu of the receiver  
SET  
EXIT  
SET  
BANK 1  
BANK U  
BANK  
Changing the channel  
bank  
̆ /  
̄
:
1...8, U (User  
Bank)  
Current channel bank  
SET: Stores the setting  
STORED  
SET  
1.01  
1.18  
CHAN  
B . CH 790.025  
B . CH 790.100  
Changing the channel  
Current channel  
(display depends on  
"DISPLY" setting)  
̆ /  
̄
:
Channel 01...20  
SET: Stores the setting  
STORED  
SET  
790.025  
791.125  
TUNE  
Current frequency on  
the selected channel  
̆ /  
̄:  
Receiving  
Setting the frequency  
for channel bank "U"  
frequency in steps of  
25 kHz  
SET: Stores the setting  
STORED  
SET  
START  
CLEAR  
SCAN  
̆ /  
̄
:
CLEAR, START  
Scanning the selected  
channel bank for free  
channels  
Start scan = START  
SET: Scans the selected  
channel bank for free  
channels  
12 CH FREE  
SET  
Delete result = CLEAR  
SET: Releases locked  
channels  
STORED  
SET  
LEV +18  
LEV -24  
AF OUT  
Setting the audio output  
level  
Current audio output  
level  
̆ / ̄: +18...0...-24 dB  
(in steps of 6 dB)  
SET: Stores the setting  
STORED  
SQ LO  
SET  
SQ HI  
SQELCH  
̆ /  
̄
:
LO, MID, HI  
Setting the squelch  
threshold  
Current squelch  
threshold  
SET: Stores the setting  
STORED  
DISPLY  
19  
 
SQELCH  
SET  
FREQ  
NAME  
DISPLY  
Switching between the  
standard displays  
Current standard display  
̆ /  
̄
: FREQ, NAME,  
CHAN  
SET: Stores the setting  
STORED  
SET  
NAME  
VOCAL  
GUCAL  
Assigning the receiver  
a name  
Current receiver name  
̆ /  
̄:  
Enter a name  
(6 characters)  
Letters w/o pronounciation  
marks, numbers from 0...9,  
special characters, spaces  
STORED  
SET: 5 x next character,  
then store  
SET  
RST. NO  
RST. OK  
RESET  
̆ /  
̄:  
OK, NO  
Security check  
Loading the factory-  
preset default settings  
"reset" = OK:  
SET: Receiver loads  
factory-preset default  
settings (only pilot tone  
setting is kept), receiver is  
restarted, standard display  
appears  
"reset" = NO  
SET: Reset is cancelled  
SET  
PLT. ON  
PLT. OFF  
PILOT  
Pilot tone evaluation  
Activating/deactivating  
the pilot tone evaluation  
̆ /  
̄:  
ON, OFF  
activated or deactivated  
SET: Stores the setting  
STORED  
LOC.OFF  
SET  
LOC.ON  
LOCK  
Lock mode activated or  
deactivated  
Activating the lock mode  
̆ /  
̄:  
ON, OFF  
Lock mode = ON:  
SET: Stores the setting  
("STORED"), returns to  
standard display  
Lock mode = OFF:  
SET: Stores the setting  
STORED  
SET  
EXIT  
Exiting the operating  
menu  
BANK  
VOL. 00  
VOL. 15  
Current volume  
̆ /  
̄:  
VOL. 00...50  
Adjusting the volume  
20  
 
Adjustment tips for the  
operating menu  
Switching between channel banks – BANK  
Via the “BANK” menu, you can switch between the  
receiver’s nine channel banks. Each of the channel banks  
“1” to “8” has up to 20 switchable channels that are  
factory-preset to a receiving frequency (see “The channel  
bank systemon page 4). The channel bank “U” (user  
bank) has up to 20 switchable channels to store your  
selection out of 1440 receiving frequencies that are freely  
selectable within the preset frequency range.  
When switching from one channel bank to another, the  
channel with the lowest channel number is automatically  
displayed. If, during the last scan of this channel bank, an  
interfering frequency was detected on the channel with the  
for free channelson page 22), the receiver display panel  
automatically displays the next free channel.  
Switching between the channels in a channel  
bank – CHAN  
Via the “CHANmenu, you can switch between the different  
channels in a channel bank. When switching between the  
channels, please observe the following:  
y Always set the transmitter and the receiver of a  
transmission link to the same channel.  
y After scanning the channel banks (see “Scanning the  
free channels can be chosen on the receiver. Set the  
transmitter and the receiver to one of the free channels.  
Selecting the frequencies to be stored  
in the channel bank “U” – TUNE  
Via the “TUNE” menu, you can select the frequencies to be  
stored in the channel bank “U” (user bank).  
When you have selected one of the channel banks “1” to  
8” and then select the TUNE” menu, the receiver  
automatically switches to channel 01 of the channel bank  
“U”. In this case, “U.01” briefly appears on the display.  
21  
 
 
̈ Use the ̆/̄ rocker button to select the desired  
receiving frequency. Your selection becomes effective  
immediately. Receiving frequencies are tunable in  
25-kHz steps within a switching bandwidth of 36 MHz  
max. For intermodulation-free frequencies, please refer  
to the enclosed frequency table.  
Scanning the channel banks for free  
channels – SCAN  
Before putting one or several ew 500 G2transmission links  
into operation, you should scan the channel banks for free  
channels.  
Starting the scan and storing the scan result  
̈ Before starting the scan, switch all transmitters of your  
system off, since channels used by switched-on  
transmitters will not be displayed as “free channels”.  
̈ Select the channel bank that you want to scan for free  
̈ Select the “SCAN” menu.  
̈ Select “START” and confirm your selection by pressing  
the SET button. After the scan is completed, the number  
of free channels is displayed. Pressing the SET button  
once morewill store the scan result and lock all channels  
that are used or subject to interference.  
Releasing locked channels  
̈ First, select the channel bank whose locked channels you  
̈ Select the “SCAN” menu.  
̈ Select “CLEAR” and confirm your selection by pressing  
the SET button. All channels in this channel bank can  
now be selected again.  
Multi-channel operation  
Combined with ew 500 G2 transmitters, the receiver can  
form transmission links that can be used in multi-channel  
systems. For multi-channel operation, only use the free  
channels in a channel bank.  
Before putting the transmission links into operation, we  
recommend performing an auto scan.  
̈ Select a channel bank on a receiver.  
̈ Scan this channel bank for free channels. If not enough  
free channels are available in the selected channel bank,  
repeat the scan with another channel bank.  
̈ Apply the scan result to all other receivers and  
transmitters.  
22  
 
 
Adjusting the audio output levelAF OUT  
Via the “AF OUT” menu, you can adjust the audio output  
level of the receiver. The level can be adjusted in eight  
steps. Adapt the level of the audio output (AF OUT) to the  
input of the connected unit. The following figures are a  
guide to the best settings:  
y Line level input:  
0 to +18 dB  
y Microphone level input: 24 to 6 dB  
Adjusting the squelch thresholdSQELCH  
Thereceiver is equipped with a squelch that can be adjusted  
via the “SQELCH” menu. The squelch eliminates annoying  
noise when the transmitter is switched off. It also  
suppresses sudden noise when there is no longer sufficient  
transmitter power received by the receiver.  
Note:  
Before adjusting the squelch threshold to a different  
setting, set the volume on a connected amplifier to the  
minimum.  
There are three possible squelch settings:  
y LO  
y MID = m iddle  
y HI = high  
= low  
Selecting the setting “LO” reduces the squelch threshold,  
selecting the setting “HI” increases the squelch threshold.  
Adjust the squelch threshold – with the transmitter  
switched off – to the lowest possible setting that  
suppresses hissing noise.  
Important notes:  
If the squelch threshold is adjusted too high, the  
transmission range will be reduced. Therefore, always  
adjust the squelch threshold to the lowest possible  
setting.  
When in the setting mode of the “SQELCH” menu,  
pressing the ̄ button (DOWN) for more than three  
seconds will switch the squelch off. “SQ.OFF” appears on  
the display. If no RF signal is being received, hissing  
noise will occur. This setting is for test purposes only.  
23  
 
   
Selecting the standard display – DISLPY  
Via the “DISPLY” menu, you can select the standard display:  
Selectable standard display Contents of standard display  
FREQ”  
NAME”  
“CHAN”  
Entering a name – NAME  
Via the “NAME” menu, you can enter a freely selectable  
name for the receiver. You can, for example, enter the name  
of the performer for whom the adjustments have been  
made.  
The name can be displayed on the standard display and can  
consist of up to six characters such as:  
y letters (without pronounciation marks),  
y numbers from 0 to 9,  
y special characters e.g. () - . _ and spaces.  
To enter a name, proceed as follows:  
̈ Press the SET button to get into the setting mode of the  
NAME” menu. The first segment starts flashing on the  
display.  
̈ With the ̆/̄ rocker button you can now select a  
character. By briefly pressing a button, the display  
jumps either forwards or backwards to the next  
character. If you hold down a button, the display starts  
cycling continuously.  
̈ Press the SET button to change to the next segment and  
select the next character.  
̈ Have you entered the name completely? Press the SET  
button to store your setting and to return to the top  
menu level.  
Loading the factory-preset default  
settings – RESET  
Vi a the “RESETmenu, you can load the factory-preset  
default settings. Onlythe selectedsetting for the pilot tone  
remainsunchanged. Afterthereset, the receiver isrestarted  
and the standard display is shown on the display panel.  
24  
 
Activating/deactivating the pilot tone  
evaluationPILOT  
Via the “PILOT” menu, you can activate or deactivate the  
pilo t to ne evaluation.  
The pilot tone supports the receiver’s squelch function  
(Squelch) and protects against interference due to RF  
signals from other units. The transmitter adds an inaudible  
signal, known as the pilot tone, to the transmitted signal.  
The receiver detects and evaluates the pilot tone, and is  
thus able to identify the signal of the matching transmitter  
and mute all others.  
Transmitters of the ew 500 series (first generation) do not  
transmit a pilot tone and the receivers of the ew 500 series  
(first generation) cannot evaluate the pilot tone.  
Nevertheless, you can combine the EK 500 G2 receiver with  
a transmitter of the first generation. However, when  
combining units, please observe the following:  
y With an ew 500 G2 transmitter and the ew 500 G2  
receiver:  
Activate the pilot tone function with both transmitter  
and receiver.  
y With an ew 500transmitter and the ew 500 G2receiver or  
vice versa:  
Deactivate the pilot tone function with the ew 500 G2  
transmitter or receiver.  
Activating/deactivating the lock mode – LOCK  
Via the “LOCK” menu, you can activate or deactivate the  
lock mode.  
The lock mode prevents that the receiver is accidentally  
programmed or switched off during operation. The lock  
mode icon on the display indicates that the lock mode is  
activated.  
To deactivate the lock mode, first press the SET button and  
then press the ̆/̄ rocker button to select “LOC.OFF”. If  
you confirm your selection by pressing theSET button, the  
buttons can be operated as usual.  
Exiting the operating menu – EXIT  
Via the “EXIT” menu, you can exit the operating menu and  
return to the standard display.  
25  
 
   
Troubleshooting  
Error checklist  
Problem  
Possible cause  
Possible solution  
No  
operation  
indication  
Batteries are flat or  
accupack is flat  
Replace the  
batteries or recharge  
the accupack  
No RF signal Receiver and  
transmitter are not  
Set receiver and  
transmitter to the  
on the same channel same channel  
Transmitter is out of Check the squelch  
range  
threshold setting  
or reduce the  
distance between  
transmitter and  
receiving antenna  
RF signal  
available,  
no audio  
signal,  
“MUTE”  
display  
appears on  
the display  
panel  
Transmitter is muted Deactivate the  
(“MUTE”)  
muting function  
(see operating  
manual of the  
transmitter)  
Receiver’s squelch  
See “Adjusting the  
threshold is adjusted squelch threshold”  
to o high on page 23  
Transmitter doesn’t S witch the pilot to ne  
transmit a  
pilot tone  
transmission on the  
transmitter on or  
s witch the pilo t to ne  
evaluation on the  
receiver off  
Audio signal Transmitter  
Adjust the  
has a high  
level of  
sensitivity is  
adjusted too low  
transmitter  
sensitivity correctly  
background  
noise  
Receiver’s AF output See “Adjusting the  
level is adjusted too audio output level”  
low  
Audio signal Transmitter  
is distorted sensitivity is  
Adjust the  
transmitter  
adjusted too high  
sensitivity correctly  
Receiver’s AF output See “Adjusting the  
level is adjusted too audio output level”  
high  
No access to During scanning, an See “Scanning the  
a certain  
channel  
RF signal has been  
detected on this  
channel and the  
channel has been  
locked  
free channelson  
If problems occur that are not listed in the above table or if  
the problems cannot be solved with the proposed solutions,  
please contact your local Sennheiser agent for assistance.  
26  
 
Recommendations and tips  
... for optimum reception  
y Transmission range depends to a large extent on location  
and can vary from about 10 m to about 150 m. There  
should be a “free line of sight” between transmitting and  
receiving antennas.  
y To avoid overmodulating the receiver, observe a  
minimum distance of 5 m between transmitting and  
receiving antennas.  
... for multi-channel operation  
y For multi-channel operation, you can only use the  
channels in a channel bank. Each of the channel banks 1”  
to “8” accommodates up to 20 factory-preset  
frequencies which are intermodulation-free. For  
alternative frequency combinations, please refer to the  
enclosed frequency table. The freely selectable  
frequencies can be selected via the “TUNE” menu and can  
be stored in the channel bank “U”.  
y When using several transmitters simultaneously,  
interference can be avoided by maintaining a minimum  
distance of 20 cm between two transmitters.  
Care and maintenance  
Use a slightly damp cloth to clean the receiver from time to  
time.  
Note:  
Do not use any cleansing agents or solvents.  
27  
 
Additional information  
HDX noise reduction  
RF link  
Inherent noise  
of the RF link  
Receiver  
Transmitter  
Progress you can hear:  
The evolution wireless G2 series is equipped with HDX, the  
Sennheiser noise reduction system that reduces RF  
interference. It increases the signal-to-noise ratio in  
wireless audio transmission to more than 110 dB.  
HDX is a wideband compander system which compresses  
the audio signal in the transmitter in a 2:1 ratio (related to  
dB) to lift it above the inherent noise floor of the RF link. A  
110 dB dynamic range signal is thus transmitted with an  
effective dynamic range of only 55 dB, which is above the  
60 dB noise floor of the RF link. In the receiver the signal is  
expanded in an identical and opposite way in a 1:2 ratio to  
restore the original signal, at the sametime reducing the RF  
noise to below the noise floor of the receiver.  
HDX has been specially developed for high quality  
radiomicrophone systems.  
Note:  
Only transmitters and receivers that are equipped with  
HDX can work correctly with each other. If non HDX  
equipment was mixed with HDX, the dynamic range  
would be drastically reduced and the transmission  
would sound blunt and flat. HDX is permanently active  
and cannot be switched off.  
Wireless transmission systems  
With the ew 500G2 series, Sennheiser puts an end to cable  
tangles and enables complete freedom of movement. The  
systems operate exclusively in the UHF band. UHF  
transmission is extremely reliable and is far less prone to  
interference than the overcrowded VHF band – harmonics  
from mains units, fluorescent tubes, refrigerators,  
computers, etc. are virtually eliminated. Also indoor  
propagation of UHF radio waves is better than VHF so that  
the RF power can be kept low – this is also an advantage  
28  
 
when using multi-channel systems. Finally, UHF frequency  
ranges are being approved all over the world for  
radiomicrophone usage – in some countries licence-free.  
Squelch  
Pilot tone squelch  
The ew 500 G2 transmitters add a pilot tone to the audio  
signal. The receiver checks incoming audio signals to see if  
the pilot tone is present. In the absence of the pilot tone,  
the receiver’s audio output will remain muted, even if a  
strong RF signal is present.  
This prevents strong interfering signals from causing  
hissing noise in the receiver when the transmitters are  
switched off.  
In order to benefit from this feature, the pilot tone function  
must be activated on both the transmitter and the receiver.  
The receiver’s pilot tone function is factory-preset to “ON”  
(= activated).  
Field strength-dependent squelch  
Depending on the strength of the received RF signal, the  
receiver’s audio output is opened or muted. Via the  
SQELCH” menu of the receiver, the squelch threshold can  
be adjusted in three steps (LO, MID, HI).  
29  
 
Specifications  
RF characteristics  
Modulation  
wideband FM  
Frequency ranges  
518–554, 626–662,  
740–776, 786–822,  
830–866 MHz  
Receiving frequencies  
8 channel banks with up  
to 20 factory-preset  
channels each  
1 channel bank with up to  
20 freely selectable  
channels (1440  
frequencies, tunable in  
steps of 25 kHz)  
Switching bandwidth  
Nominal/peak deviation  
Frequency stability  
Receiver principle  
36 MHz  
24 kHz / 48 kHz  
15 ppm  
non diversity  
Sensitivity  
(with HDX, peak deviation)  
<2.5 μV at 52 dBA  
rms S/N  
Adjacent channel rejection  
70 dB  
Intermodulation attenuation 70 dB  
Blocking  
80 dB  
Squelch  
4 steps: OFF  
LO: 5 dBμV  
MID: 15 dBμV  
HI: 25 dBμV  
AF characteristics  
Noise reduction system  
AF frequency response  
Sennheiser HDX  
40–18,000 Hz  
S/N ratio (at 1 mV and peak  
deviation)  
115 dB(A)  
THD (at nominal deviation and 0.9 %  
1 kHz)  
AF output voltage  
3.5 mm jack socket,  
(at peak deviation 1 kHzAF  
)
balanced: +17 dBu  
Overall unit  
Temperature range  
Power supply  
– 10 °C to + 55 °C  
2 AA size batteries, 1.5 V  
approx. 150 mA  
250 μA  
Power consumption  
Power consumption with  
switched-off receiver  
Operating time  
(with batteries)  
812 hours (depending  
on volume)  
Operating time (with  
BA 2015 accupack)  
812 hours (depending  
on volume)  
Dimensions [mm]  
82 x 64 x 24  
Weight (incl. batteries)  
approx. 158 g  
30  
 
Connector assignment  
3.5 mm jack plug,  
unbalanced  
3.5 mm jack plug,  
balanced  
Accessories  
BA 2015  
L 2015  
DC 2  
Accupack  
Charger for BA 2015 accupack  
DC power adapter for external 12V DC  
powering of EK 500 G2 (instead of two  
AA size batteries)  
31  
 
Manufacturer declarations  
Warranty regulations  
The guarantee period for this Sennheiser product is 24 months from the date  
of purchase. Excluded are accessory items, rechargeable or disposable batte-  
ries that are delivered with the product; due to their characteristics these pro-  
ducts have a shorter service life that is principally dependent on the individual  
frequency of use.  
The guarantee period starts from the date of original purchase. For this reason,  
we recommend that the sales receipt be retained as proof of purchase. Wit-  
hout this proof (which is checked by the responsible Sennheiser service part-  
ner) you will not be reimbursed for any repairs that are carried out.  
Depending on our choice, guarantee service comprises, free of charge, the  
removal of material and manufacturing defects through repair or replacement  
of either individual parts or the entire device. Inappropriate usage (e.g. opera-  
ting faults, mechanical damages, incorrect operating voltage), wear and tear,  
force majeure and defects which were known at the time of purchase are exclu-  
ded from guarantee claims. The guarantee is void if the product is manipulated  
by non-authorised persons or repair stations.  
In the case of a claim under the terms of this guarantee, send the device, inclu-  
ding acces-sories and sales receipt, to the responsible service partner. To mini-  
mise the risk of transport damage, we recommend that the original packaging  
is used. Your legal rights against the seller, resulting from the contract of sale,  
are not affected by this guarantee.  
The guarantee can be claimed in all countries outside the U.S. provided that no  
national law limits our terms of guarantee.  
CE Declaration  
of Conformity  
This equipment is in compliance with the essential requirements and other  
relevant provisions of Directives 1999/5/EC or 89/336/EC. The declaration is  
Before putting the device into operation, please observe the respective coun-  
try-specific regulations!  
Batteries or rechargeable batteries  
The supplied batteries or rechargeable batteries can be recycled.  
Please dispose of them as special waste or return them to your spe-  
cialist dealer. In order to protect the environment, only dispose of  
exhausted batteries.  
WEEE Declaration  
Your Sennheiser product was developed and manufactured with  
highquality materials and components which can be recycled and/  
or reused. This symbol indicates that electrical and electronic equip-  
ment must be disposed of separately from normal waste at the end  
of its operational lifetime.  
Please dispose of this product by bringing it to your local collection point or  
recycling centre for such equipment. This will help to protect the environment  
in which we all live.  
32  
 
Sennheiser electronic GmbH & Co. KG  
30900 Wedemark, Germany  
Phone +49 (5130) 600 0  
Fax +49 (5130) 600 300  
www.sennheiser.com  
Printed in Germany  
Publ. 02/06  
090662/A2  
 

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