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19541P-43 (09-12)

 

6 of 9

 

 

 

Radio Transmit Level Adjustment Procedure 

 

Note:

  A radio service monitor is recommended for this adjustment. 

 
1.

 

Connect at least one belt station to the U9922-G38 gateway and ensure sidetone is 
present (see belt station User Manual). 

2.

 

Open the cover of the U9922-G38 and find the large silver knob. 

3.

 

Press and hold the PTT and speak clearly and loudly into the microphone. 

4.

 

Slowly turn the knob until the radio service monitor reads 4.0-4.5kHz deviation. 

a.

 

Clockwise to increase level; counter-clockwise to decrease 

 

Radio Receive Level Adjustment Procedure 

1.

 

Connect at least one belt station to the U9922-G38 gateway and ensure side-tone is 
present (see belt station User Manual). 

2.

 

Open the cover of the U9922-G38 and find the large silver knob. 

3.

 

Tune the radio to a continuous transmission (such as NWS) or transmit a test signal 
from another radio. 

4.

 

Adjust the volume control on the radio to a level slightly higher than typical. 

5.

 

Slowly turn the knob until you hear a loud and clear signal on the wireless intercom.   

a.

 

Clockwise to increase level; counter-clockwise to decrease 

 

 

Range 

The range of a belt station and a gateway can be up to 300ft (100m).  If you are in an environment 
with metal or concrete walls, this range could be reduced.  If the belt station enters into a "fringe" 
reception area, a brief sequence of three beeps will be heard in the headset.  This is to serve as a 
warning of a possible disconnection if conditions are not improved.  When possible, the user 
should attempt to regain line-of-sight contact with the controller.  When the belt station travels 
out of range of the gateway, a voice alert will indicate that the connection has been lost.  To 
reconnect, simply move back into range and connection with the gateway will automatically be 
reestablished, also noted by a voice alert.  
 

 

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In some circumstances it may be desired to “purge” the U9922-G38 of some of its linked belt 
stations.  Typically purging is not necessary unless there are multiple gateways in the same 
vicinity and you wish to remove a belt station from this gateway and link to a different gateway.  
A gateway can link up to six belt stations where a belt station can be linked to only one gateway 
at a time.   

Summary of Contents for U9922-G38

Page 1: ...19541P 43 09 12 2012 DAVID CLARK COMPANY INCORPORATED USER MANUAL 3800 Gateway U9922 G38 P N 40995G 01...

Page 2: ......

Page 3: ...damage If damage is apparent immediately file a claim with the carrier and notify your David Clark product supplier ELECTRICAL HAZARD Disconnect electrical power when making any internal adjustments...

Page 4: ...22 G38 provides communication for up to four users as well as an interface to an existing David Clark Model 3800 wired intercom system Additionally the U9922 G38 can be used as a stand alone wireless...

Page 5: ...along with a C99 22MS interface cable for each U9922 G38 gateway to be used and one C98 20PW power cable In this configuration if a two way radio is used it must be connected to the radio input on eac...

Page 6: ...ion 5 Upon successfully establishing connection the LED on the gateway will flash a green pattern corresponding to the number of belt stations connected Tip Once linked the devices will not need to be...

Page 7: ...om Level Adjustment Audio levels can vary between intercoms mainly due to the system level setting on the wired intercom To compensate for this the U9922 G38 has the ability to adjust its receive leve...

Page 8: ...on the wireless intercom a Clockwise to increase level counter clockwise to decrease Range The range of a belt station and a gateway can be up to 300ft 100m If you are in an environment with metal or...

Page 9: ...mber of belt stations to be kept linked 4 Press and hold LINK button on the gateway for 30 seconds until LED quickly flashes red 5 Release LINK button T Tr ro ou ub bl le es sh ho oo ot ti in ng g Tab...

Page 10: ...ut 4 mW 100mW peak U S and Canada Range 300 ft 100m line of sight nominal Operating Temperature 14 F to 131 F 10 C to 55 C Storage Temperature 4 F to 140 F 20 C to 60 C Power Requirements 8 to 32 VDC...

Page 11: ...ard s Operation is subject to the following two conditions 1 this device may not cause interference and 2 this device must accept any interference including interference that may cause undesired opera...

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