GAI-Tronics 4512-001 6-Channel Radio User and Installation Manual - Manual (Page 16)

Pub. 42004-387G
Model 4512-001, 4512-001FR, 4514-001, and 4514-001FR 6-Channel Radios Page 14 of 19
f:\standard ioms - current release\42004 instr. manuals\42004-387g.doc
02/15
Programming
The Radio Transceiver Module contains programmable features, such as CTCSS and frequency selection,
which can be set at the factory to the customer’s specifications.
Any changes should be made by a qualified technician. The software programming kit (Part No. 19101-
024) is required.
Power Supply Adjustment
The power supply PCBA is factory-adjusted for a float voltage of 13.8 V dc at 11.5 mA charging current
into the optional standby/emergency battery. The charging current can be adjusted using Pot 2 on the
Power Supply PCBA. Refer to Figure 4 on page 7 for location of Pot 2. If field adjustment becomes
necessary, the procedure is as follows:
1. Disconnect the battery terminals and substitute a 1200-ohm, 5% resistor connected across the
‘fast-on’ terminals that are disconnected from the battery.
2. Measure across the resistor, and adjust the float level using Pot 2 to 13.8 +0.1 V dc.
3. Disconnect the load resistor and re-connect the leads of the battery.
Speaker Output Adjustment
The speaker output volume is adjustable using R7 on the Interface PCBA. Refer to Figure 4 on page 7 for
the location of R7. The adjustment procedure is as follows:
1. With the speaker in place, initiate a radio conversation with a second radio user.
2. Adjust R7 for the desired maximum speaker volume.