GAI-Tronics CB193-001 Call Boxes - Manual (Page 53)

Pub.: 43004-031E
Model CB193-xxx, CB194-xxx, and CB195-xxx RF Call Boxes Page 52 of 52
f:\radio products-current release\43004\43004-031e\43004-031e.doc
11/12
Operational Check
During this check, another radio programmed to the same frequency must be available. Power must be
applied to the RF Call Box assembly during this test, either an internal battery or external power supply.
Verify the status lamp functions correctly:
1. Momentarily press the push-to-talk (PTT) switch (push button or handset pressbar).
• The lamp illuminates red and changes to green after splash tone is heard over the speaker or in
the handset earpiece.
• The lamp remains green for the initial transmission time-out period
• The lamp extinguishes at the end of the transmission.
2. A received audio transmission causes the lamp to illuminate red for the duration of the reception.
Verify that transmit audio is received:
1. Press and hold the PTT switch.
• The status lamp momentarily illuminates red and a splash tone is heard in handset receiver or
over the speaker.
• The status lamp changes to green and remains that color until the PTT switch is released.
2. Speak in a normal tone of voice or into the handset microphone when the status lamp is green. The
transmitted audio should be heard at the radio programmed to the same frequency. Adjust the
transmitted audio level as required by adjusting R60, MIC VOL pot.
Verify received audio is heard:
1. Release the PTT button and the status lamp extinguishes.
2. Transmit audio from the radio and verify the audio is heard over the speaker or handset receiver.
Adjust the received audio level as required by adjusting R30, SPKR VOL pot.
Maintenance
Check external power supply/solar panel or replace battery when a low battery condition is present
(notification of ANI DTMF code or blinking amber status lamp).