38
Pre-operational System Configuration and Testing
UltraVoice Indoor Controller (UVIC)
Adjusting the Radio Transceiver
This procedure is previously completed at factory. Only readjust if radio re-alignment is
required or if the radio is being installed in the field.
Qualifications
Requires a properly trained Radio Technician.
Equipment Required
• Radio Service Monitor
• Oscilloscope
• Reflected power meter
Setup
Connect the radio to the service monitor.
Adjusting the receive audio
To adjust the receive audio:
1. Using a service monitor, modulate the correct RF signal into the receiver with a
1 kHz tone:
• If bandwidth is 12.5 kHz (typical), then modulate at 1.5 kHz deviation. If
using private line, add 0.375 kHz private line deviation to the signal.
• If bandwidth is 25 kHz, then modulate at 3 kHz deviation. If using private line,
add 0.75 kHz private line deviation to the signal.
2. Adjust the level at TP16 (UV+ controller card) for 1 V
p-p
using the REC gain
adjustment R105 (controller card front panel. See Figure 4).
Adjusting the transmit deviation
To adjust the transmit deviation:
1. Simultaneously press buttons 5 and 7 on the controller card. This causes the
controller to transmit for approximately 8 seconds.
2. Measure the deviation level using a radio service monitor set to the correct RF.
3. Adjust the TX level (controller card front panel) for the following deviation level on
the radio service monitor.
a. If bandwidth is 12.5 kHz (typical), then adjust for 1.5 kHz deviation. If using
private line, add 0.375 kHz private line deviation to the signal.
b. If bandwidth is 25 kHz, then adjust for 3 kHz deviation. If using private line, add
0.75 kHz private line deviation to the signal.
4. If this step fails to solve issue, then check base station deviation levels as per base
station documentation and manual. Also if used, check the repeater.
NOTE
: Obtain slightly higher S/N levels by increasing the RF modulation levels to
4 and 2 kHz depending on the channel spacing. Do not exceed these deviation levels.
Содержание UltraVoice UVIC
Страница 61: ...61 Operations Description Specifications Installation Operation and Service Manual Figure 17 UVLOC Drawing...
Страница 67: ...67 Appendix B Drawings Figure 18 UVIC Wiring Diagram...
Страница 68: ...68 Figure 19 UVIC IP Wiring Diagram...
Страница 69: ...69 Figure 20 UVIC LL Wiring Diagram...