TRANSCEIVER PERFORMANCE TESTING | |
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3.0RF Test Mode
When the radio is operating in its normal environment, it is not possible to test all individual aspects of the transmitter and receiver performance. Therefore a special “test mode” is used to allow the service technician to perform certain functional tests on the product. A control head fuctional test mode is also available.
To enter test mode (display radios):
1.Turn the radio on.
2.Within ten seconds after the self test is complete, press button P2, five times in succession.
3.Channel number appears in the display. The radio is on channel XX*, carrier squelch mode, 25 kHz channel spacing.
4.Each additional press of P2 scrolls through to the next channel spacing and a corresponding set of tones are sounded.
5.Pressing P1 scrolls through and accesses test environments as shown in Table
6.Pressing P2 for three seconds switches the radio to the control head test mode and zero appears on the display.
7.Pressing P1 causes the radio to display the channel number “1”. Another P1 press causes the radio to display the next channel “2”, and so on until channel “9”.
8.Pressing P1 at the end of the LCD test activates the ‘LED Test’. The next P1 press turns the LEDs and dot On/Off.
9.Pressing P1 at the end of the LED test activates the button test. Pressing any button (except P1) or any keypad button during the LCD test or Icon test immediately activates this test.
10.Pressing P2 for 3 seconds in the control head test mode causes the radio to return to the RF test mode.
*XX = channel number (01 - 06)
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| Table | |
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No. of | Description | Function | |
Beeps | |||
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1 | Carrier Squelch | RX: if carrier detected | |
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| TX: mic audio | |
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1 | Tone | RX: unsquelch if carrier and tone (192.8H z) detected | |
| TX: mic audio + tone (192.8 Hz) | ||
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2 | Digital | RX: unsquelch if carrier and digital code (131) detected | |
| TX: mic audio + digital code (131) | ||
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3 | RX: unsquelch if carrier detected | ||
| multiple | TX: selected DTMF tone pair | |
| frequency |
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9 | MDC1200 | RX: unsquelch if carrier detected | |
| HSS | TX: 1500 Hz tone | |
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5 | Unsquelch | RX: constant unsquelch | |
| Open | TX: mic audio | |
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11 | CMP | RX: if carrier detected | |
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| TX: mic audio | |
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