Motorola CP150 Basic Service Manual page 31

RF Test Mode
To enter test mode:
1. Turn the radio on.
2. Within ten seconds after the self test is complete (self test tone is heard), press SB2 (Side Button
2 in Figure 3-2) five times in succession. If the self test complete tone is not heard, see Error
Codes information in Section 5. Entry into the test mode is indicated by a positive indicator tone
followed by a good key chirp (GKC).
3. Upon entering test mode, the radio is on carrier squelch mode.
4. Press SB1 (Side Button 1) and scroll through and access test environments as shown in Table 3-
2.
5. Press SB2 and scroll through the channel spacing available as shown in Table 3-3.
6. Turn the channel selector knob to change the test channel for that environment as shown in Table
3-4.
7. Press the PTT on a test channel to cause the radio to transmit at the test frequency for the chan-
nel.
No. of
Beeps
1
GKC*
1
BKC*
2
BKC
3
BKC
5
BKC
9
BKC
11
BKC
* "BKC" means Bad Key Chirp (low-pitched tone), "GKC" means Good Key Chirp (high-
pitched tone).
Table 3-2 Test Environments
Description
Carrier Squelch RX: unsquelch if carrier detected
TX: mic audio
Tone RX: unsquelch if carrier and tone (192.8Hz) detected
Private-Line TX: mic audio + tone (192.8Hz)
Digital RX: unsquelch if carrier and digital code (131) detected
Private-Line TX: mic audio + digital code (131)
Dual-Tone Mul- RX: unsquelch if carrier detected
tiple Frequency TX: selected DTMF tone pair. (Available for 4W & 5W
models only).
Unsquelch RX: constant unsquelch
Open TX: mic audio
High-Speed RX: unsquelch if carrrier detected
Signaling TX: 1500Hz tone
Companding RX: unsquelch if carrier detected
TX: mic audio
Table 3-3 Test Channel Spacing
No. of BKC
1
2
3
Function
Channel Spacing
25 kHz
12.5 kHz
20 kHz
3-3