Table 4-2. Test Environments; Table 4-3. Test Channel Spacing - Motorola EP450 Basic Service Manual

Performance Checks: RF Test Mode
To enter test mode:
1. Turn the radio on.
Within ten seconds after the self test is complete (self test tone is heard), press SB2 (Side Button 2 in
Figure
information in Chapter 8. Entry into the test mode is indicated by a positive indicator tone followed by
a good key chirp (GKC). Upon entering test mode, the radio is in the carrier squelch mode.
2. Press SB1 (Side Button 1) and scroll through and access test environments as shown in
3. Press SB2 and scroll through the channel spacing available as shown in
4. Turn the channel selector knob to change the test channel for that environment as shown in
5. Press the PTT on a test channel to cause the radio to transmit at the test frequency for the channel.
No. of
Beeps
1
GKC*
1
BKC*
2
BKC
3
BKC
5
BKC
9
BKC
* "BKC" means Bad Key Chirp (low-pitched tone), "GKC" means Good Key Chirp (high-pitched
only).
HKLN4215A
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4-2) five times in succession. If the self test complete tone is not heard, see Error Codes
Table 4-2.
Description
Carrier Squelch
Tone Private-Line
Digital Private-Line
Dual-Tone Multiple
Frequency
Unsquelch Open
High-Speed Signal-
ing

Table 4-3. Test Channel Spacing

No. of BKC
ManualsBase.com

Table 4-2. Test Environments

RX: unsquelch if carrier detected
TX: mic audio
RX: unsquelch if carrier and tone (192.8 Hz) detected
TX: mic audio + tone (192.8 Hz)
RX: unsquelch if carrier and digital code (131) detected
TX: mic audio + digital code (131)
RX: unsquelch if carrier detected
TX: selected DTMF tone pair
RX: constant unsquelch
TX: mic audio
RX: unsquelch if carrier detected
TX: 1500 Hz tone
Channel Spacing
1 25 kHz
2 12.5 kHz
3 20 kHz
Table 4-3.
Function
December 3, 2003
4-3
Table 4-4.