Khz Frame Sync Waveform; Rx Audio Waveforms - Motorola ASTRO XTL 1500 Detailed Service Manual

Troubleshooting Waveforms: XTL 1500 Waveforms

6.2.19 8 kHz Frame Sync Waveform

Ch1

6.2.20 RX Audio Waveforms

1
2
3
4
6815854H01-A
1.00V
Receiving
1 kHz tone at 3 kHz Dev, -47dBm Secure Mode
Trace 1 — J0501 — 4
T
T
T
Ch2, Ch3, Ch4: See 1K sinewave chart
Receiving
1 kHz tone @ 3 kHz deviation, -60 dBm. Volume set to rated audio.
Trace 1 — SAP_DCLK (8 kHz)
Trace 2 — TP0205
Trace 3 — SPKR_LOW out of U0204
Trace 4 — SPKR_HI out of U0204
Note 3: Actual level is dependent upon volume setting.
M 100us Ch1 1.20V
MAEPF-27866-O
MAEPF-27867-O
C1 High
2.85V
C1 Period
124us
Ch1 Freq
~ ~
8 kHz
1K sinewave
June 16, 2005
6-11