Figure 21. Waveform W8; Figure 22. Waveform W9 - Motorola ASTRO Digital Saber Service Manual

Tek stopped: 507 Acquisitions
T
T
1
T
2
3
4
T
5.00V Ch2 500mV
Ch1
20.0mV Ch4 500mV
Ch3
W8: Transmit Audio. 1KHz Tone
which provides 3KHz deviation.
Trace 1 - IRQB @ DSP (8KHz)
Trace 2 - MODIN
Trace 3 - EXT MIC @ node C484/R408
Trace 4 - MAI @ node R492/U401
MICAMPOUT
Figure 21 . Waveform W8
1 Acquisitions
Tek stopped:
T
T
1
T
2
Ch1 2.00V Ch2 2.00V
W9: Power Down Reset.
Trace 1 - +5V @ U407 (VDD)
Trace 2 - Reset @ U407 (OUT)
Figure 22 . Waveform W9
Ch1 Freq
7.9872kHz
Low signal
amplitude
M 200us Ch1 1.5 V
MAEPF-24383-A
M1.00ms Ch1 4.52 V
MAEPF-24384-O
11-5