Waveform W4: Abacus Programming At Mode Change; Waveform W5: Abacus/Adsic Interface - Motorola ASTRO Digital Spectra Service Manual

Troubleshooting Waveforms: ASTRO Spectra Waveforms

Waveform W4: ABACUS Programming at Mode Change

Waveform W5: ABACUS/ADSIC Interface

Tek stopped:
1
2
3
68P81076C25-C
13 Acquisitions
Tek stopped:
T
T
1
Ch1 2.00V
W4: ABACUS programming
captured during mode change.
Trace 1 - (ADSIC) SBI
34513 Acquisitions
T
T
Ch1 2.00V Ch2 500mV
500mV
Ch3
W5: ABACUS/ADSIC Interface.
Receiving 1KHz tone @ 3KHz deviation,
-60dbm.
Trace 1 -IDC (2.4MHz)
Trace 2 - DOUT
TRACE 3 - DOUT*
Note 2: Since these signals are a differential
current loop these voltages are very low.
M 10.0us Ch1 2.2 V
MAEPF-24379-O
Ch1 Freq
2.251920 MHz
Low resolution
M 5.00us Ch1 2.2 V
MAEPF-24380-O
2
Ch1 Freq
74.610kHz
July 1, 2002
6-3