Waveform W2: Dsp Ssi Port Rx Mode; Waveform W3: Dsp Ssi Port Tx Mode Csq - Motorola ASTRO Digital Spectra Service Manual

6-2

Waveform W2: DSP SSI Port RX Mode

Waveform W3: DSP SSI Port TX Mode CSQ

July 1, 2002
2893 Acquisitions
Tek stopped:
T
1
2
T
3
5.00V
Ch2 5.00V
Ch1
Ch3 5.00V
W2: DSP SSI Port RX mode.
Receiving
1KHz tone @ 3KHz deviation, -60dBm.
Trace 1 - RFS
Trace 2 - RXD
1
Trace 3 - SCKR (2.4/0.600MHz)
Note 1: Typically SCKR is a 2.4 MHz clock. In low power
modes, as shown here, SCKR is 600KHz.
Tek stopped: 2836 Acquisitions
1
2
3
Ch1 Ch2 5.00V
5.00V
5.00V
Ch3
W3: DSP SSI Port TX mode CSQ.
Trace 1 - SC2
Trace 2 - STD
Trace 3 - SCK (1.2MHz)
Troubleshooting Waveforms: ASTRO Spectra Waveforms
Ch1 Freq
19.991kHz
Low signal
amplitude
M 20.0us Ch1 2.2 V
MAEPF-24377-O
T
Ch1 Freq
47.856kHz
Low signal
T
amplitude
T
M 5.00us Ch1 2.2 V
MAEPF-24378-O
68P81076C25-C