Figure 15. Waveform W2; Figure 16. Waveform W3 - Motorola ASTRO Digital Saber Service Manual

11-2
2893 Acquisitions
Tek stopped:
1
2
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
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.
Figure 15 . Waveform W2
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)
Figure 16 . Waveform W3
T
T
M 20.0us Ch1 2.2 V
MAEPF-24377-A
1
T
T
T
M 5.00us Ch1 2.2 V
MAEPF-24378-A
Ch1 Freq
19.991kHz
Low signal
amplitude
Ch1 Freq
47.856kHz
Low signal
amplitude