Motorola ASTRO XTS 3000 Service Manual page 130

11-4
18 Acquisitions
Tek stopped: Tek stopped:
T
T
1 1
2
1
T
T
3 1
Ch1 Ch2
Ch1 5.00V
Ch3 5.00V
W6: SPI Bus Programming ADSIC.
Trace 1 - ADSIC_SEL*
Trace 2 - SPI_SCK
Trace 3 - MOSI
Note: These waveforms are typical to
any device on the SPI bus.
103 Acquisitions
Tek stopped:
T
T
1
2
T
3
4
T
Ch2
5.00V 200mV
Ch1
2.00V Ch4 2.00V
Ch3
W7: Receive audio: Receiving
1KHz tone @ 3KHz deviation, -60dBm.
Trace 1 - IRQB @ DSP (8KHz)
Trace 2 - SD0 @ C219
Trace 3 - SPKR_COMMON
Trace 4 - INT_SPKR
Note 3: Actual level is dependent upon volume setting.
Waveform W7
T
5.00V
M 50ns Ch1 2.2 V
Waveform W6
M 200us Ch1 2.20 V
3
Ch1 Freq
= Hz
No period
found
T T
MAEPF-24381-O
Ch1 Freq
7.9118kHz
Low signal
amplitude
MAEPF-26009-O