Motorola ASTRO Digital Spectra Plus - ASTRO Digital Spectra Waveforms; Waveform W1: Power-On Reset Timing; Waveform W2: DSP SSI Port RX Mode

September 5, 2008 6881076C25-E
6-2 Troubleshooting Waveforms: ASTRO Digital Spectra Waveforms
6.2 ASTRO Digital Spectra Waveforms
Waveform W1: Power-On Reset Timing
Waveform W2: DSP SSI Port RX Mode
SWB+
POR
t
217mS
o
MAEPF-25187-O
2893 Acquisitions
Tek stopped:
T
2
Ch3
Ch1
T
1
3
M 20.0us Ch1 2.2 V
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)
Ch1 Freq
19.991kHz
Low signal
amplitude
5.00V
5.00V
1
5.00V
Ch2
MAEPF-24377-O
Note 1: Typically SCKR is a 2.4 MHz clock. In low power
modes, as shown here, SCKR is 600KHz.