B-14 APPENDIX B TPU Software Interface and Control
Series 3000 Sonar System Operations and Maintenance Manual 11210066, Rev. 11
d = 3: Generate a sawtooth waveform by holding the low
12 bits at 0xFFF, and incrementing a 12-bit
counter every sample time to drive the high
12 bits.
d = 4: Reserved.
d = 5: Send the static data pattern 1-2-3-A-B-E for every
24-bit sample.
d = 6: Redirect selected TX waveform to uplink.
Decimate the sample rate as required (8:1) and
assign to MS 8 bits of each 24-bit sample. (Low
16 bits 0x0000).
B.6.4 Datalogger On/Off commands
The 4 acceptable commands will be:
$PKLA,PC1: Will turn power off to the sonar only.
$PKLA,PC2: Will turn power off to the TPU only.
$PKLA,PC3: Will turn power on to both the TPU and sonar.
$PKLA,PC0: Will turn power off to both the TPU and sonar.
$PKLA,PL2: Will shut down data logger in the proper Linux sequence.
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