INTERFACE SPECIFICATIONS
SeaBat 8160
Operator‟s Manual
Page 91
October 6, 2011
Version 5
C.4.3.1
Uplink NRZI Modulation
The Non-Return-to-Zero Invert-Ones (NRZI) modulator toggles when the 4-to-5
bit is “1”. This action attenuates the low-frequency component of the 4-to-5
signal, making it suitable for passage through AC-coupled uplink circuitry.
CAUTION
The maximum cable length between the transceiver unit and the sonar
processor is 20m. Care should be taken to ensure that all cable and
connectors in the uplink path are correctly terminated and shielded.
It is particularly important that a 75 ohm impedance be maintained throughout.
If impedance is mismatched, it will cause signal degradation regardless of the
cable length.
C.4.4 Downlink Data
The downlink from the sonar processor to the transceiver unit commands the
transceiver circuits into various states and modes. Nominal amplitude is
12V
and packets are transmitted at irregular intervals. The downlink receiver is opto-
isolated for protection. Some data delay is tolerated by the transceiver.
Table 28: Downlink Technical Specifications
Description
Setting
Signal Type
RS232
Baud Rate IN
N/A
Baud Rate OUT
19200
Data Bits
8
Parity
None
Stop Bits
1
Содержание SeaBat 8160
Страница 103: ...SYSTEM DRAWINGS SeaBat 8160 Operator s Manual Page 93 October 6 2011 Version 5 Figure 31 SeaBat 8160 System Sheet 1...
Страница 104: ...SYSTEM DRAWINGS SeaBat 8160 Operator s Manual Page 94 October 6 2011 Version 5 Figure 32 SeaBat 8160 System Sheet 2...
Страница 105: ...SYSTEM DRAWINGS SeaBat 8160 Operator s Manual Page 95 October 6 2011 Version 5 Figure 33 Array Installation Template...
Страница 107: ...SYSTEM DRAWINGS SeaBat 8160 Operator s Manual Page 97 October 6 2011 Version 5 Figure 35 Array Section 1...
Страница 108: ...SYSTEM DRAWINGS SeaBat 8160 Operator s Manual Page 98 October 6 2011 Version 5 Figure 36 Array Section 2...
Страница 109: ...SYSTEM DRAWINGS SeaBat 8160 Operator s Manual Page 99 October 6 2011 Version 5 Figure 37 Array Section 3...
Страница 110: ...SYSTEM DRAWINGS SeaBat 8160 Operator s Manual Page 100 October 6 2011 Version 5 Figure 38 Four Inch Flange...
Страница 111: ...SYSTEM DRAWINGS SeaBat 8160 Operator s Manual Page 101 October 6 2011 Version 5 Figure 39 Projector...
Страница 112: ...SYSTEM DRAWINGS SeaBat 8160 Operator s Manual Page 102 October 6 2011 Version 5 Figure 40 Hydrophone...
Страница 114: ...SYSTEM DRAWINGS SeaBat 8160 Operator s Manual Page 104 October 6 2011 Version 5 Figure 42 Cable Projector Dry End...