Specifications

BATS AND PORTABLE BATS INSTALLATION
2-38
2.3.6 PORTABLE BATS - COM#3 PITCH/ROLL NMEA INPUT
(Cable Wiring; 9-PIN `D' CONNECTOR, Figure 2-20, 4450CA0044)
The Transceiver (Model 4461A) COM #3 I/O port is wired the same as a PC ("DTE", Data Terminal
Equipment). It is used for the input of NMEA Pitch and Roll sensors. See Figures below for wiring.
If an EdgeTech MRU is interfaced to COM#3 the wiring has been crossed-over in the MRU so that a
null modem is not required.
If the PORTABLE BATS is configured with the Micro-Modem option, COM #3 is used for the Modem
Communications only and COM#3 is no longer available to the BATS.