Installation manual

Page 33
Rear Panel Connections
• The auxiliary alarm contact is capable of switching up to 24 V DC at up to 1 A
(inductive load). The contacts are not connected to any internal voltages.
• The power supply input is isolated from the case and antenna. It must remain
within the range 10.8 – 31.2 V DC (12/24 V DC nominal) at all times.
Connecting a Printer
The recommended external printer option is the Seiko DPU-414; the default printer
parameters are set correctly for this model. The printer should be connected to the
NMEA port of the NAV-7 (the 9-way D-type socket at the rear):
DPU-414 pin 3 (RxD) to NAV-7 pin 7 (TxA)
DPU-414 pin 5 (Gnd) to NAV-7 pin 2 (TxB)
TNC RF connector
1
/
8
” Spade terminal – ground pin
9-way D-type – NMEA 0183 & printer port
USB connector –
not currently used
15-way D-type – power and IBS port and alarm relay