TeeJet RX 400p - Manual (Page 25)

RX 400p
1-5 98-05044
R1
on the rear panel, labeled ‘MAIN’ and ‘AUX’ to transmit and receive data (refer to
Appendix B Interface Information).
MAIN is the primary interface port for differentially corrected GPS data. The AUX
port is a secondary port designed for input of external RTCM correction data. In the
case that an external differential source is required, you may configure the RX 400p
using the menu system to accept the external correction data through the AUX port.
Both data ports are located at the back panel of the RX 400p and are a DB9 socket
connector. Table 1-2 and Table 1-3 provide pin-assignment information for the RX
400p MAIN and AUX serial ports respectively.
Table 1-2 MAIN Pin-out, RS-232C Interface Level
Pin # Signal Description
2 TXD RX 400p NMEA 0183 and binary output
3 RXD RX 400p NMEA 0183 and binary input
5 Sig. Ground Signal return
9 1 PPS 1 Pulse per second timing output (HCMOS, rising edge
synch, 10 k
Ω, 10 pF load)
Table 1-3 AUX Port Pin-out, RS-232C Interface Level
Pin # Signal Description
3 RXD RTCM Input (Extrnl RTCM mode only)
5 Sig. Ground Signal Return
6 Event Marker HCMOS, active low, falling edge sync, 10 k Ω, 10 pF load
9 1 PPS 1 Pulse per second timing output (HCMOS, rising edge synch, 10 k Ω, 10 pF
load)
Figure 1-2 displays the numbering scheme for a DB9 socket connector (female), as
located on the rear panel of the RX 400p receiver. The associated numbering for the
plug connector (male) is a mirror reflection of scheme showed in this figure.