Rf Connector - ashtech Z-sensor Operation Manual

Table 2.2 shows the pinout for the optional spread spectrum radio. This connector
mates only with a flex circuit that will be provided if the SSRadio is used. Connector
specifications and flex circuit dimension requirements can be provided if you need to
construct your own flex circuit.
Signal Name
PRTD_IN
CLK20C
GND
GND
1PPSOUT
TXD3
RXD3
+12V_INT
RTS3
CTS3
+5 V
LED_EXT
The 16-pin connector (J101) on the Z-Eurocard is for factory use only.

RF Connector

The RF connector is a standard 50-ohm SMB female wired for connection via coaxial
cabling to a GPS antenna with integral LNA. The SMB connector shell is connected
to the Z-Eurocard common ground. The SMB center pin provides +5Vdc to power the
LNA (maximum 150 mA draw) and accepts 1227 and 1575 MHz RF input from the
antenna; the RF and DC signals share the same path.
For installations compatible with the GG24-Eurocard, an SMB to SMA adapter is
available (p/n 730188).
Equipment
Table 2.1: Z-Eurocard Interface Connector (continued)
Pin Code Pin
* "—" means no connection.
** Required only if SSRadio is installed.
† Required only if LNA requires greater than 5Vdc.
‡Short to ground with a switch closure or open-collector transistor.
Table 2.2: SSRadio Connector Pinout
Number DIR
1 I Should be grounded by the radio to indicate that it is plugged in.
2 O 20 MHz square wave output
3 P Ground/Power return
4 P Ground/Power return
5 O GPS 1 Pulse Per Second
6 O Transmit data port D (RS232 level)
7 I Receive data port D (RS232 level)
8 P 12 V radio power from 64-pin connector
9 O Request-to-send port D (RS232 level)
10 I Clear-to-send port D (RS232 level)
11 P Not connected on Z-Eurocard
12 I Not connected on Z-Eurocard
Code
Description
13