ashtech Z-eurocard, Operation Manual

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Equipment 13
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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.
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 pr5Vdc 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).
* “—” 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
Signal Name Number DIR Description
PRTD_IN 1 I Should be grounded by the radio to indicate that it is plugged in.
CLK20C 2 O 20 MHz square wave output
GND 3 P Ground/Power return
GND 4 P Ground/Power return
1PPSOUT 5 O GPS 1 Pulse Per Second
TXD3 6 O Transmit data port D (RS232 level)
RXD3 7 I Receive data port D (RS232 level)
+12V_INT 8 P 12 V radio power from 64-pin connector
RTS3 9 O Request-to-send port D (RS232 level)
CTS3 10 I Clear-to-send port D (RS232 level)
+5 V 11 P Not connected on Z-Eurocard
LED_EXT 12 I Not connected on Z-Eurocard
Table 2.1: Z-Eurocard Interface Connector (continued)
Pin Code Pin Code