C.5
GS18
Some applications require knowledge of the pin assignments for the instru-
ment ports.
In this chapter, the pin assignments and sockets for the instrument ports are
explained.
0014294_001
a
b
c
a
SMB-connector for external
UHF antenna, only for models
with UHF radio
b
SMB-connector for external
LTE antenna
c
Port 1 (Power, USB and serial)
1
7
6
8
5
4
3
2
PIN_001
Pin
Signal
Name
Function
Direction
1
USB_D+
USB data line
In or out
2
USB_D-
USB data line
In or out
3
GND
Signal ground
-
4
RxD
RS232, receive data
In
5
TxD
RS232, transmit data
Out
6
ID
Identification pin
In or out
7
PWR
Power input, 10.5 V-28 V
In
8
GPIO
RS232, general-purpose signal
In or out
C.6
GS25
003106_002
b
e
f
h
g
i
j
c d
a
Description
Ports at the instru-
ment underside
Pin assignments for
port P1
Ports at the instru-
ment back panel
1002
Pin Assignments
