Annexes
R&S
®
ZNC
737
User Manual 1173.9557.02 ─ 13
9 Annexes
The following sections cover mostly hardware and service-related topics.
9.1 Interfaces and Connectors
This chapter provides a detailed description of the rear panel connectors of the R&S ZNC.
For an overview of the rear panel connectors refer to section "Rear Panel Tour" in the
Help or in the Getting Started guide. The front panel is described in section "Front Panel
Tour".
9.1.1 Rear Panel Connectors
The rear panel of the R&S ZNC provides various connectors for external devices and
control signals.
9.1.1.1
USER PORT
25-pole D-Sub connector used as an input and output for low-voltage (3.3 V) TTL control
signals. Some of the USER PORT lines can be controlled via GPIB bus (see
).
Pin No.
Name
Input (I) or
Output (O)
Function
1
GNDD
-
Digital ground
2
EXT TRG
I
External trigger signal, 5 V tolerant *)
3
GNDD
-
Digital ground
4
BUSY
O
Measurement running
5
GNDD
-
Digital ground
6
READY FOR TRIG-
GER
O
Measurement terminated, ready for trigger (not available for
pulsed measurements)
7
GNDD
-
Digital ground
8
CHANNEL BIT 0
O
Channel-specific bit 0;
see
9
CHANNEL BIT 1
O
Channel-specific bit 1
10
CHANNEL BIT 2
O
Channel-specific bit 2
Interfaces and Connectors
