Rear Panel Connectors R&S
®
ZVA/ZVB/ZVT
1145.1084.12 8.8 E-3
Pin No. Name Input (I) or
Output (O)
Function
17 DRIVE PORT 2 O Test port 2 is source port (drive port)
18 DRIVE PORT 3 O Test port 3 is source port (drive port)
19 DRIVE PORT 4 O Test port 4 is source port (drive port)
20 GNDD - Digital ground
21 EXT GEN TRG O Control signal for external generator
22 EXT GEN BLANK I Handshake signal from external generator
23 GNDD - Digital ground
24 FOOT SWITCH 1 I Control input A
25 FOOT SWITCH 1 I Control input B
*) Note: Feeding in the external trigger signal via the BNC connector EXT TRIGGER is equivalent.
Both input connectors must not be used simultaneously, because this can cause malfunctions of
the analyzer.
Caution!
Use only well shielded cables or disconnect the input pins of the
USER CONTROL connector in order to avoid spurious input signals
which may cause undesirable events.
This is of particular importance for the external trigger input (pin no.
2) if the EXT TRIGGER input is used.
EXT TRIGGER
Coaxial BNC connector used as an input for a low-voltage (3.3 V) TTL external trigger signal.
*) Note: Feeding in the external trigger signal at pin 2 of the D-Sub connector USER CONTROL is
equivalent. Both input connectors must not be used simultaneously, because this can cause
malfunctions of the analyzer.
Pin No. Name Input (I) or
Output (O) or
Bidirectional (B)
Voltage Range Function
Center conductor RP_EXT_TRG I 3.3 V TTL External trigger signal
Outer conductor GNDA – 0 V Analog ground
GPIB Bus Interface
The standard instrument is equipped with a GPIB bus (IEC/IEEE bus) connection. The two interface
connectors labeled IEC BUS and IEC SYSTEM BUS are located on the rear panel of the instrument.
• The IEC BUS connector is intended for remote control of the analyzer from a controller.
• The IEC SYSTEM BUS can be used to control further devices from the analyzer.
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