Specifications

ZVx Interfaces
1043.0009.50 A.23 E-8
A.6 Probe Connectors (PROBE 1, PROBE 2)
To allow the connection of probes, the ZVx has the supply voltage connectors PROBE 1 and PROBE 2.
They deliver the power supply voltages +15 V, -12 V and ground.
The connectors are also suited for powering the high-impedance probes from Hewlett Packard.
A.7 Reference Input (REF IN)
A high-precision external reference oscillator, used to increase the frequency accuracy and to improve
the stability of the internal reference, can be connected here. The internal reference oscillator
synchronizes to the frequency of the external oscillator when the frequency is n
.
1 MHz, with n being an
integer between 1 and 15. The permissable frequency error of the external reference oscillator is 6 ppm.
It must be able to supply between 0.1 V und 3 V at 1 kΩ. Switching between internal and external
reference is accomplished in the SETUP menu.
A.8 Reference Output (REF OUT)
When the ZVx is operated with its internal reference, the 10-MHz reference signal is available at the
REF OUT connector and thus provides the capability of, e.g., synchronisation of external instruments to
the ZVx. The signal is a sinewave with a level of
12 dBm ± 3 dB when connected to 50 Ω.
A.9 External Trigger Input (EXT TRIGGER)
The EXT TRIGGER connector is used for controlling the measurement via an external TTL signal. The
edge of the signal is used for triggering, whereby either the positive or negative edge can be selected.
The pulse width of the external trigger signal must be at least 1
µs.
A.10 External Level Control Input (LEVEL)
Frequency range: 0 to 100 kHz
Voltage range: 0 to 10 V
Input impedance: > 10 kΩ
A.11 DC Voltage Input for PORT 1 and PORT 2 (PORT BIAS 1 / 2)
Optional rear panel interfaces (only by active test sets). < 200 mA or < 30 V