Setup and operation with R&S
ZVA/ZVT
R&S
®
ZCxxx
38
Getting Started 1177.5156.02 ─ 05
Annex
A
Setup and operation with R&S
ZVA/ZVT
A.1
Connecting the RF cables
The connectors RF IN, LO IN, MEAS OUT and REF OUT have to be connected
to the VNA; LO IN can alternatively be connected to an external generator.
Switch off the converter power supply R&S
ZCPS before connecting the RF
cables.
Risk of connector and cable damage
Tightening the cables too strongly may damage cables and connectors.
Loose tightening may result in inaccurate measurement results.
Therefore always use an appropriate torque wrench, suitable for the type of
connector. Rohde & Schwarz offers an optional 5/16” torque wrench that fits
for SMA, 3.5 mm, 2.92 mm and 1.85 mm connectors (order number
1328.8534.35). Similar wrenches are available for other sizes of spanner,
too. See ordering information in R&S
ZCxxx data sheet or product bro-
chure.
A.1.1
Input powers RF IN and LO IN
The RF input power at the connectors RF IN and LO IN must not exceed the
maximum values quoted in the data sheet. These maximum values are below the
maximum RF source power of the network analyzer. The frequency converter
modes for the R&S
ZCxxx models that are provided by the R&S
ZVA/ZVT firm-
ware V3.40 and higher, ensure compatible source powers. Therefore, activate
this mode before you connect your frequency converter's RF IN and LO IN to the
VNA.
Connecting the RF cables
