Preparing the Analyzer for Use
R&S
®
ZVA80
21
Quick Start Guide 1312.6808.62 ─ 02
2.5.7 Switching on the External Test Set
The standby toggle switch is located at the rear panel (see
, on page 13). To switch the external test set to ready state, press the key. The
green LED next to the switch must be lit now.
After switching the external test set to the ready state a warm-up time of one hour is
required to ensure accurate measurements. The instrument is only warmed-up in ready
state, not in standby state.
2.5.8 Mounting a DUT
The DUT must be screwed to the 1 mm test port connector at the front of the diplexer. A
tight connection is very important to ensure precise calibration and measurement results.
Depending on the connectors of the DUT, additional adapters may be required.
For two-port measurements involving two external test sets connected to one DUT, the
test sets and the DUT must be aligned accurately, using the adjustable feet of the test
sets.
2.5.9 Replacing Fuses
The frequency converter and the diplexer are each protected by a fuse of type IEC60127
T1 L/H. To replace a fuse open the fuse holder by slightly turning the lid counter-clock-
wise, preferably using a small coin. A replacement fuse is provided with the instrument.
2.6 Maintenance
The external test sets do not require any special maintenance. Make sure that the air
vents of the frequency converters are not obstructed. The outside is suitably cleaned
using a soft, line-free dust cloth.
Risk of damage
Cleaning agents contain substances that may damage the external test set, e.g. the front
panel labeling or plastic parts.
Never use cleaning agents such as solvents (thinners, acetone etc.), acids, bases or
other substances.
For our support center address and a list of useful R&S contact addresses refer to the
pages at the beginning of this guide.
Maintenance
