Rohde & Schwarz ZNB - Storing and Packing the Instrument

Maintenance
R&S
®
ZNB/ZNBT
77Getting Started 1316.0062.02 ─ 26
c) If necessary, remove any excess moisture with a dry, soft cloth.
7.2 Storing and Packing the Instrument
The vector network analyzer can be stored at the temperature range quoted in the data
sheet. When it is stored for a longer period of time, the unit must be protected against
dust.
If possible, use the original packing when the instrument is to be transported or dis-
patched; please also observe the notes in Chapter 2.1, "Unpacking and Checking the
Instrument", on page 11.
7.3 Replacing Fuses
The R&S ZNBT is protected by a time lag fuse (T15L250V, stock no. 3589.7478.00).
The fuse is screwed in below the AC power switch on the rear panel.
For the R&S ZNB, each of the optional "Bias Tee" inputs at the rear panel (labeled
PORT BIAS <no>) is protected by a fuse (0.250 A, F IEC60127-2/2, stock no.
0020.7246.00).
Risk of electric shock
The fuse is part of the main power supply. Therefore, handling the fuse while power is
on can lead to electric shock. Before opening the fuse holder, make sure that the
instrument is switched off and disconnected from all power supplies.
Always use fuses supplied by Rohde & Schwarz as spare parts, or fuses of the same
type and rating.
To replace the mains fuse (R&S ZNBT only)
1. Unscrew the fuse holder from the rear panel and pull the fuse holder out of the slot.
2. Pull the fuse out of the fuse holder and replace it by a new one.
3. Stick the fuse holder back into the slot in the rear panel and screw it tight.
To replace the DC input fuses
► Open the fuse holder by slightly turning the lid counterclockwise.
Replacing Fuses