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Maintenance
R&S
®
ZN-Z3x
47
User Manual 1177.6381.02 ─ 03
5
Maintenance
5.1
Inline Calibration Unit Recharacterization
The Inline Calibration Units R&S
ZN-Z32/Z33 need to be recharacterized in inter-
vals of one year. Other maintenance work is essentially limited to cleaning the
Inline Calibration System components and replacing fuses in the Inline Calibration
Controller.
Irregular recharacterization may cause deviations from specified data
The technical information provided in the data sheet can be only guaran-
teed if the Inline Calibration Units R&S
ZN-Z32/Z33 are recharacterized in
regular intervals. The recharacterization interval should not exceed one
year.
5.2
Replacing Fuses
The Inline Calibration Controller R&S
ZN-Z30 is protected by two fuses
(IEC60127 T3.15H / 250 V, stock no. 0099.6729.00), located in the fuse drawer
below the AC power switch on the rear panel.
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.
Replacing Fuses