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Preparing the Analyzer for Use
R&S
®
ZVA
20
Quick Start Guide 1145.1090.62 ─ 10
undesirable events. This is of particular importance for the external trigger input (pin
no. 2) if the EXT TRIGGER input is used.
●
USB: Use double-shielded USB cables and ensure that external USB devices comply
with EMC regulations.
●
GPIB (IEEE/IEC 625): Use a shielded GPIB cable.
●
LAN: Use CAT6 or CAT7 cables.
●
Test ports: For instruments with 3.5 mm and smaller connector types (2.92 mm, 2.4
mm ...), use double-shielded measurement cables.
The use of external accessories for the network analyzers may introduce additional con-
nector, cable, and cable length requirements. Refer to the relevant documentation.
1.3.6 Connecting the Analyzer to the AC Supply
The network analyzer is automatically adapted to the AC supply voltage supplied. The
supply voltage must be in the range 100 V to 240 V; 50 Hz to 60 Hz. The mains connector
is located at the bottom left corner of the rear panel.
► Connect the network analyzer to the AC power source using the AC power cable
delivered with the instrument.
The maximum power consumption of the analyzer is 450 W. The typical power con-
sumption is listed in the "Specifications".
The network analyzer is protected by two fuses as specified on the label on the power
supply. The fuses are located on an AC Fuse Board (order no. 1145.3906.02) which must
be replaced to change the fuses. Replacing the AC Fuse Board requires opening the
instrument and is described in the service manual.
1.3.7 Power on and off
The mains connector is located at the bottom left corner of the rear panel.
► To turn the power on or off, press the AC power switch to position I (On) or 0 (Off).
After power-on, the analyzer is in standby or ready state, (see
, on page 21) depending on the state of the STANDBY toggle switch
at the front panel when the instrument was switched off for the last time.
The AC power switch can be permanently on. Switching off is required only if the instru-
ment must be completely removed from the AC power supply.
Putting the Analyzer into Operation