Preparing the Analyzer for Use
R&S
®
ZVA
20
Getting Started 1145.1090.62 ─ 13
1.3.4 Operation in a 19" Rack
Using the adapter R&S ZZA-611 (order number 1096.3302.00) the instrument can be
mounted in 19" racks according to the mounting instructions supplied with the rack
adapter.
Avoid overheating
●
Allow for sufficient air supply in the rack.
●
Make sure that there is sufficient space between the ventilation holes and the rack
casing.
1.3.5 EMI Suppression
To suppress generated Electromagnetic Interference (EMI), operate the instrument
only while it is closed, with all shielding covers fitted. Note the EMC classification in the
data sheet.
Use appropriate shielded cables to ensure successful control of electromagnetic radia-
tion during operation, especially for the following connector types:
●
BNC rear panel connectors (10 MHz REF, EXT. TRIGGER): Use double shielded
cables and terminate open cable ends with 50 Ω.
●
USER CONTROL: Use only well shielded cables or disconnect the input pins of the
USER CONTROL connector in order to avoid spurious input signals which may
cause 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 com-
ply 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
connector, cable, and cable length requirements. Refer to the relevant documentation.
Putting the Analyzer into Operation
