1164.0644.92 2
E-11
Safety Instructions
This calibration unit has been designed and tested in accordance with the EC Certifi-
cate of Conformity and has left the manufacturer’s plant in a condition fully complying
with safety standards.
General safety considerations
To maintain this condition and to ensure safe operation, you must observe all in-
structions and warnings given on this page.
USB Connection to the Analyzer
•
The calibration unit is intended for direct connection to a network analyzer of the
R&S
®
ZVA/B/T or R&S
®
ZNB/C families following the procedure described on the
following pages and in the analyzer’s help systems. Do not connect the unit to
other USB hosts, e.g. a PC, or insert any USB hubs between the analyzer and the
unit, as this may cause damage to the unit or the host.
•
The length of the connecting USB cable should not exceed 1 m. It is recom-
mended to use the cable delivered with the calibration unit.
•
You can connect several calibration units to the different USB ports of the ana-
lyzer. You can also connect cal units and other devices (mouse, USB memory
stick etc.) simultaneously.
•
An unused calibration unit may remain connected to the USB port while the net-
work analyzer is performing measurements. It must be disconnected during a
firmware update.
•
It is safe to connect or disconnect the calibration unit while the network analyzer is
operating. Never connect or disconnect the unit while data is being transferred be-
tween the analyzer and the unit. Never connect the unit during a firmware update.
ESD Protective Measures
To protect the calibration unit against Electrostatic Discharge (ESD) damage use the
wrist strap and grounding cord supplied with the network analyzer and connect your-
self to the GND connector at the front panel. For details refer to the “Quick Start
Guide” or “Getting Started” guide of your analyzer.
RF Connection
The maximum RF input power of the calibration unit is beyond the RF output power
range of the analyzer, so there is no risk of damage if the device is directly connected
to the test ports. If you use an external power amplifier, make sure that the maximum
RF input power of the calibration unit quoted in the data sheet is never exceeded.
R&S
®
is a registered trademark of Rohde & Schwarz GmbH & Co. KG.
Trade names are trademarks of the owners.