Concepts and features
R&S
®
ZNA
208User Manual 1178.6462.02 ─ 29
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RF connectors, which are connected to the test ports. For all Rohde & Schwarz
calibration units except a customized R&S ZN-Z51, the connector types are equal
for all ports.
To connect the unit,
1. Switch on and power up your network analyzer.
2. To protect your equipment against ESD damage, use the wrist strap and grounding
cord supplied with the instrument and connect yourself to the GND connector at
the front panel.
3. Connect the USB type A connector of the USB cable to any of the USB type A con-
nectors of the analyzer. Connect the USB type B connector of the USB cable to the
USB type B connector of the calibration unit.
4. Wait until the operating system has recognized and initialized the new hardware.
When the unit is connected for the first time, this may take longer than in normal
use.
The unit is ready to be used, see Chapter 4.5.5.2, "Performing an automatic calibra-
tion", on page 208.
Recommended use
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The calibration unit is intended for direct connection to R&S ZNA network ana-
lyzers following the procedure described above. You can also connect the unit
before switching on the analyzer. 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 dam-
agethe unit or the host.
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You can connect several calibration units to the different USB ports of the analyzer.
You can also connect cal units and other devices (mouse, USB memory stick etc.)
simultaneously.
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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 firm-
ware update.
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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
between the analyzer and the unit. Never connect the unit during a firmware
update.
4.5.5.2 Performing an automatic calibration
After connection and initialization of the calibration unit, define an automatic calibration
in the calibration setup dialog; see Chapter 5.11.1.4, "Calibration setup dialog",
on page 582), Then perform the automatic calibration of the related test ports using the
calibration wizard; see Chapter 5.11.1.3, "Calibration wizard", on page 573. The wizard
indicates the required port (re-)connections.
Calibration
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