
Concepts and Features
R&S
®
ZNC
83
User Manual 1173.9557.02 ─ 13
Advantages of automatic calibration
Automatic calibration is generally faster and more secure than manual calibration,
because:
●
There is no need to connect several standards manually. The number of connections
to be performed quickly increases with the number of ports.
●
Invalid calibrations due to operator errors (e.g. wrong standards or improper con-
nections) are almost excluded.
●
No need to handle calibration kit data.
●
The internal standards don't wear out because they are switched electronically.
Limitations: Some calibration types (TOM, TSM, TRM, TRL, TNA) are not available.
Safety instructions
Please observe the safety instructions in the "Technical Information" provided with the
calibration unit to avoid any damage to the unit and the network analyzer. Safety-related
aspects of the connection and operation of the units are also reported in the following
sections.
3.5.5.1
Connecting the Calibration Unit
The calibration units provide the following connectors:
●
A USB type B connector at the rear is used to power-supply and control the unit. A
USB cable for connection to the network analyzer is provided with the calibration unit.
●
Two or four RF connectors numbered 1 to 4 are to be connected to the test ports 1
to 4 of the analyzer. The connector type is equal for all ports. Depending on the
calibration unit model, it is either type N (f), 3.5 mm (f), 2.92 mm (f) or 2.4 mm (f).
To connect the unit,
1. Switch on and start 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 3.5.5.2, "Performing an Automatic Calibra-
Calibration