Trl 2-Port Calibration - HP 85106D Manual

NOTE

TRL 2-Port Calibration

The TRL 2-Port calibration procedure is recommended for general
measurements of 2-port devices. It is required when performing the
complete performance verification procedure. The procedure consists of
measuring:
•
A zero length thru connection.
•
Short circuits at each port.
•
Terminations at each port for isolation.
•
A waveguide shim as the line standard.
This calibration procedure produces 12 term error correction and provides
the best accuracy for 2-port devices.
1. Set the averaging factor to 128 by pressing in the RESPONSE [
{ } [
AVERAGING ON/restart
Leave the AVERAGING FACTOR as the active function. This allows you to
change the averaging factor for different calibration standards during the
calibration procedure.
If system performance verification is being done, the averaging factor is set
to 1024 by the performance verification program and should not be changed.
2. Start the calibration procedure by pressing:
[ ]
CAL
{ }
CAL KIT 1 WR-xx
{
CALIBRATE:TRL 2-PORT
3. Connect Port 1 directly to Port 2 and press {
measurements.
4. Connect the short to Port 1 and press {
measures S .
11
C
5. onnect the short to Port 2 and press {
measures S .
22
6. Press { }. Isolation calibration is recommended for wide
ISOLATION
dynamic range measurements, but it is not required. To omit the
isolation part of the calibration press {
"Performing the Optional Isolation Calibration" on page 2-20.
] [ ].
128 x1
}
THRU
S11 REFLECT
S11 REFLECT
OMIT ISOLATION
HP 85106D mm-Wave System 2-19
Operation
TRL 2-Port Calibration
]
MENU
}. The system makes 6
}. The system
}. The system
} then proceed with