HP 85106D, Manual

Page: 52 / 244

HP 85106D mm-Wave System 2-7
Operation
System Set Up
The initial settings in the Hardware State, Instrument State, and Calibration
Kit definition are listed at the end of this section, and in Chapter , “Appendix
A”. These settings remain active until changed or a new file is loaded from
the system disk to completely change the current instrument state.
NOTE Instrument State 8 is recalled each time the HP 8510 line power is turned
ON. The Machine Dump file loads this register with an appropriate full-band
sweep. Since the hardware state is not modified at power-on, the system can
be configured to power up in a particular frequency range by saving the
desired instrument state into register number 8. Pressing [
USER PRESET
] on
the HP 8510C recalls instrument State 8.
Creating a New
Machine Dump File
You can create a new Machine Dump file to store the exact system
configuration for specific applications. Refer to the steps below:
1. Configure your system for the application. The hardware state, present
instrument state, and all memories are saved exactly as they are
currently defined.
2. Store the Machine Dump to disk by pressing the following keys:
[
DISC
]
{
STORAGE IS INTERNAL
}
[
STORE
]
{
MACHINE DUMP
}
Enter the desired disk file label (RBAND or UWAVE), then press to store the
entire system state
.
Configuring Port 1
and Port 2
The test set module test port is manufactured with precise tolerances so
that the system achieves the stated system specifications. Before each
connection, inspect the test set flange surfaces and the flanges of the device
under test for contamination or damage. In general, imperfections not visible
with the unaided eye do not affect device performance.
During measurement calibration, it is very important that the calibration
standards be connected using a precise, consistent method. The precision
test port flanges and the calibration standards utilize precision guide pin
holes and guide pins. These provide the additional stability necessary to
obtain the best results from the measurement calibration.
The recommended arrangement is illustrated in Figure 2-2 on page 2-8.
There are several important questions about which set up is best. Generally,
adding the 90° bend makes it simpler to connect Port 1 and Port 2 to make
the thru and to connect the device under test.