HP 8920A, Руководство пользователя

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S:\HP892XX\USRGUIDE\manual\confscrn.fb
Chapter 7, Configure Screen
Field Descriptions
Date
This field specifies the current date for the internal clock. The date can be read by
a controller using HP-IB and printed on test results.
The format is MMDDYY (Month Day Year), using two digits for each term.
When entering months January through September (01-09), the leading zero is not
displayed when entered. Example; May 5, 1993 is entered as 050593, but is
displayed as 50593.
The internal clock still functions when the instrument is turned off.
Duplex Out
This field is used to indicate losses or gains between the DUPLEX OUT port and
the device-under-test.
• Enter a positive value to indicate a gain (such as an amplifier gain). The RF Generator’s
level is automatically set that amount below what is indicated in the RF Generator’s
Amplitude field. (Example; if this value is 10 dB, and the Amplitude field shows
0 dBm, the actual level out this port is
−
10 dBm.) The value at the output of the external
amplifier should then be at the level indicated in the Amplitude field.
• Enter a negative value to indicate a loss (such as cable loss). The RF Generator’s level
is automatically set that amount above what is indicated in the RF Generator’s
Ampli-
tude field to compensate. The value at the opposite end of the cable (loss) should then
be at the level indicated in the Amplitude field; unless the resulting RF Generator
setting exceeds the maximum output level, then an error occurs: Input value out
of range . In that case, reduce the Amplitude setting, or decrease the Duplex
Out value.
This field is only used when the
RF Level Offset
field is set to
On
.
Firmware
This field displays the current firmware revision for your Test Set. The revision
number is automatically changed when updated firmware is installed.