Sensors; Db Attenuators (Pads); External 10 Db Step Attenuator - Agilent Technologies 8711C Service Manual

The beeper (on).
he last selection will suppress or enable the beeper, as desired.
The current DUT le sux (1).
current device under test. Up to ten di erent le names can be speci ed. his allows multiple
users to operate from one system storage medium, such as an SRM environment. his entry
can be ignored for single-user applications.
6. Once all desired changes have been made, the program will ask if you want to store the
data just entered. A speci c 4-character le name sux can be provided if more than one
con guration is required. Leaving the le name blank will result in the default le name of
\Cfg d t." If the program nds only one con g le, that le will be loaded automatically.
If more than one is discovered, the program will list the le names found and allow you to
choose one. At this point the program will also ask you if a hardcopy printout is desired.
7. After the con g le has been generated, the proper data les containing the correction
values must be generated. Press

3 sensors

an external 10 dB step attenuator
two 20 dB attenuators (pads)
You will need to enter the correction data for every piece of test equipment included in this
list that you will be using to test the analyzer. Select the desired item.
Sensors.
All sensors require both frequency and cal factor data. Frequencies must always
be in MHz and cal factors in percent. he rst entry requested will be the last four digits of
the serial number. he computer will search for a current con guration le containing this
information. If one is present, the program will query you to either view or edit the old values.
Assuming you are editing the data, the 50 MHz reference cal factor will be requested next.
his value must use percent as its units and be within the range of 50 and 150 percent.
After the cal factor is entered, the program will request that all frequency/cal factor pairs be
entered. You must start with the lowest frequency for which you have data and sequentially
enter higher frequencies until done. Each entry must consist of both a frequency in MHz and
the cal factor in percent, separated by a comma (e.g. 500, 98.6). Each frequency entered
must be higher than the previous entry. hese cal factor values must be between 75 and 125
percent. If a mistake is made, you can back up one entry and re-enter a value by entering a
negative frequency. If you accidentally enter only the frequency (instead of a frequency/cal
factor pair), the computer will wait for the cal factor to be entered; however the only prompt
will be a \?".
Each entry is shown on the CR . When all entries are completed, enter \0,0" to exit the data
entry portion of the program. At this point the program will re-display all values entered and
ask if you want to store them.
Note
Even if you nd a mistake, it will be easier to answer yes, then go back and
re-edit the values, otherwise you will have to re-enter all values again.

20 dB Attenuators (Pads).

described is used to enter the frequency/attenuation values for the 20 dB attenuators. Valid
entries for the 20 dB attenuator range from 17.5 to 23.5 dB.

External 10 dB Step Attenuator.

one value needs to be entered for each nominal attenuation step. All values are relative to the
0 dB setting, which is de ned as zero (i.e. the program does not care about insertion loss at the
0 dB setting).
1-18 Performance T ests
his le, \CurrDU x," contains the test-result data of the
CAL DATA ENTRY
A procedure similar to the sensor data entry procedure previously
Step attenuator data is only measured at 30 MHz so only
. You will be shown a list including: