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Service
Model 35601A
The High Frequency Menu is selected (once the procedures in the *'Starting the Program"
paragraph have been followed) by entering HF to the prompt for testing the high or low fre
quency section of the
T
hp-35601A and pressing the computer continue key. Similarly, the
Low Frequency Menu is selected by entering LF and pressing the computer continue key.
In either menu, test routines are selected and run by pressing the special function key (SFK)
for the desired test. Two menu selections are used for troubleshooting the instrument and
accessing the menu that is not displayed. The SWITCH entry accesses a routine that aids the
technician in troubleshooting the -hp-35601A by setting internal switches, relays, at
tenuators, and amplifiers to obtain alternate signal paths. The INITIALIZE PROGRAM-
CHOOSE HF/LF MENU entry provides access to the alternate (high frequency or low fre
quency) menu routines from the displayed menu.
NOTE
If you are beginning the tests and adjustments procedures on an
instrument for the first time, (i.e., for initial testing or prior to ser-
vicing) select the High Frequency Menu and run the tests sequen-
tially (exclude the SWITCH routine). Then select the Low Fre-
quency Menu and run these tests sequentially.
NOTE
If you find that the -hp- 3 5601A is not responding to HP-IB com-
mand, proceed directly to Service Group Four (Al - HP-IB control
and Power Supply). The HP-IB handshake circuitry must be
working before the -hp-35601A test program can be of any use.
6-6
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