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FRONT PANEL PROGRAM
5
The front panel program F FECMHT allows you to use the HP 3421 A Data Acquisition/Control Unit as a
bench instrument in much the same way that you would use a conventional instrument.
The program
redefines the functions of many of the HP-71 keys.
These command keys control the front panel
program, and through it, the operation of the HP 3421A. In effect, the HP-71 becomes the front panel of
the HP 3421A.
Upon startup, the program performs the following functions in order:
Displays the message Reading the HFZd4Z21.
Finds the first HP 3421 A on the loop.
Reads the configuration of the HP 3421A into memory.
Sets the program to read DC Volts.
Prepares to service keyboard requests for program options.
Begins reading the HP 3421 and displaying the result in the display.
You can identify the front panel command keys using the keyboard overlay provided. The overlay,
installed on the HP-71, is shown below:
ser DC Volts
PRGM
|
|
SMEEEOTORE EE]
AIT] Ee] HI KIL [=] [+ Ls 16 ][ +]
-£
TC-J
TC-K
TC-R
TC-S
TC-T
RESET
ZX CME MME L1 | 2 J 3][-]
FIX
[EEE ERM CCE]
Front Panel
The identity of each command key is shown above the key on the overlay.
For example, to select DC
Volts, press [DCV] (the
key). To select AC Volts, press [ACV] (the (Q) key). For convenience, each
command key will be identified in this section by its name on the overlay.
5-1
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