Valhalla Scientific 4300C, Руководство по эксплуатации

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The following program shows an example of setting the ranges of the 4300C. The program is written in
HP Basic. If you are using a programming language or package other than HP Basic, consult your
Programmer's Manual for the correct command syntax. The 4300C is assumed to be at address 12.
10 REMOTE 712
20 OUTPUT 712; "V 2, I 3, C 1 "
30 WAIT 2
40 ENTER 712; A$
50 PRINT A$
60 LOCAL 712
70 END
The result of this program is to set the 4300C to the 2V, 100mA ranges and turn on the test current. The
controller waits for 2 seconds (for settling), then retrieves the measured value. The 4300C is then returned
to local mode.
Voltage Range
The "V" command is used to set the full-scale voltage range of the internal voltmeter. The 4300C interprets
this command as follows:
V0 - Selects the 20mV range
V1 - Selects the 200mV range
V2 - Selects the 2V range
Test Current Range
The "I" command sets the value of test current that will be used to make the resistance measurement.
The 4300C interprets this command as follows:
I0 - Selects .1mA
I1 - Selects 1mA
I2 - Selects 10mA
I3 - Selects .1A
I4 - Selects 1A
I5 - Selects 10A
SRQ's and Serial Polls
The IEEE-488 bus incorporates a serial line that may be used by a device on the bus to alert the controller
if problems are encountered or if it requires attention. This method draws attention to a device without
disrupting normal bus operation. The controller may then choose to ignore or act upon the request.
The "SRQ" or "service request" line may be asserted to alert the controller. The 4300C may be setup using
the "Q" command to assert SRQ if the controller sends data to it that is not decodable by the 4300C.
Q0 - 4300C will not assert SRQ (default)
Q1 - 4300C will assert SRQ if it receives a command that it does not understand