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2.7.2 Setting the GPIB Address
The GPIB Address is set during the power on sequence using the keypad and the ENTER key.
Turn on the PMC. The PMC will display GPIB ADDRESS = XX. If the desired address is
displayed, press the ENTER key to begin the Self-Test Function Test. The GPIB address may
only be changed while it is being displayed by entering a one or two digit address and pressing
ENTER. After pressing 'ENTER' the new GPIB address is stored in non-volatile memory.
2.7.3 Power-On Sequence
During the Power on sequence after the GPIB ADDRESS message is displayed, the PMC will
perform a Function Test. (See Section 2.8 for details.) GPIB commands are ignored during these
tests. The Function Test may be bypassed by pressing RESET while the PMC displays its GPIB
ADDRESS. Press RESET to return the PMC to the RESET mode. Once in the Reset mode a
GPIB controller can communicate with the PMC through the GPIB port. INTERFACE CLEAR
command (IFC) resets the PMC interface functions only; it does not affect the PMC operating
modes.
2.7.4 Remote Programming Function Tests
The Function Tests may be performed remotely using the appropriate GPIB command (see Table
2.4). Upon successful completion of the Function Test, PASSED FUNCTION TEST is displayed
and SRQ is asserted. The PASS code (see Sec. 2.7.7.1) is reported to the GPIB controller when
the PMC is serial polled.
2.7.5 Numbers
The PMC accepts decimal numbers expressed as an ASCII string and if needed may contain an
embedded decimal point character. The sign character (-) or optional (+) precedes the number
string of up to four digits. The numeric entry string must end with a unit suffix.
For a PMC output of 5 volts the following are equivalent:
5V (LF)
+5V (LF)
5.000V (LF)
5V (CR) (LF)
For output values less than or equal to 100mV, use the MV/MA key; otherwise use the V/A key.
For example to set the PMC output to -26.25 millivolts use -26.25MV, but not -.02625V. Also
use .420V but not 420MV to obtain 420 millivolts on the 1 V range.
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