HP 8648 A/B/C/D - Changpuak.ch

Line 50 Clears all status registers. Clearing the status registers
is not absolutely necessary, but is used here because
of the unknown state of the instrument.
Example: Check the start of each frame
18 IjlJTPlJT 719; “!3THT : I;!IJE!:; : PHI;: ENHE: 1 ”
2’8 [IIJ-~-PIJT 71’3; “:sTAT: QIJE!~: Et,jHB ~@SI$,”
:3@ rJlJTPlJT 71’3; “s!;RE :3”
48 IF SF’OLL C71’3> THEt.4 PRINT “Encodir~q 1:1:1!mp1 &.e. ”
58 I:IIJTPIJT 71 ‘3; “w:L:;”
E.8 Et.j[>
Line 10 Enables bit 0 (decimal equivalent 1) in the PAGing
register. Enabling this bit masks other bits in the
PAGing register from reporting their status in the
summary bit to QUEStionable.
Line 20 Enables bit 12 (decimal equivalent 4096) in the
QUEStionable register. Enabling this bit masks other
bits in the QUEStionable register from reporting their
status in the summary bit to STATUS.
Line 30 Enables bit 3 (decimal equivalent 8) of the STATUS
register. Enabling this bit masks other bits from
reporting.
Line 40 Uses the HP BASIC command, SPOLL, (Serial Poll)
to see if the service request bit is reporting any
interrupts.
Line 50 Clears all status registers. Clearing the status registers
is not absolutely necessary, but is used here because
of the unknown state of the instrument.
HP-IB Programming 2-19