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6-12 Buffer and Sweeps Model 6487 Reference Manual

SCPI programming — sweeps

Interlock

Attempting to initialize a sweep over the front panel while the interlock is open and failing

will result in the error message "CLOSE INTLCK" being displayed. If trying to arm

remotely with the SOUR:VOLT:SWE:INIT command, the error event +802 "Output

Blocked by Interlock"is generated.

Trigger model

Sweeps do not change any of the trigger model settings (Section 7), other than to inter-

nally perform the equivalent of an ABORt command and return to the Idle layer when the

SOUR:VOLT:SWE:INIT command is received. Trigger and Arm Counts, sources, and

delays are exactly what they were before the sweep was started. The only difference is that

the sweep delay is added between the setting of the source to the new value and the acqui-

sition of the reading.The implications of this fact are that you must have the trigger and

arm counts properly set before sending the SOUR:VOLT:SWE:INIT command.

Example A

*RST

SYST:ZCH OFF

SOUR:VOLT:SWE:STAR 0

SOUR:VOLT:SWE:STOP 10

SOUR:VOLT:SWE:STEP 1

SOUR:VOLT:SWE:DEL 2

SOUR:VOLT:SWE:INIT

INIT:IMM

Because the *RST command sets the ARM and TRIG layer counts both to 1, the

INIT:IMM will take only a single reading in the sweep. To collect all 11 readings, you

would need to send eleven INIT:IMM commands. After each INIT:IMM command

arrives, the source will jump immediately to the new voltage, there will be a two-second

delay, then the reading will be collected.

Example B