BNC 6040 User Manual

Page 38

OPERATING INFORMATION

TR PCC {x} Trigger Control, where the secondary PCC is one of the following:

ED {v}

External Drive (threshold set for v volts)

External Trigger Slope, positive

External Trigger Slope, negative

ET {v}

External Trigger {threshold set for v volts}

IN {f}

Internal Trigger {rep rate set to f Hertz}

Single Cycle

If the value {x} is omitted, the current value is returned. If the string

TR IN 1E3 were sent,

the internal rep-rate generator would be set for a frequency of 1.000 kHz. A subsequent
string

TR IN would cause the return of the 20 character string Trg Int: 1.000 kHz."

Once Single Cycle operation has been selected, the 6040 can be triggered with the EX
command (see the Supplemental Control Commands section).

TI PCC {x}

Timing Control, where the secondary PCC is one of the following:

DL {t} Delay {set for t seconds}
WD {t}

Width {set for t seconds)

Single Pulse

Double Pulse

Width and Delay commands terminate the current liming cycle when received by the
6040 (just as the EXEC key does under manual operation).

If the value {x} is omitted, the current value is returned. If the siring

TI WD 1.23E-3 were

sent, the delay would be set for 1.2300 ms. A subsequent string

TI DL would cause the

return of the 20 character siring "Width 1.2300 ms."

LV PCC {x}

Level Control, where the secondary PCC is one of the following:

AV {x}

CW level {set for x units}

BL {x}

Baseline level {set for x units)

EM {x}

External Modulation level {set for x units)

PK {x}

Peak level {set for x units}

If the value (x) is omitted, ihe currenl value is relumed. If ihe siring

LV PK 1.23E-3 were

sent, the peak level would be set to 1.23 mW (for an optical module). A subsequent
siring

LV PK would cause the return of the 20 character string "Lv Peak: 1.23 mW."

The unit used is dependent on the module.