HP E1563A, User Manual, Page: 97 / 166

Digitizer Command Reference 97
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Reset (*RST) condition: SLOPe1 = POSitive; SLOPe2 = POSitive
:SLOPe[<n>]?
TRIGger:SLOPe[<n>]? queries the present setting for the slope of the trigger
signal for the trigger source (1 or 2) specified. Trigger slope for source number 1 is
returned if “n” is not designated.
Parameters
Note
Trigger slope applies only for TRIG:LEVel when the trigger source is INTernal or
when EXTernal trigger sources are specified.
•
Returns either “POS” or “NEG”.
:SOURce[<n>]
TRIGger:SOURce[<n>]
BUS | EXTernal | HOLD | IMMediate | INTernal1-4 |
TTLT0-7 sets the source of the trigger for all channels or can disable the trigger source.
The
command defaults to trigger source number 1 if “n” is not designated.
Note
Two trigger sources are allowed, TRIG:SOUR1 and TRIG:SOUR2, which are common to
ALL channels on the E1563A and E1564A. SOUR1 is not associated only with channel 1
and SOUR2 is not associated only with channel 2.
Parameters
Comments
•
The TRIGger:SOURce command only selects the trigger source. You must
use the INITiate command to place the digitizer in the wait-for-trigger state.
•
TRIGger:SOURce EXT uses the digitizer’s front panel “Trig” pin in the D
sub-miniature connector as the trigger source. The digitizer triggers on the
falling (negative-going) edge of a ±5V TTL input signal (maximum input is
+5V peak to the front panel D sub-miniature connector “Trig” pin).
•
TRIGger:IMMediate causes a trigger to occur immediately provided the
Parameter
Name
Parameter
Type
Range of
Values
Default
Units
n
numeric 1 or 2 None
Parameter
Name
Parameter
Type
Range of
Values
Default
Units
n numeric 1 or 2 None