2461Type C User Manual
Racal Instruments
1998
Programming The Type C Function Card 4-43
INITIALIZATION:
*RST OFF
INTERROGATIVE FORM
INPut[1 | 2]:FILTer[:LPASs][:STATe]? ==> <ON | OFF>
Returns the current low-pass filter setting for the
specified channel.
*******************************************************
INPut[1 | 2]:COMParator:LEVel:RELative <value | MINimum
| MAXimum | DEFault>
DESCRIPTION:
Selects the comparator threshold level voltage of the channel
selected. The unit for <value> is Volt.
If value is in the range -5.1 to +5.1, then x1 attenuation is
selected for that channel. Outside this range x10 is selected.
Auto trigger is de-selected.
If this command is received while the functions RISE:TIME,
FALL:TIME, PWIDTH and NWIDTH are active, then the error
–240 is generated (“Function Error”).
If this command is received while the functions FREQuency,
PERiod, TINTerval, TOTalize, FREQuency:RATio and
CHECk are active, then, in addition to the setting of the
attenuation level, the following is set:
•
If channel 1 is specified, then manual trigger is set for
channel 1;
•
If channel 2 is selected and SEParate is specified, then
manual trigger is set for channel 2.
•
If channel 2 is selected and COMMon is specified, then
manual trigger is set for channel 1.
If this command is sent while the functions PHASe,
RISE:TIME, FALL:TIME, PWIDTH and NWIDTH are active,
then the error –240 is generated (“Function Error”).
If this command is sent while the functions VOLT:MAX,
VOLT:MIN and VOLT:MIDD are active and the channel
specified is the same as the channel currently configured for
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