Keysight 81150A - Page 567

Remote Programming Reference
81150A and 81160A User’s Guide 567
Command
:DIG:EXT:THR:LOW
:DIG:EXT:THR:UPP
Long
:DIGital[1|2][:STIMulus][:PATTern]:EXTernal
:THReshold[:LOWer]
:DIGital[1|2][:STIMulus][:PATTern]:EXTernal
:THReshold:UPPer
Parameters
<nr3>
Parameter Suffix
-
Description
Defines the threshold to distinguish between logical levels on the external
input. Depending on the number of levels (see :DIG:NLEV), a subset of
the thresholds are actually used.
If NLEV == 2, the LOWer threshold is used to distinguish between ‘0’ and
‘1’.
If NLEV == 3, the LOWer threshold is used to distinguish between ‘0’ and ‘-
‘, while the UPPer threshold is used to distinguish between ‘-‘ and ‘1’.
Example
:DIG:NLEV 3
:DIG:EXT:THR:LOW -0.5
:DIG:EXT:THR:UPP 0.5