Commands Listed in Alphabetical Order
Arguments
<NR3> isafloati
ng point number that specifies the position of the digital channel,
in slot units. Use the oscilloscope front-panel controls to place the channel; then
query the channel to obtain an exact value for the position.
D<x>:THResh
old
This command specifies the logical threshold for the digital channel <x>, where x
is the digital channel number D0 – D15.
NOTE. MDO3
000 models only have two digital threshold controls: one for digital
channels D0 - D7, and the other for D8 - D15. Changing one digital channel’s
threshold l evel changes all of the channels’ levels in the same set.
Conditions
Requires an MSO or MDO4000/B/C model, or MDO3000 with option
MDO3MSO installed.
Group
Vertical
Syntax
D<x>:THReshold {ECL|TTL|<NR3>}
D<x>:THReshold?
Arguments
ECL sets the digital threshold for channel <x> to a preset ECL high level of -1.3V.
TTL sets the digital threshold for channel <x> to a preset TTL high level of 1.4V.
<NR3> is a floating point number that specifies the digital threshold for channel
<x>, in volts.
Examples
D5:THRESHOLD ECL sets the threshold for D5 digital channel to ECL levels.
D14:threshold? might return :D14:THRESHOLD 1.2500 indicating that the
threshold level for the D14 digital channel is 1.25 volts.
*ESE
Sets and queries the bits in the Event Status Enable Register (ESER). The
ESER prevents events from being reported to the Status Byte Register (STB).
For a detailed discussion on how to use registers, see Registers. (See page 3-1,
Registers.)
Group
Status and Error
MDO4000/B/C, MSO/DPO4000B and MDO3000 Series Oscilloscopes Programmer Manual 2-303
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