Delay <N - Keithley 2500 User Manual

Models 2500 and 2502 User's Manual
Description
DELay <n>
:SOURce3:CLEar:AUTO:DELay <n>
Parameters
Query
Description
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This command is used to enable or disable auto-clear for the digital out-
put lines. When enabled, the output pattern will clear automatically after
the pass or fail output bit pattern of a limit test is sent to a handler via
the digital output lines.
The :DELay command specifies the pulse width of the limit test bit pat-
tern. See the next command. After the delay period times out, the digital
output clears back to the output pattern programmed by the :TTL:LEVel
command.
When auto-clear is disabled, the digital output pattern can only be
cleared by the :IMMediate command.
On power-up, auto clear is enabled.
See "CALCulate <item list>," page 17-49,
limit tests.
<n> = 0 to 60
DEFault
MINimum
MAXimum
:DELay?
:DELay? DEFault
:DELay? MINimum
:DELay? MAXimum
This command is used to set the delay for digital output auto-clear. This
delay determines the pulse width of the limit test output pattern as
required by the handler. After the delay, the output returns (clears) to the
pattern programmed by the :TTL:LEVel command.
The delay actually defines the pulse width for line 4, which is used by
category register component handlers as the EOT (end-of-test) strobe.
The pulse width of the other three lines are 20µsec longer (10µsec
before line 4 is toggled, and 10µsec after line 4 is cleared). Skewing the
timing on line 4 provides setup and hold time for category register com-
ponent handlers. See Section 11
SCPI Command Reference
and Section 11
Set delay for auto-clear
Specify delay (in seconds)
100µsec delay
0 sec
60 sec
Query delay
Query *RST default delay
Query lowest allowable delay
Query maximum allowable delay
for details on timing.
17-77
for details on