Appendix B Digital Port Functions
98 Series E4360 User’s Guide
Digital Input
Each of the seven pins can be configured as digital input only. The
polarity of the pins can also be configured. Pin 8 is the signal common
for the digital input pins. The pin status reflects the true condition of the
external signal that is applied to the pin. The pin state is not affected by
the value of the binary output word.
To configure the pins for digital input only:
Front Panel:
SCPI Command:
Select
System\IO\DigPort\Pin<n>,
where <n> is the pin number.
Select Function, then Digital In.
Go back one level, select Polarity,
then either Positive or Negative.
To read the data from the pins,
select System\IO\DigPort\Data.
The input data is displayed as a
binary number in the Data In field.
To configure the pin function:
DIG:PIN<1-7>:FUNC DINP
To configure pin polarity:
DIG:PIN<1-7>:POL <pol>
To read the pin data:
DIG:INP:DATA?
External Trigger
Each of the seven pins can be configured as either trigger inputs or
trigger outputs. The polarity of the pins can also be configured. When
you program trigger polarity, POSitive means a rising edge and NEGative
means a falling edge. Pin 8 is the signal common for the trigger pins.
When configured as a trigger input, you can apply either a negative-
going or a positive-going pulse to the designated trigger input pin. The
trigger latency is 5 microseconds. The minimum pulse width is 4
microseconds for positive-going signals, and 10 microseconds for
negative-going signals. The pin’s polarity setting determines which edge
generates a trigger-in event.
When configured as a trigger output, the designated trigger pin will
generate a 10 microsecond-wide trigger pulse in response to a trigger
event. Depending on the polarity setting, it can be either positive-going
or negative-going when referenced to common.
BUS
Trigger
Signal
DWEL <1-2>
ACQ <1-2>
TRAN <1-2>
DIG:PIN<3-7>:FUNC TOUT
TRIG
OUT
10
us
DIG I/O
FAULT
MULTI-
PLEXER
ON Couple
OFF Couple
DLOG <1-2>
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