Agilent Technologies Eyesys Mini-B/A, Instruction Manual

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Eyesys Mini-B/A Gauge Controller
10
Remote Control Lines
Available at the 15-pin connection are control inputs and status outputs (Table 6) for
emission (filament) and degas.
Inputs
The Degas ON/OFF and Emission ON/OFF inputs are TTL level controls, normally high
(with “weak” internal pull-ups), with High representing OFF and Low representing ON. If
Emission or Degas is turned off automatically (for example, error condition or Degas
timeout) the control line should be brought to the OFF state before attempting an ON. This
action with the Emission control line clears the errors (see error conditions).
The “Emission Control, Pulse” input is functionally equivalent to the Emission push button.
Like the button, it is intended to be momentary, and is activated by grounding for a duration
of at least 100ms but not to exceed several seconds. See the corresponding button
description in “Front Panel Controls” on page 7 for operation details.
Serial Communication Option: As with the control buttons, control inputs are available only
in Local mode.
Outputs
Status outputs are TTL, with high representing ON, and low OFF.
Table 6 15-Pin Inputs and Outputs
Inputs Outputs
Degas ON/OFF Degas Status
Emission ON/OFF Emission Status
Emission Control, Pulse