MIL-I-81987(AS)
BIT-3 - The BIT-3 mode used in conjunction with BIT-2
(7)
shall provide sufficient built-in-test to indicate to the
operator that the unit operates properly in the R-MSG mode
with 80% confidence. The BIT-3 shall verify reply message
conversion and display near full scale of RO, R1, R3A, R3B,
and R3C reply messages. Messages from the Stored Message
Generator may be used to accomplish this built-in-test mode.
BIT-2 and BIT-3 modes combined may use up to eleven
messages from the Stored Message Generator.
3.7.1.5.3 Reset - A momentary pushbutton switch shall be provided as a master
reset for the test set, Whenever power is switched on for the test set, the reset switch shall
be used to clear and initialize all logic in the test set, The reset switch is also the control
that extinguishes all displays on the panel with the exception of XMTD MSG, R-MSG,
and C-MSG, No Reply and Cancel Reply displays.
3.7.1.5.4 Stored Message Generator AUTO/OFF/MAN - A three position
toggle switch shall provide for the following modes of operation for the Stored Message
Generator.
(1)
O F F - In this position there shall be no output from the
Stored Message Generator though power may still be applied.
(2)
MAN - The manual position shall cause the Stored Message
Generator to output a message every 96 milIiseconds on a
continuous basis. The message transmitted is the stored
message selected on the SELECTOR thumbwheels except
when the Monitor Mode switch is in a BIT position. The
transition of the AUTO/OFF/MAN switch from the OFF to
MAN position shall initiate this mode.
(3)
A U T O - The automatic position shall cause the Stored
Message Generator to sequence through a series of messages
determined by the Monitor Mode selection, the SELECTOR
thumbwheel settings, and stored message in the read only
memory of the message generator. In the following automatic
modes the transition of the AUTO/OFF/MAN switch from
the OFF to AUTO position shall initiate the sequence.
-9-
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