AT&T DATASPEED 4A Installation And Checkout Manual page 12

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ISS 1, SECTION 592-811-200
TABLE - CHECKOUT PROCEDURE (continued)
Check
Terminal Operation -
EDC Mode (continued)
Reader Test
Action
Place REVERSE CHANNEL
SIMULATE switch in OFF
position.
Place REVERSE CHANNEL
SIMULATE switch in ON
position.
Operate STOP-ALARM/
RESET switcho
Operate STOP-ALARM/
RESET switch.
Allow end of tape to pass
through reader.
With tape in the reader, the
STOP-ALARM/RESET switch
off (indicator out), the MANUAL
indicator on, and the REVERSE
CHANNEL SIMULATE switch
in the OFF position, put the
READER TEST switch in the
ON position.
Cause the tape in the reader to
stall slightly so that an error
in reading will occur.
Place the READER TEST
switch to the OFF position and
then back to the ON position.
Return all switches to their normal position.
I '
Verification
RECEIVER STOPPED indica-
tor lights. Reader will stop at
the end of the current block,
back up the tape two blocks
and then stop.
RECEIVER STOPPED indica-
tor goes out. Reader runs in
forward direction, as above.
STOP-ALARM/RESET indi-
cator goes on. Reader will
stop at the end of the current
block, back up the tape one
block and then stopo Motors
will turn off. RECEIVER
STOPPED indicator remains off.
STOP-ALARM/RESET indi-
cator goes out. Motors turn
on. Reader runs in the forward
direction, as above.
STOP-ALARM/RESET indi-
cator goes on. Reader will
stop at the end of the current
block. No backup will occur.
Motors turn off.
Reader will run in the forward
direction, as in normal EDC
operation, with slight pause at
end of each block of 80 charac-
ters. Programmer cycles
between BN and CK2 modes.
Reader will stop at the end of
the current block and then back
up two blocks. RT A light on
transmitter control module
will light and RCD indicator
goes off.
RTA light will go off. Reader
will run in forward direction.
Page 11
11 Pages
Added, April 1973
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