c. To stop or interrupt LDF operation at any time, the LOAD/UNLOAD switch is set
momentarily to the UNLOAD position then released.
d. In order to keep transmission time to a minimum, messages should be composed so that the
entire message, including signatures, is positioned as close to the top of the page as possible. This
practice reduces transmission time for shorter messages to a fraction of the time normally required to
send a full page either in Mode A or Mode B.
e. Send and receive operations described in paragraphs 2-7.1 and 2-7.2 of TM 11-5815-615-10
should be performed simultaneously by each operator, coordinating specific steps by voice using the
handset or telephone set as noted in the procedures.
2.
Send Operation. To operate the sending LDF in Mode A, perform the following procedures:
a. Set MODE/DATA FORMAT switch (Figure 6) to MODE A position.
b. Set PUSH FOR ON power switch to ON position and verify that POWER ON indicator
lights.
c. Press PAPER RELEASE lever firmly, insert the input copy with the left-hand edge of the
copy in drum and face up, then release lever. Margin lamps flash for 10 seconds maximum.
d. Set carriage START handle just slightly beyond right edge of message being sent. Set
carriage STOP handle at end of message to be transmitted. Margin lamps stop flashing within 10
seconds. Press and release PAPER RELEASE lever to start margin lamps flashing again, if necessary.
e. Set ANLG/ANLG(V) DIGITAL, HI RES LO SP/HI SP LO RES, and GRAY B/W switches,
respectively in accordance with desired operational configuration. (Refer to Table 7.)
NOTE: If field wire or public telephone system interconnection is used, the jumper plug
assembly must be installed on signal connector J1 (Figure 7).
f. Using handset (radio link) or telephone set (field wire or telephone system connection),
inform receiving LDF operator of the following:
(1) A message is ready to be transmitted.
(2) Proper setting of AN/ANLG(V) DIGITAL, HI RES LO SP/HI SP LO RES, and GRAY
B/W switches.
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