TM 5-6635-386-12&P
1/4, 1/2, 1 or 2
=
SIMULTANEOUS COUNT OF BOTH CHANNELS
TEST + ANY DISPLAY
=
DISPLAY TEST (88888)
TEST + LOCK
=
INTERNAL CHECK (65536) (16384 after 7/78)
STD + LOCK
=
STANDARD COUNT (4 MIN)
D-ONLY or M-ONLY
=
ONLY COUNT ONE CHANNEL
NOTE
Some testers do not have the D-only or M-only keys.
CLEAR
=
STOP COUNT (Does not reset to zero)
D-DATA or M-DATA
=
DISPLAY LAST FIELD COUNT
D-STD or M-STD
=
DISPLAY LAST STD or TEST COUNT
NOTE
All count periods are "normalized" to a common time
base of 1/4 minute to reduce operator work in the field.
After approximately July 1978, Internal Check
(TEST+LOCK) will count only 1/4 minute and will display
16384.
Both TEST/LOCK and STD/LOCK count into all four
channels as a cross check for counting accuracy.
If nothing at all happens when the touchkeys are
pressed, the batteries are completely discharged or are
disconnected. See Para 1-1. (General Operation) and
also Para 3-5. (Battery Replacement).
If a mistake is made in starting the count, clear the tester
with the CLEAR key and restart the sequence. This will
clear all stored commands. If an erroneous time cycle
was pressed, it is necessary only to press the correct
touchkey to restart on the correct time cycle.
To take a density count only and NOT take a moisture
count, press D-ONLY. The previous moisture count will
be stored. The D-ONLY command will erase at the end
of the count cycle. M-ONLY follows a similar
circumstance.
The tester will automatically take its own 4 minute
standard count, if STD and LOCK are pressed
simultaneously. All four memories are erased and the
standard count is fed into all four memories See Para 1-
7, Standard Count.
The tester may be internally checked by pressing TEST
and LOCK simultaneously. The tester will count for one
minute, providing a fixed time base pulse to all four
memories. All four memories should read 65536 at the
end of the count period. (1/4 minute and 16384 after
7/78).
The LOCK key prevents an accidental field erasure of
the standard count memories by an inadvertent pressing
of the STD or TEST keys.
1-7
