TM 11-6625-3087-12
Section Ill.
OPERATION UNDER USUAL CONDITIONS
2 - 4 . GENERAL.
Operation is broken down into ten individual operating procedures. Before measurement of a specific signal can be made, the
operator must determine which of the ten operation modes will perform the desired measurement. Table 2-3 is a cross-
reference of the Level Meter measurement mode to the type of signal to be measured. Error messages encountered during
operation will be displayed in the measurement/entry area. Table 2-2 lists all operator errors and the probable cause.
2-5. PREPARATION FOR USE.
a. Connect the BNC adapter (1) to the 10MHz OVEN output and EXT REF 10MHZ input connectors on the rear panel.
b. Locate line voltage switch (2) on rear panel of Level Meter. Verify line voltage switch and fuse size are correct for
your power source (table 2-1 ).
Fuse
Switch Position
Input Voltage
90 to 105
UP
UP
2 amp
108 to 126
UP
DOWN
2 amp
198 to 231
DOWN
UP
1 amp
216t0252
1 amp
DOWN
DOWN
c. Check fuse (3) to see if it is missing, broken, or appears to be blown. If fuse is missing, broken, or appears to be
blown, contact organizational maintenance.
2-6. TURN-ON PROCEDURES.
With the power cable connected to the rear panel power input connector, verify that the STBY light is illuminated.
a.
b. Push the POWER BUTTON (1) in and release. Verify that the button remains in and that all front panel controls and
indicators illuminate for approximately two seconds and then go blank. Verify that the fan on the rear panel is operating.
c. Verify that the FREQUENCY/ENTRY (2) displays "3586 b OP". The MEASUREMENT ENTRY (3) display will
cycle an AUTO CALIBRATION. It will display "CAL". Verify that after the calibration cycle completes, no errors are
present in the MEASUREMENT/ENTRY display, If an error is displayed, "CE", "E" or "Err" followed by a number, see
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