Checking The Battery; Battery Check; Battery Replacement; Rechargeable Batteries - 3M 1100 SLM User Manual

6

Checking the battery

Battery Check

Checking the battery
Battery Check
At any time other than initial turn on, if the LOBAT indicator on the display is
activated the user must replace the battery. A 9 volt Alkaline battery is
recommended for best performance. Refer to the label in battery compartment for

battery replacement.

Battery Replacement
Slide the battery door to the left to open the battery compartment and refer to the
label inside the compartment for proper battery orientation.

Rechargeable Batteries

Nicad type rechargeable 9 V batteries (such as Radio Shack® 23-299 7.2 V, 120
mAh) and an appropriate charger may be used with the 1100. The fact that nicad
9 V replacement cells typically operate at 7.2 V will be observed as shorter battery
life (approximately 8 hours with Radio Shack® 23-299). At the appearance of the
LOBAT indicator the nicad battery must be recharged. NiMH (Nickel-Metal-
Hydride) batteries are NOT recommended. This is due to the excessive discharge
of the typical NiMH cell prior to the voltage dropping low enough to activate the
LOBAT indicator.

Calibrate

Changing the Calibration Level

NOTE: There may be times when it is necessary to change the calibration level
that is stored in the meter. This calibration level is the decibel level that is
produced by your calibrator.

Changing Cal level
1. Turn on the meter. The display will show:
a. All segments for 2 seconds.
b. The meter revision number for 2 seconds.
c. The current calibration level stored in the meter for 5 seconds.
2. While current calibration level is in the display, press and hold both the
RESET and CAL buttons for at least 1/2 second or until dashes appear in
the display. Release the RESET and CAL buttons. The meter is now in the
calibration level set mode.
056-652, Rev.D
Battery &
Calibrate
1100/2100 SLM models