BRUEL & KJAER 2206 - Page 12

SOCKET &
INSULATING WASHER:
POWER SWITCH:
WEIGHTING
NETWORK:
SELECTOR:
RANGE SWITCH:
+ 10 dB BUTTON:
OUTPUT SOCKET:
SENSITIVITY
ADJUSTMENT:
TRIPOD BUSHES:
6
See Section 3.6.
The functions of this four position switch are :-
"Off.". No power is supplied to the instrument with the switch in this
position.
"Batt.". Provides a battery check. If the deflection of the meter needle
be below the region marked "Battery" then the battery must be re-
placed.
(See section 3.1.).
"Fast" & "Slow". Give the "fast" and "slow" meter responses respec-
tively.
"A", "C". Selects one of the standardized frequency weighting net-
works . (See section 3.7.).
"Lin . ". Gives a linear frequency response within the range limits of
the instrument.
A ten position switch controlling the gain of the input amplifier in
1 0 dB steps from 30 dB to 1 20 dB. The RANGE SWITCH setting ap-
pears
in the "RANGE INDICATOR" window on the meter scale.
Depressing this button adds a further 10 dB to the measuring range.
When used, 10 dB must be added to all readings.
A standard microsocket accepting B & K cables fitted with microplugs
(e.g. AO 0037) (see section 3.7.).
An adjustable screw potentiometer used for calibration purposes, pro-
viding a change in the gain of the amplifier of 12 dB (see section 3.4.).
Two quarter inch bushes permit the 2206 to be attached to a tripod, a
pistol grip or a wrist strap.