BRUEL & KJAER 2221 - Use with Other Instruments; Connecting a Level Recorder

4. USE WITH OTHER INSTRUMENTS
Different instruments can be connected to the AC OUTPUT of the Sound Level Meter, for
example a level or tape recorder, earphones, etc. Use with B & K Level Recorder Type
2306 and Tape Recorder Type 7005/06 is described in the following sections.
4.1. USE WITH LEVEL RECORDER TYPE 2306
Fig . . 4. 1. Portable Level Recorder Type 2306
1. Carry out preliminary checks and fit a 50 dB Log potentiometer on the Level Record-
er (see 2306 Instruction Manual).
2. Set the controls on the Level Recorder as follows:
RECORDING MODE: "AC Log."
SENSITIVITY: To be adjusted later
DC LIN. POSITION: Irrelevant
PAPER SPEED: "3 mm/s" (for example)
WRITING SPEED/LF Limit: "250 mm/s"
PAPER DRIVE: "Off"
POWER: "Off"
PEN DRIVE: "Off"
GROUND+-: Irrelevant
3. On the Sound Level Meter, set:
FUNCTION:
"Leq"
RANGE:
"65 - 125"
MODE:
"Run"
POWER: "Off"
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