Larson Davis 831C-FFT, Reference Manual

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SoundAdvisor Model 831C Assembling Your 831C SLM 10
• Gripping tightly or screwing tightly is unnecessary.
• Do not remove the microphone grid cap and expose the diaphragm.
FIGURE 2-1 Microphone and Preamplifier PRM831
The bottom of the microphone attaches to the top of the
preamplifier. The preamplifier body houses a single gold pin with
threads on the top edge, which are designed to fit the 1/2-inch
microphone.
CAUTION
Do not allow dust or debris to collect in an unassem-
bled preamplifier.
Step 1.
Carefully place the bottom of the microphone over the top of the preamplifier
and gently screw the assembly together. The microphone body should seat
smoothly against the preamplifier body.
To disconnect the microphone:
• Lightly grip the 2 engraved lines on the microphone body and gently turn.
2.1.2 Connecting the Preamplifier to Meter
CAUTION
Do not attempt to screw the preamplifier onto the 831C
Step 1.
Both the preamplifier and the preamplifier housing on the meter are marked for
correct alignment; look for a vertical, engraved line on the preamplifier, which
aligns with the arrow about the button on the 831C. For reference, see Figure 2-2 .
Step 2.
With the alignment marks on both pieces lined up vertically, insert the 5-pin
connector at the bottom of the preamplifier snugly into the top of the 831C until
you hear a small click.
2.1.3 Disconnecting the Preamplifier
Step 1.
To disconnect the preamplifier, press and hold this button while gently pulling
the microphone/preamplifier assembly from the meter.
FIGURE 2-2 831C Preamplifier Housing