Setup guide

10
12
11
13
9) Plug your headphones into the PHONES jack to monitor the
audio. Be sure that the VOLUME control is set low to avoid
excessively loud audio from damaging your hearing.
10) Turn the adapter PWR switch ON. The power LED should
light green indicating good battery voltage.
11) Activate the 48V phantom power switch for only those micro-
phones that require 48 volt phantom power to operate. Do
not activate phantom power for dynamic microphones, con-
denser microphones that do not operate on phantom power,
wireless receivers, mixing boards or any unbalanced device
as it may cause damage to both the adapter and connecting
device.
Basic Operation
After following the above Initial Setup, you should be ready to
start recording.
1) Use the signal indicators on the adapter to set the proper
output levels for recording. Increase the level controls for each
channel that is being used so that the signal level LED flickers
green. If the indicator turns red, decrease the level so that
it flickers green again.
2) Adjust the VOLUME control for the headphones to a com-
fortable listening level.
3) Do a test recording and play back the audio from the camera
to determine if the captured audio is acceptable. Set the
MONITOR switch to RCA to hear the playback audio from the
camera.
4) The Auto Gain Control (AGC) in the camera will vary the
amount of gain depending upon the input signal level. During
quiet moments, the AGC will increase the gain, which will also
increase the amount of hiss from the camera preamplifiers.
See "Using the AGC DSBL Feature" below to reduce this
problem.
Advanced Operation
Using the AGC DSBL Feature
This switch is a means to disable the wild swings of the Auto Gain
Control in the camera. It activates an inaudible tone of 20 kHz
to the left channel (when set to STEREO operation) that prevents
the Auto Gain Control from increasing the gain to its maximum
level. This reduces the hiss that normally occurs when the camera
is recording audio during quiet moments. This inaudible tone is
recorded by the camera but can be easily filtered out if necessary.
You can still use the left channel for recording normal audio at
the same time that the AGC DSBL feature is active.
You may also want to record audio only on the right channel and
leave the left channel unused for the AGC control signal if this
tone presents a problem down the line. In this case, you should
set the M/S switch to S for stereo to keep the AGC signal separated
from the recorded signal.
Again, it is important that you do a test recording and play back
the audio to see if it is acceptable.
Features
Inputs
• Two balanced XLR connectors
• One unbalanced mini-jack
• Two RCA inputs for playback monitoring
Outputs
• Unbalanced stereo mini-plug jack for connection to the camera
Headphone Monitor
• Built-in headphone amplifier with volume control
• 3.5 mm phone jack
Auto Gain Control Disable
• Controls the wild swings of the AGC in the camera to reduce hiss
Phantom Power
• Switchable 48 volt phantom power for both channels
Signal Indicators
• Dual color LED's indicate proper signal level for each channel
Gain Switch
• High / Low gain setting for each channel
Level Controls
• Adjusts signal level output on each channel
MIC/LINE Switches
• Allows connections of microphones or mixers for versatility
Low Noise Preamplifiers
• Exceptionally low noise circuitry for superb audio
• Wide-bandwidth for full rich sound
Playback Monitor
• Provides an easy way to monitor audio on playback
Power
• Easily replaceable 9 volt battery
• Low battery indicator
Case
• Sturdy die-cast aluminum enclosure