©2001 - INLINE, Inc.
IN3260 Operation Manual - V 1.0 10/31/01
3
Manual Emulation Sense Pin Selection
The IN3260 cannot automatically emulate some MAC monitors. Some newer MAC G3 / G4
models require jumper pin 11 to be grounded in order for the PC to boot-up. Manually adjusting,
or grounding jumper pin 11, allows the user to force the video card into the proper configuration. If
so desired, grounding pin 11 on the video output connector [15-pin HD male] will achieve the same
results.
Note: JP2 must be closed.
STEREO AUDIO BUFFER OPERATION
The IN3260 accepts unbalanced stereo audio signals applied to the 3.5mm stereo mini audio input
connector. This signal is amplified and split into the Local Audio and Main Audio Outputs as
indicated in the chart below:
Local Audio Output
Main Audio Output
Connector Type /
Location
3.5mm Stereo Mini Female
Located on Interface
5-pin Captive Screw Terminal
Located on PCB
Signal Format
Unbalanced Audio
Balanced Audio (Factory Default) or Unbal-
anced Audio Depending on Jumper Settings
Local Audio Output
The IN3260 outputs unbalanced stereo audio at the local audio connector, permitting a local audio
device such as powered speakers, an audio / video recorder or teleconferencing codec input to be
connected.
Main Audio Output
The main audio output is a 5-pin captive screw terminal located on the back of the video
distribution amplifier. The factory default signal for the main output is unbalanced audio. By
setting the jumpers (JP#) to the appropriate positions, the main output can be set for balanced
audio (see illustration on page 4). This is desirable for systems where the audio signal will be
connected to equipment with balanced audio inputs, and is helpful in preserving signal integrity
and minimizing outside signal interference when sending the audio signal over lengthy cable runs.
The main audio output can be set for balanced or unbalanced output by setting the four jumpers as
indicated below:
Unbalanced Output Signal (Factory Default)
Balanced Output Signal
JP3 / JP4: Closed
JP5: Jumper Connects 2 Upper Pins
JP6: Jumper Connects 2 Lower Pins
JP3 / JP4: Open
JP5: Jumper Connects 2 Lower Pins
JP6: Jumper Connects 2 Upper Pins
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