Communications Company IC-29, Руководство пользователя

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Page 8
COMMUNICATIONS COMPANY • IC-29 Manual
IRL
IN TO OUT
OPTION I/O
J7
REMOVE JMPR
TO INSTALL
OPTION PCB
IN REM LEVEL NORM
ORL
OUT REM LEVEL NORM
SWITCH OVER DELAY
REMOVE JUMPERS
TO ADD TIME
200MS
100MS
200MS
IN
IN
OUT
OUT
SPARE JUMPERS
100MS
OUT TO IN
OPTION I/O
J6
REMOVE JMPR
TO INSTALL
OPTION PCB
VCA/LIM OUTSIDE MIC TO INSIDE SPEAKER VCA/LIM INSIDE MIC TO OUTSIDE SPEAKER
COMMUNICATIONS CO. INC.
IC-29 INTERCOM AMPLIFIER
REV E
FRONT
Hex Standoff (Typical)
OPTION BOARD
IN to OUT
OPTION BOARD
OUT to IN
Option boards are plug-in circuit boards for the IC-29 which allow the installer fast and easy ways to fine-tune a
particular installation site.
IC-29 NOTCH FILTER PCB 12300245-A
FREQ 1
FREQ 2
IC-29 DELAY LINE PCB 12300248
There are two option boards available for the IC-29, the Notch Filter board and the Audio Delay board. The Notch
Filter board provides two screwdriver adjustable filters used to tune out feedback modes and help compensate
for small live room acoustics. The Notch Filter board can be installed in either channel of the IC-29. The Audio Delay
board provides 55ms of audio delay in the talk channel (In to Out) for VOX operation in order to avoid chopping
the first syllable speech, this board must mount in the "In to Out" option slot.
INSTALLING AN OPTION BOARD
Installation requires a 1/4" nutdriver or pliers, and a small phillips screwdriver.
1. Unplug the IC-29.
2. Remove the cover.
3. Locate the option board connector pins. They are in the center, toward the front of the IC-29.
4. Decide on which side you need to install the option board:
IN to OUT. Affects the inside microphone and the outside speaker.
OUT to IN. Affects the outside microphone and inside speaker.
(Usually a Delay Board is installed on the IN to OUT side only.)
5. Install the standoffs supplied with the option boards.
a. Unscrew and save the two phillips-head screws in the IC-29 that will be replaced by the
standoffs. (See figure )
b. Using the 1/4" nutdriver or pliers, screw in the standoffs where you unscrewed the phillips-
head screws.
6. Remove the black jumper on the pins on the right side of the option board connector.
7. Line up the two standoffs and the holes in the option board, and carefully install the option board
on the connector pins, taking care not to bend the pins.
8. Take the two screws you removed earlier and screw them into the standoffs, securing the option
board to the IC-29 assembly.
9. Install the cover back on the IC-29.
IC-29 OPTION BOARDS
NOTE: Option board installation should
only be done by a qualified technician.