7
BIDA Series
Instruction Manual
THERE ARE NO USER SER VICE ABLE PARTS IN THIS UNIT.
INFORMATION BELOW IS FOR QUALIFIED INSTALLATION PERSONNEL ONLY
Field Installable Optional Modules.
Take care not to bend jack pins when plugging in modules - view orientation of pins through holes provided - pins are
polarized to prevent wrong installation - see Location Diagram.
Leakage-current and/or resistance measurements should be made by service technician after repairs are completed to
determine that exposed parts are acceptably insulated from the supply circuit.
BIDA-CE Cable Equalizer
Stock No. 5475 (for BIDA 550 MHz) = BIDA CE-5-(*)
Stock No. 5477 (for BIDA 750 MHz) = BIDA CE-7-(*)
Stock No. 5478 (for BIDA 860 MHz) = BIDA CE-8-(*)
Stock No. 5479 (for BIDA 1000 MHz) = BIDA CE-10-(*)
Plug-in cable equalizer for increasing forward slope in BIDA
series amplifiers. The BIDA-CE pro vides attenuation that
varies inversely with frequency to correct in her ent tilt of
coaxial cable used in dis tri bu tion systems. A sheet metal
cover is mounted over the circuitry to improve stabil-
ity while preventing ac ci den tal detuning during ship ping,
handling, and in stal la tion. The BIDA-CE is available in fixed
values of 3, 6, 9, 12, 15 and 18 dB. Before inserting, remove
the factory installed "0 dB" jumper wire W2 (between J6
& J8). Loosen mounting screw and rotate Cable Equalizer
clamp clock wise. After in sert ing Cable Equalizer, rotate
Cable Equalizer clamp counter-clockwise so it lays atop the
mount ing tab. Tighten mounting screw to secure Ca ble
Equalizer clamp po si tion, (View A).
* Specify dB value.
BIDA-FA-(*) Flat Attenuator
Stock No. 5411A
Plug-in flat attenuator pad for reducing forward and/or
return gain in BIDA series amplifiers. The BIDA-FA is
avail able in fixed values of 1-20 dB in 1 dB steps. Be fore
in sert ing, remove the fac to ry installed "0 dB" jumper wire W1
(between J3 & J5) for for ward and W3 (between J14 & J16)
for return.
* Specify dB value.
Note:
The unit is shipped with 18 gauge jumpers which are not
re-installable. Do not remove jump ers except when installing option-
al equipment modules.
Accessory Identification
For future reference, it is recommended that the type and
value of the accessories installed in the BIDA be marked in
the space provided on the front panel. The full sized repro-
duction may also be copied and used for that purpose.
Accessories Installed
Forward Attenuator
____________dB
Forward Equalizer
____________dB
Return Path Attenuator
____________dB
Note: Refer to Fig.1 for reverse path information.
INPUT
TEST POINT
RETURN PATH
ATTENUATOR
RETURN PATH GAIN
PILOT LIGHT
OUTPUT
TEST POINT
FORWARD GAIN
FORWARD SLOPE
CABLE
EQUALIZER
CLAMP(*)
FORWARD ATTENUATOR
Jumper Wire
(Alternate Config.)
Pin Jack Sockets
KEY:
CABLE
EQUALIZER
VIEW A
CABLE
EQUALIZER
MOUNTING
TAB
CABLE
EQUALIZER
CLAMP(*)
MOUNTING
SCREW
(*) The clamp is part of the unit shield.
Figure 2 - Module and Control Location Diagram (Top View)
