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Model 10401200
January 2014
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Prac_10401200_RevA.pdf
CONTENTS:
Section 1. General
1
Section 2. Features
1
Section 3. Application
1
Section 4. Installation
2
Section 5. Options
2
Section 6. Circuit Description
2
Section 7. Mechanical Outline
3
Section 8. Specifications
3
Section 9. Testing and Troubleshooting
3
Section 10. Maintenance
3
Section 11. Warranty
3
Figure 1. Typical Application
1
Figure 2. Circuit Description
4
Figure 3. Mechanical Outline
4
Figure 4. External Connections Layout
5
Figure 5. Testing Guide Checklist
5
1. GENERAL
1.01
This practice provides application, specification, circuit and mechanical
description, maintenance, installation, and warranty information relating to
Accurate Electronics’ 4-wire 6-way Conference Bridge, Model 10401200.
2. FEATURES
Designed for voice conference applications for full 6-way
bridging of 4-wire transmission facilities.
Can be used with voice (VF) or data up to 9.6 kbps.
Zero dB loss bridge, with an adjustable gain of - 10 to + 22dB
(receive-to-transmit).
Selectable 7 dB (receive) and -16 dB (transmit) pads for each
bridge port, which allows proper interfacing with carrier
facilities.
Front-panel-mounted RX and TX calibration Bantam jacks, for
simplified alignment.
SX leads for each transmit and receive port.
Can be powered from - 48 VDC. (-22 TO -56 VDC)
3. APPLICATION
3.01
Model 10401200 is a 4-wire 6-way Active Conference Bridge. A voice
(VF) or data signal received at any receive port is transmitted to all other
transmit ports (minus the associated transmit port), providing leg to leg
communication. Front-panel-mounted transmit and receive gain adjustments
are provided for each bridge port. Proper adjustment allows all signals on the
bridge to be transmitted and received at the same level.
3.02
Model 10401200 mounts in one module mounting position of a Type 10
or 400 Relay Rack Shelf. They make electrical connection to the system via
a 56-pin, wire-wrapped, card-edge connector, provided as part of the shelf
mounting assembly.
3.03
The Model 10401200provides jumper selected insertion loss of -7dB in
each receive port and -16dB in each transmit port to facilitate interfacing with
carrier channel or other standard level 4wire interface (+7dB receive, -16dB
transmit). When lossless bridging is required, the 0dB jumper positions may
be selected.
3.04
Terminating impedance at both the input and output ports of the bridge
is 600 ohms, balanced. The modules’ active circuitry allows unused ports to
be left unterminated without affecting transmission performance of the ports
in use.
3.05
The bridge module incorporates an internally regulated power supply
that permits operation on -22 to -56 VDC input. Current requirement is 60mA
when powered from a nominal -48VDC power source. Reverse-battery
protection is provided in the modules’ internal power supply circuits.
Figure 1
. Typical Application.
ACCURATE ELECTRONICS INC
PO BOX 1654 97075-1654 8687 SW HALL BLVD 97008 BEAVERTON OR USA 503.641.0118 FAX 503.646.3903
WWW.ACCURATE.ORG
Practice Section 10401200 Rev A
4-WIRE 6-WAY ACTIVE CONFERENCE BRIDGE
MODEL 1040120000
