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About this Practice:
This practice has been reissued to:
• Update Table E.
Reissued Practices: Updated and
new content can be identified by a
banner in the right margin.
Issue date: July 1998
Copyright 1998 by Dantel, Inc. • Dantel is a registered trademark of Dantel, Inc. • ISO 9001 Registered
44118 A
D
ISTRIBUTION
Table of Contents
Ordering Information ........................................................................... 2
General Description .............................................................................. 2
Circuit Description ............................................................................... 2
Installation ............................................................................................ 6
Technical Specifications ..................................................................... 21
Warranty ............................................................................................. 22
CAUTION
•
Install or remove modules from the shelf only when the power is off.
If you install a module in the shelf with the power on, the internal
circuitry may suffer damage and the product warranty will be void.
•
Remove and install circuit boards only in a static-safe environment
(use antistatic wrist straps, smocks, footwear, etc.).
•
Keep circuit boards in their antistatic bags when they are not in use.
•
Do not ship or store circuit boards near strong electrostatic, electromag-
netic, magnetic, or radioactive fields.
•
For more complete information on electrostatic discharge safety
precautions, refer to Bellcore
Printed in the U.S.A.
I
NSTALLATION
CTIVE
B
RIDGE
Technical Reference # TR-NWT-000870.
TM
& O
M
PERATION
ANUAL
44118-0798 <90-00003>
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Summary of Contents for Dantel 44118
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Page 1: Table Of Contents
For more complete information on electrostatic discharge safety precautions, refer to Bellcore Technical Reference # TR-NWT-000870. Issue date: July 1998 Copyright 1998 by Dantel, Inc. • Dantel is a registered trademark of Dantel, Inc. • ISO 9001 Registered Printed in the U.S.A. -
Page 2: Ordering Information
A combined distribution output port provides alignment and operation of a common DTMF decoder or monitor speaker. The 44118 ADB operates on -21 to -56 VDC input power. CIRCUIT DESCRIPTION ig. 1 shows the functional schematic for the 44118 Active Distribution Bridge. - Page 3 600-ohm resistor. The primary provides transient- protection diodes. The secondary side of the transformer routes the signal to the normal-through contacts of the LINE XMT jack and the output PC connector pins..CONTINUED 44118-0798 <90-00003>...
- Page 4 CIRCUIT DESCRIPTION . 1 - F , 44118 UNCTIONAL CHEMATIC COMBINED DISTRIBUTION OUTPUT COMBINED DISTRIBUTION CIRCUIT 48.7K 100K LINE TRANSMIT RECEIVE DISTRIBUTION 1 RCV 100K GAIN INPUT 1 100K HI LO -10V TRANSMIT DISTRIBUTION NETWORK 1 LINE RECEIVE CIRCUIT 1...
- Page 5 PC connector at pins 1 and 37. The test jack sets the line receive circuit gains. You can wire the output pins to a DTMF decoder for common decoding of all four input legs. Power Regulator The power regulator provides -10 and -20 VDC output power for the 44118 ADB. 44118-0798 <90-00003>...
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Page 6: Installation
Summing and Distribution Amplifier The following sections describe each application. NOTE: If the 44118 is shipped in a shelf, it is strapped according to the shelf application. If the 44118 is not shipped in a shelf, it is strapped for Four-Way/Four-Wire. - Page 7 INSTALLATION . 2 - P , 44118 B ESIGNATIONS RIDGE XMT DIST 4 XMT DIST 2 Outputs Outputs Port 1 IN XMT DIST 1 Outputs Port 2 IN XMT DIST Output 3 Combined Distribution Output (R) RCV DIST 4 -21 to -56 VDC input...
- Page 8 INSTALLATION RIDGE PPLICATION Fig. 3 shows a 44118 Active Distribution Bridge four-way/ four-wire bridge application. A signal received at port 1 appears . 3 - S TRAP OCATIONS at output ports 2, 3 and 4, but not at output port 1.
- Page 9 Transmit Port 4 0 to +7 dB 4X HI 0 to -16 dB 4X LO FOUR-WAY BRIDGE Summing Bus IN B1X, B2X, B3X, B4X Transmit Distribution Networks OUT D1H, D2H, D3H, D4H Receive Distribution Networks OUT H1R, H2R, H3R, H4R 44118-0798 <90-00003>...
- Page 10 Connect the signal generator to the LINE Read distribution level on meter. Adjust the LINE RCV PORT 1 jack (J1) on the 44118 front RCV PORT 1 level control (R7) for reading of panel. -10 dBm, or appropriate distribution level for the system, if different.
- Page 11 4. Adjust the LINE XMT PORT 4 level control (R62) for proper reading. If the desired reading cannot be reached, move the 4X gain strap to the HI or LO position as required. Calibration is complete. Remove the signal generator and dB meter. 44118-0798 <90-00003>...
- Page 12 RIDGE PPLICATION The 44118 Active Distribution Bridge eight-way/four-wire bridge application features two interwired 44118 ADBs. You can connect two independent 44020 DTMF decoders to the combined distribution outputs (pins 1 and 37) of each module. This allows split signaling routing. Receive ports on legs 1 to 4 route to DTMF Decoder #1 and receive ports on legs 5 to 8 route to DTMF Decoder #2.
- Page 13 Transmit Port 4 0 to +7 dB 4X HI 0 to -16 dB 4X LO FOUR-WAY BRIDGE Summing Bus IN B1X, B2X, B3X, B4X Transmit Distribution Networks IN D1X, D2X, D3X, D4X Receive Distribution Networks IN D1R, D2R, D3R, D4R 44118-0798 <90-00003>...
- Page 14 Connect the signal generator to the LINE Read distribution level on meter. Adjust the LINE RCV PORT 1 jack (J1) on the 44118 front RCV PORT 1 level control (R7) for reading of panel. -10 dBm, or appropriate distribution level for the system, if different.
- Page 15 With each new LINE RCV port, read the system signal generator to LINE RCV ports 2, 3, line transmit test tone level (0 dBmO) at LINE and 4 of module #1. XMT ports 1, 2, 3, and 4 of module #2..CONTINUED 44118-0798 <90-00003>...
- Page 16 Fig. 7 shows a summing and distribution application using multiple 44118 ADBs. Three interwired 44118 ADBs provide one summing port and 11 distribution ports. Refer to Fig. 3 and Table E for proper strap option installation.
- Page 17 . 7 - S UMMING AND ISTRIBUTION W ULTIPLE RIDGES Install these jumpers Install these jumpers in the unit with the in all other units. summing port. TO ADDITIONAL 44118s 44118 44118 44118 SUMMING PORT FROM ADDITIONAL 44118s 44118-0798 <90-00003>...
- Page 18 2, 3, and 4 are distribution ports and are strapped as described above. All the ports on the other modules are distribution ports and each module is strapped as follows: D1R, D1X, G1X D2R, D2X, G2X D3R, D3X, G3X D4R, D4X, G4X 44118-0798 <90-00003>...
- Page 19 Connect the signal generator to the LINE Read distribution level on meter. Adjust the LINE RCV PORT 1 jack (J1) on the 44118 front RCV PORT 1 level control (R7) for reading of panel. -10 dBm, or appropriate distribution level for the system, if different.
- Page 20 Read distribution level on meter. Adjust the LINE DIST OUTPUT jack (J9) on the front RCV PORT 1 level control (R7) for reading of panel of the next 44118 to be calibrated. -10 dBm, or appropriate distribution level for the Adjust the signal generator for the system, if different.
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Page 21: Technical Specifications
Summing Inputs -10 to 0 dBm Input Voltage Range -21 to -56 VDC Input Power Requirement 50 mA Heat Dissipation 9.55 Btu/Hr Physical Dimensions 1.4" x 6.0" x 5.6" Weight 9.5 ounces Operating Temperature Range 0° to 60° C. 44118-0798 <90-00003>... -
Page 22: Warranty
To ensure expedient processing of your order, provide a purchase order number and shipping and billing information when requesting an RMA number. Also, when the units are returned to Dantel, include a descrip- tion of the failure symptoms for each unit returned. Send defective equipment to: Dantel, Inc.
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