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About this Practice:
This practice has been reissued to:
• Replace modem alignment
procedure and Table C, in Installa-
tion section, with new procedure.
Reissued Practices: Updated
and new content can be identified
by a banner in the right margin.
Issue date: August 1998
Copyright 1998 by Dantel, Inc. • Dantel is a registered trademark of Dantel, Inc. • ISO 9001 Registered
202 C
Table of Contents
Ordering Information ............................................................................ 2
General Description ............................................................................... 2
Circuit Description ................................................................................ 2
Application Information ......................................................................... 5
Installation ............................................................................................ 6
Operation ............................................................................................. 12
Technical Specifications ....................................................................... 14
Warranty ............................................................................................. 16
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
44202
OMPATIBLE
M
ODEM
44202-00
202 MODEM
TD
RD
RTS
CD
DTR
CTS
ON
TEST
ON
ABL
ON
DLB
LINE
XMT
MON
4W
LINE
2W
MON
XMT
LEVEL
RCV
RCV
GND
A11-44202-00 REV__
Technical Reference # TR-NWT-000870.
TM
& O
M
PERATION
ANUAL
44202-0898 <90-00004>
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Related Manuals for Dantel 44202
Summary of Contents for Dantel 44202
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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: August 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
♦ Switches. ♦ Test points. ♦ Level setting potentiometers. The are no options for the 44202 and it is not equipped to accept subassemblies. CIRCUIT DESCRIPTION The 44202’s functional schematic is shown is Fig. 1. The circuit consists of: ♦... - Page 3 CIRCUIT DESCRIPTION . 1 - F , 44202 M UNCTIONAL CHEMATIC ODEM 44202-0898 <90-00004>...
- Page 4 20dB High/Low gain straps. Front panel test points are provided for setting the receive level. The transmit level is adjustable using the front panel monitoring jack. 44202-0898 <90-00004>...
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Page 5: Application Information
CCITT V.21 (2- or 4-wire) Example Application Refer to Fig. 2. This application has one 44202 modem at a remote location being used to transmit 460 Alarm and Control System data to a 49013 202 Modem subassembly at a central data process- ing location. -
Page 6: Installation
APPLICATION INFORMATION . 2 - E , 44202 M XAMPLE PPLICATION ODEM Central Location Remote Location 46022-20 44202 46028 46020 Multiple Control Multiple Alarm Compatible Point 16 Control Alarm Combiner Modem Module Point Outputs Processor 49008 49013 RS-485 Subass’y Tone... - Page 7 INSTALLATION . 3 - S , 44202 M TRAP AND WITCH OCATIONS ODEM SLAVE MASTER SLAVE MASTER RCV GAIN XMT GAIN HIGH HIGH A - S , 44202 M ABLE TRAP PTIONS ODEM STRAP POSITION DESCRIPTION TD422 No termination at 422 Transmit Data input.
- Page 8 INSTALLATION B - S , 44202 M ABLE WITCH ETTINGS ODEM SWITCH POSITION DESCRIPTION 2W/4W Selects 2-wire operation Selects 4-wire operation RTS TEST Turns on RTS and DTR. Carrier is transmitted. (Switch on front panel) DOWN Disables TEST functions. NOTE: When RTS TEST switch is ON, RTS and DTR LEDs on front panel are ON.
- Page 9 In most cases, the 56-pin edge connector is prewired at the factory. If custom wiring is required, refer to Fig. 4 for module edge connector pin designations, or contact Dantel. Wire the connector in the shelf or housing as required.
- Page 10 Checkout Checkout of the 44202 202 Compatible Modem is done by setting the transmit and receive levels and testing the analog and digital circuit sides using the digital and analog loopback functions. Refer to Fig.
- Page 11 Action: Connect the TMS, set for bridged reading, or a dB meter, to the test points labeled “RCV” and “GND”. Send the engineered data level (13dB below tone level) into the 44202 modem from an available test point. (RCV Line, DST, CXR jack, etc.) Result: The “CD”...
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Page 12: Operation
OFF and ON for level setting and testing as de- . 5 - F RONT ANEL scribed in the Installation section. While the 44202 is being used for normal data transmission, there are no user operations to be performed. 44202-00... - Page 13 ♦ They provide a means of adjusting the receive level at the modem IC. The other potentiometer is labeled XMT LEVEL, and is used to set the transmit level at the XMT LINE jacks on the front panel. 44202-0898 <90-00004>...
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Page 14: Technical Specifications
54 ohms ALB AND DLB INPUTS Operating Voltage 0 to 1 V Disable Voltage 3.4 to 5 V or open PHYSICAL FEATURES Weight 9 ounces Dimensions 1.4" x 6.0" x 5.6" Operating Temperature Range 0° to 55° C. 44202-0898 <90-00004>... - Page 15 NOTES 44202-0898 <90-00004>...
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Page 16: Warranty
2. Signal levels 3. Software configuration 4. Connections between Dantel’s equipment and your equipment. If there is still a problem, substitute equipment that is known to be good. For additional assistance, call Dantel’s Technical Field Service Department weekdays, 6 . to 5 .