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AGE

49013-1297 <90-00034>

ORDERING INFORMATION

NOTE: This section lists the different options available for this product. To order any of the avail-

able options, contact Dantel Inside Sales through our toll-free number, 1-800-432-6835.

OPTION NUMBER

FEATURES

B12-49013-00

202 Tone Modem Subassembly

GENERAL DESCRIPTION

he Dantel 49013 202 Tone Modem Subassembly is used in

support of Dantel’s 460 Alarm and Control System. It con-

verts digital data into frequency shifted tones and enters it into
a data transmission system.

It also receives frequency shifted tones from a transmission
system and converts them into digital data. It operates as a Bell
202 full-duplex modem at a data rate of 1200 baud.

CIRCUIT DESCRIPTION

he 49013 202 Tone Modem Subassembly functional sche-

matic is shown in Fig. 1. The subassembly consists of:

♦

Transmit (TX) transformer

♦

Receive (RX) transformer

♦

Signal level pads

♦

Input/output buffers

♦

An FSK modem IC

♦

A Microcontroller 87C51

♦

A frequency control crystal

♦

Front panel test switch

♦

An LED driver

♦

Input power protection

UPDATED

Содержание 49013

Страница 1: ...cal Reference TR NWT 000870 Copyright 1997 by Dantel Inc Dantel is a registered trademark of Dantel Inc ISO 9001 Registered Printed in the U S A INSTALLATION OPERATION MANUAL 49013 1297 90 00034 49013 202 TONE MODEM SUBASSEMBLY About this Practice This practice has been reissued to Incorporate the Checkout Proce dure into the Installation section Document change to B12 version Add microcontroller ...

Страница 2: ... verts digital data into frequency shifted tones and enters it into a data transmission system It also receives frequency shifted tones from a transmission system and converts them into digital data It operates as a Bell 202 full duplex modem at a data rate of 1200 baud CIRCUIT DESCRIPTION The 49013 202 Tone Modem Subassembly functional sche matic is shown in Fig 1 The subassembly consists of Tran...

Страница 3: ...0 dB and the coupling transformer To adjust the output signal level from 1 to 40 dBm use the potentiometer XMT LVL R9 on the front panel Monitor the output signal at the front panel through the XMT test points FSK Modem IC This integrated circuit is the central component of the 49013 subassembly It handles all data functions such as modulation demodulation and filtering Internal clocking is contro...

Страница 4: ...t I Analog To From Functional Schematic Part II REG 5 VDC RCV RCV XMT XMT XMT PAD OUT OUT I N I N XMT MAS SLA SLA RCV PAD OUT OUT I N I N Functional Schematic Part II Digital To From Functional Schematic Part I U1 5V CD 5V 5V GND 1 3 4 6 9 7 12 10 2 5 8 11 S2 P5 6 P5 7 P5 8 P5 12 P5 10 TXD 00 RXD 01 RTS 00 CD 01 RXD 00 TXD 01 CD 00 RTS 01 DSR CTS P5 11 DTR A P5 9 P4 3 P5 1 TEST S1 01 00 U2 FIG 1 F...

Страница 5: ...CV PAD RCV Pad IN input level between 0 and 20 dBm RCV Pad OUT input level between 20 and 40 dBm XMT PAD XMT Pad IN output adjustable from 20 to 40 dBm XMT Pad OUT output adjustable from 1 to 20 dBm INSTALL STRAP XMT MAS and RCV MAS XMT SLA and RCV SLA XMT and RCV open no straps Jumpers parallel to P5 See Fig 2 Jumpers perpendicular to P5 See Fig 2 Jumpers parallel to P5 See Fig 2 Jumpers perpendi...

Страница 6: ... the connectors on the host module see Fig 2 Make sure each connector pin goes straight into the socket Make sure the subassembly fits tightly on the standoffs and the front panel is straight in the host module s front panel opening Replace the three screws in the standoffs INSTALLATION CONTINUED J4 P4 J5 P5 DIST RCV 5 VDC DIST XMT 2 3 4 S2 UP NORMAL 49013 00 TONE MODEM SUBASSEMBLY HOST MODULE 1 2...

Страница 7: ...should be 0 to 40 dBm depending on the application There is no field adjustment for this circuit Master Slave Mode When using the 49013 subassemblies in the Master Slave mode of operation use the following procedure to align the XMT levels Refer to Fig 4 1 Set the 600 ohm dB meter for bridging and connect the meter to the XMT jacks of the 49013 subassembly that is operating as the master location ...

Страница 8: ...y and set the same level as the master will magnify and distort the signal above a maximum level of 1 dB FIG 4 49013 MODEMS IN MASTER SLAVE OPERATION UPDATED LOCATION 1 46010 MULTIPLE ALARM TRANSMITTER 49013 00 202 MODEM MASTER P4 2 P4 4 53 54 55 56 36 RCV 18 XMT 600 OHM BALANCED OUTPUT 600 OHM BALANCED INPUT 16 ALARM POINT INPUTS 202 TONES LOCATION 2 LOCATION 3 46010 MULTIPLE ALARM TRANSMITTER 49...

Страница 9: ... the front panel of the 49013 indicates that received data carrier is active DESCRIPTION Input Voltage Nominal Current Add to host module s specs Heat Dissipation Add to host module s specs Data Rate Input Level Range Output Level Range Operating Frequencies Mark Space Operating Temperature Range Physical Dimensions Weight VALUE 12 and 5 VDC from host module 11 mA 24 VDC 6 mA 48 VDC 0 99 Btu Hr 24...

Страница 10: ...en instrument signed by a duly authorized officer of the Seller and accepted by the Buyer Warranty and remedies on products not manufactured by the Seller are in accordance with warranty of the respective manufacturer THE SELLER MAKES NO OTHER WARRANTY OF ANY KIND WHATSOEVER EXPRESSED OR IMPLIED AND ALL IMPLIED WARRANTY OF FITNESS FOR A PARTICULAR PUR POSE WHICH EXCEEDS THE AFORESAID OBLIGATIONS I...

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