Dantel 49213 User manual

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 BellcoreTM Technical 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
49213-1297<90-00094>
49213 202 MODEM
SUBASSEMBLY
About this Practice:
This practice has been reissued to:
• Meet ISO 9001 requirements.
Issue date: December 1997
Reissued Practices: Updated and
new content can be identified by a
banner in the right margin.
UPDATED
Table of Contents
Ordering Information ........................................................................... 2
General Description.............................................................................. 2
Circuit Description ............................................................................... 2
Installation............................................................................................ 4
Operation .............................................................................................. 6
Technical Specifications ....................................................................... 7
Warranty ............................................................................................... 8

PAGE 2 49213-1297<90-00094>
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
B12-49213-00 Smart Block 202 Modem
GENERAL DESCRIPTION
The Dantel 49213 202 Modem Subassembly (49213 Modem) converts digital data into frequency shifted tones and enters
the data into a data transmission system. Conversely, the 49213
Modem receives frequency shifted tones for a transmission
system and converts the tones into digital data.
The 49213 Modem operates as a Bell 202 full-duplex modem
with a data rate of 1200 baud.
NOTE: The 49213 Modem is used exclusively with Dantels 46210
Alarm Block (46210 AB) or 46220 Alarm and Control Block
(46210 ACB).
CIRCUIT DESCRIPTION
Fig. 1 shows the 49213 202 Modem Subassembly functional schematic.
Subassembly input tones (RXD) appear at pins 3 and 4 of
connector P10. The tones couple to the subassembly through a
600:600 ohm transformer. The signal applies to the modem
integrated circuit chip, which controls the receive (RXD), clear to
send (CTS) and data carrier detect (DCD) to the 46210 AB or
46220 ACB.
The integrated circuit (IC) chip receives 46210 AB or 46220 ACB
transmit (TXD) and request to send (RTS) signals. The IC chip
sends tones through a 600:600 ohm transformer to the transmit
(TXD) output at pins 1 and 2 of connector P10. You can adjust
the tone level with strap X1 and potentiometer R8.
A test switch (S1) grounds the RTS lead which turns on the
opposing (distant end) modem DCD and causes data carrier
transmission. Each modem verifies the presence of the data
carrier, which allows level adjustment without the presence of
data. Shorting pins 7 and 8 of connector P10 also activates the

49213-1297<90-00094> PAGE 3
data carrier. You can physically short the pins by interconnect-
ing column 32 pins R and S of the 46210 AB or 46220 ACB wire-
wrap terminal.
FIG. 1 - FUNCTIONAL SCHEMATIC, 49213
CIRCUIT DESCRIPTION
P8-3
P8-10
P8-1
P8-2
P8-9
P8-12
P8-4
P8-7
P8-11
P8-5
P8-8
P10-7
P10-8
P9-2
P9-3
P9-4
DCD
CTS
RXD
TXD
RTS
-5 VDC
+5 VDC
GND
P10-4
P10-3
RXD
P10-1
P10-2
CRYSTAL
TXD
51
2
X1
3
4
Modem
IC
NORM
TEST
S1
+5VDC

PAGE 4 49213-1297<90-00094>
INSTALLATION
Installation consists of removing the existing subassembly, connecting the 49213 202 Modem Subassembly, and setting
the straps.
1. Install the subassembly.
Refer to Figs. 2, 3 and 4. Open the 46210 AB or 46220 ACB and
remove the existing subassembly. There is one screw for a
bypass subassembly and four screws for a 202 modem or an
RS-232 subassembly. Carefully mate the connectors on the
subassembly with the 46210 AB or 46220 ACB connectors. Make
sure the pins go straight into the sockets. Reinstall the screws.
2. Set the straps.
Refer to Fig. 5. Set the X1 straps. With the straps placed across
pins 2-3 and 4-5, you can adjust the transmit output with
potentiometer R8 between -1 and -20 dBm. With the straps
placed across pins 1-2 and 3-4, you can adjust the transmit
output with potentiometer R8 between -20 and -40 dBm.
NOTE: There is no receive level adjustment.
FIG. 2 - OPENING THE 46210/46220
462xx-xx REV ____
WARNING:
REMOVE fuse
beforeremoving
or inserting module
Use wrist strap
ESD SENSITIVE DEVICE
POWER
ALARM
uP LED
MSTR AUX
GREEN = RCV
RED = XMT
Front View
Place Thumb
Here
Side View

49213-1297<90-00094> PAGE 5
FIG. 3 - PULLING DOWN THE POWER SUPPLY AND CPU BOARDS
FIG. 4 - SUBASSEMBLY LOCATION ON POWER SUPPLY BOARD
F1 TB1 P1 S1
S2 S3
AUX LED
13
-48
ALM
GND
RS-232 OR 202
SUBASSEMBLY
INSTALLATION

PAGE 6 49213-1297<90-00094>
FIG. 5 - SWITCH AND STRAP LOCATIONS, 49213
X1
1
S1
R8
S1
Test
Component Side
Solder Side
Normal
PC Board
INSTALLATION
OPERATION
The 49213 202 Modem Subassembly begins operating when you apply power to the 46210 AB or 46220 ACB.
To check operation:
1. Connect the modem to another modem at the other end of the com-
munications line.
2. Remove the 46210 AB or 46220 ACB plastic cover. Refer to Fig. 6.
3. Connect a 600-ohm dB meter (bridged) to pins J and K (XMT) of
wire-wrap terminal column 32. The dB meter should not be termi-
nated with 600 ohms.
4. Open the 46210 AB or 46220 ACB. Refer to Figs. 2 and 3.
5. Place S1 in the TEST position (up toward the component side of the
subassembly) which activates the opposing (distant end) modems
carrier detect. Refer to Fig. 5.
6. Adjust the transmit level with potentiometer R8. (The amount of
adjustment depends on the strapping of X1.)
NOTE: There is no receive level adjustment.
7. When you finish adjusting the transmit level, return S1 to NORM
(down toward the solder side of the subassembly) and remove the
dB meter.
CONTINUED . . .

49213-1297<90-00094> PAGE 7
Side
View
Closed
To open front panel
for access to wire
wrap pins, lift up
on the tabs on the front
panel. The panel
will swing forward.
Side
View
Open
462xx-xx REV ____
WARNING:
REMOVE fuse
beforeremoving
orinsertingmodule
Usewriststrap
ESD SENSITIVE DEVICE
POWER
ALARM
uP LED
MSTR AUX
GREEN = RCV
RED = XMT
Front View
NOTE: Check the transmit level without making adjustments by
shorting pins R and S of column 32.
FIG. 6 - OPENING PLASTIC COVER
INSTALLATION
TECHNICAL SPECIFICATIONS
DESCRIPTION
Input Voltage
Max. Input Current
+5 VDC
-5 VDC
Max. Heat Dissipation
+5 VDC
-5 VDC
Data Rate
Transmit Output Level Range
Receiver Sensitivity with
Frequency Deviation +16 Hz
Operating Frequencies
Mark
Space
Temperature Range
Physical Dimensions
Weight
DESCRIPTION
+5 VDC and -5VDC (from host)
150 mA
30 mA
2.6 Btu/Hr
0.5 Btu/Hr
Up to 1200 Baud
-1 to -20 dBm/-20 to -40 dBm (600 ohms)
+1 dBm to -47 dBm
1200 Hz
2200 Hz
0° to 55° C.
3.2" x 2.0" x 0.5"
1.5 ounces

PAGE 8
8 PAGES 49213-1297<90-00094>
LIMITED WARRANTY
The Seller warrants that the standard hardware products sold will be free from defects in material and
workmanship and perform to the Sellers applicable published specifications for a period of 18 months for
hardware, and 3 months for software, from the date of the original invoice. The liability of the Seller hereunder
shall be limited to replacing or repairing, at its option, any defective products which are returned F.O.B. to the
Sellers plant, (or, at the Sellers option, refunding the purchase price of such products). In no case are products
to be returned without first obtaining permission and a customer return authorization number from the Seller.
In no event shall the Seller be liable for any consequential or incidental damages.
Equipment or parts which have been subject to abuse, misuse, accident, alteration, neglect, unauthorized
repair or installation are not covered by warranty. The Seller shall make the final determination as to the
existence and cause of any alleged defect. No warranty is made with respect to custom equipment or products
produced to the Buyers specifications except as specifically stated in writing by the Seller in the contract for
such custom equipment.
This warranty is the only warranty made by the Seller with respect to the goods delivered hereunder, and may
be modified or amended only by a written 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 IS HEREBY DISCLAIMED BY THE SELLER.
INCASE OF DIFFICULTY
If you experience difficulty with this equipment, check the following, as appropriate:
1. Switch settings
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 A.M. to 5 P.M. pacific time:
1-800-4DANTEL (1-800-432-6835).
If a thorough checkout shows a piece of equipment has malfunctioned, you may return it to the factory. For
repairs and emergency replacements, obtain a Return Material Authorization (RMA) number from the Cus-
tomer Service Representative at 1-800-4DANTEL (1-800-432-6835).
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. • 2991 North Argyle Avenue • Fresno, California 93727-1388
P.O. Box 55013 • Fresno, CA 93747-5013 Phone [phone] Fax [phone] http://www.dantel.com
WARRANTY