Patton electronics 1004, 1004S User Manual

USER
MANUAL

SALES OFFICE
[phone]
TECHNICAL SUPPORT
[phone]

Part# 07M1004-C
Doc# 047011UC
Revised 8/10/95

MODEL 1004
and 1004S

High Speed,
Multipoint Short
Range Modem

1.0 WARRANTY INFORMATION

Patton Electronics warrants all Model 1004 components to be
free from defects, and will—at our option—repair or replace the prod­uct should it fail within one year from the first date of shipment.

This warranty is limited to defects in workmanship or materials,
and does not cover customer damage, abuse or unauthorized modifi­cation. If this product fails or does not perform as warranted, your sole
recourse shall be repair or replacement as described above. Under no
condition shall Patton Electronics be liable for any damages incurred
by the use of this product. These damages include, but are not limited
to, the following: lost profits, lost savings and incidental or consequen­tial damages arising from the use of or inability to use this product.
Patton Electronics specifically disclaims all other warranties,
expressed or implied, and the installation or use of this product shall
be deemed an acceptance of these terms by the user.

1.1 RADIO AND TV INTERFERENCE

The Model 1004 generates and uses radio frequency energy, and
if not installed and used properly—that is, in strict accordance with the
manufacturer's instructions—may cause interference to radio and tele­vision reception. The Model 1004 has been tested and found to com­ply with the limits for a Class A computing device in accordance with
the specifications in Subpart J of Part 15 of FCC rules, which are
designed to provide reasonable protection from such interference in a
commercial installation. However, there is no guarantee that interfer­ence will not occur in a particular installation. If the Model 1004 does
cause interference to radio or television reception, which can be deter­mined by disconnecting the RS-232 interface, the user is encouraged
to try to correct the interference by one or more of the following meas­ures: moving the computing equipment away from the receiver, re-ori­enting the receiving antenna and/or plugging the receiving equipment
into a different AC outlet (such that the computing equipment and
receiver are on different branches).

1.2 SERVICE

All warranty and non-warranty repairs must be returned freight
prepaid and insured to Patton Electronics. All returns must have a
Return Materials Authorization number on the outside of the shipping
container. This number may be obtained from Patton Electronics
Technical Service at [phone].

Packages received without an

RMA number will not be accepted.

Patton Electronics' technical staff is also available to answer any
questions that might arise concerning the installation or use of your
Model 1004. Technical Service hours: 8AM to 5PM EST, Monday

through Friday.

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2.0 GENERAL INFORMATION

Thank you for your purchase of this Patton Electronics product.
This product has been thoroughly inspected and tested and is warrant­ed for One Year parts and labor. If any questions or problems arise
during installation or use of this product, please do not hesitate to con­tact Patton Electronics Technical Support at [phone].

2.1 FEATURES

• Operates asynchronously, point to point or multipoint

• Up to 50 multipoint device drops in a polling environment

• Data rates to 115.2 Kbps

• Passes transmit & receive data, one control signal each direction

• DCE/DTE switch selectable on RS-232 interface

• No AC power or batteries are required

• Variable high/low impedancesettings

• Carrier can be set as “constantly on” or “controlled by RTS”

2.2 DESCRIPTION

The Model 1004 High Speed, Multipoint Short Range Modem

provides exceptional versatility in a compact package. Requiring no
AC power or batteries for operation, the Model 1004 supports asyn­chronous RS-232 data rates to 115.2 Kbps over one or two uncondi­tioned twisted pair. Distances up to 9.4 miles are attainable at lower
data rates (19.2 Kbps, 19 AWG twisted pair).

The Model 1004 can handle up to 50 terminal drops in a multipoint
polling environment. For RS-485 and serial printer applications requir­ing hardware handshaking, the Model 1004 passes one control signal
in each direction. The Model 1004 may be configured for high or low
impedance operation, and carrier may be set to “constantly on” or
“controlled by RTS”.

Options for twisted pair connection include terminal blocks with
strain relief, RJ-11, RJ-45 and dual modular connectors for daisy chain­ing. The surge protected Model 1004S incorporates Silicon Avalanche
Diodes which provide 600 watts per wire of protection against harmful
data line transient surges.

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3.0 CONFIGURATION

The Model 1004 is configured using six PC board mounted switch­es. Figure 1 shows the switch locations, along with the location of the
terminal blocks and optional surge protectors:

3.1 SETTING THE DCE/DTE SWITCH

For your convenience, the Model 1004 has an externally accessi­ble DCE/DTE switch (Figure 2). If the device connected to the Model
1004 is a modem or multiplexer (or is wired like one), set the switch to
“DTE”. This setting causes the Model 1004 to behave like Data
Terminal Equipment and transmit data on pin 2.

If the device connected to the Model 1004 is a PC, terminal or
host computer (or is wired like one), set the switch to “DCE”. This set­ting causes the Model 1004 to behave like Data Communications
Equipment and transmit data on pin 3.

3

DCE DTE

DCE/DTE

Switch

2-Wire/4-Wire

Switch

Surge
Suppressors
(1004S only)

Terminal

Block

Control

Switches

Figure 1. Model 1004 board, showing switch locations

Figure 2. Close up of the external DCE/DTE switch

3.2 ACCESSING THE CONFIGURATION SWITCHES

The five switches shown in Figure 3 configure the Model 1004 for
RTS/CTS delay, echo, method of carrier control, impedance and
2-wire/4-wire operation. These switches are located

internally

on the
Model 1004's PC board. To access switch set 1 (SW1) and switch set
2 (SW2), use a small flat blade screwdriver to pop open the Model
1004's case as shown in Figure 4.

4

“ON”

“OFF”

SW2SW1

Figure 3. Close up of switches SW1 and SW2 on the PC board

Figure 4. Opening the Model 1004's plastic case with a small screwdriver

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