Patton electronics 1205RC User Manual

USER
MANUAL

MODEL 1205RC

Synchronous V.35
Modem Eliminator:
Rack Mount Card

SALES OFFICE
[phone]
TECHNICAL SUPPORT
[phone]
http://www.patton.com

Part# 07M1205RC-C
Doc# 049041U,
Rev. D
Revised 1/22/08

An ISO-9001

Certified Company

1.0 WARRANTY INFORMATION

Patton Electronics warrants all Model 1205RC 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 1205RC 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 1205RC 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 1205RC
does cause interference to radio or television reception, which can be
determined by turning the power off or removing the card, 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).In the event the user
detects intermittent or continuous product malfunction due to nearby
high power transmitting radio frequency equipment, the user is strongly
advised to take the following steps: use only data cables with an exter­nal outer shield bonded to a metal or metalized connector; and, config­ure the rear card as shown in section 3.4 of this manual.

1.2 CE NOTICE

The CE symbol on your Patton Electronics equipment indicates
that it is in compliance with the Electromagnetic Compatibility (EMC)
directive and the Low Voltage Directive (LVD) of the Union European
(EU). A Certificate of Compliance is available by contacting Technical
Support.

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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 during installation or
use of the 1205RC, contact Patton Electronics Technical Support:

[phone]; http://www.patton.com; or, [e-mail].

2.1 FEATURES

• V.35 (EIA-530) operation

• Synchronous data rates from 32 to 144 Kbps

• Host-to-host distances up to 300 feet

• Internal or external clocking

• All necessary data, clocking and control signals supported

• Constant or RTS controlled carrier selections

• RTS-CTS delay options of 0mS, 7mS or 53mS

• Front panel LEDs show TD, DTR and CD activity for each port

• Two UD-26 connectors on rear interface card

• Switchable 120V or 240V power supply

• Mounts in Patton’s 16-slot rack chassis and 2/4/8-slot Cluster
Boxes

• Made in the U.S.A.

2.2 DESCRIPTION

The Patton Model 1205RC synchronous modem eliminator

rack card lets two synchronous hosts communicate with each other in

the same room for a fraction of the cost of a pair of high speed
modems. Supporting synchronous data rates of 32, 48, 56, 64, 72,
112, 128 and 144 Kbps, the Model 1205RC can be configured to emu­late dial-up or leased line service. Maximum distance between the
connected hosts is 300 feet. Timing can be set for internal or external
clock, and all necessary data, clocking and control signals are support­ed.

The Model 1205RC is designed to mount in Patton’s 2U high, 16-

slot rack chassis, as well as Patton’s 2/4/8-slot desktop Cluster Boxes.
This rack chassis and cluster boxes feature a switchable 120/240 VAC
power supply (optional 48 VDC) and hot swappable function/interface
cards mounted in a mid-plane architecture. Front panel LEDs show
TD, DTR and CD activity for both ports, as well as power. The rear
interface card has two UD-26 connectors for patching to the host
devices.

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S1 through S3: Data Rate Setting

Switches S1 through S3 are set in combination to determine the

synchronous data rate for the Model 1205RC. Switch S4 is not active.

S1

S2 S3 S4 Setting
Off Off Off N/A 32 kbps
On Off Off N/A 48 kbps
Off On Off N/A 56 kbps
On On Off N/A 64 kbps
Off Off On N/A 72 kbps
On Off On N/A 112 kbps
Off On On N/A 128 kbps
On On On N/A 144 kbps

3.3 FUNCTION CARD JUMPERS

The Model 1205RC has two ports (Port A and Port B), and each
must be configured independently. Therefore, every function (such as
clocking) has two

jumpers associated with it. As Figure 3 (below)
shows, each jumper has three possible positions: strap covering posts
1 & 2, strap covering posts 2 & 3, or strap removed altogether. The
detailed description for each jumper presents all valid strap positions.

5

Figure 2. Model 1205RC DIP switch orientation on internal daughterboard.

On

4
3
2
1

Top of Card

Figure 3. Possible function card strap positions

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Front of Card

123

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