Patton 222NRC User Manual

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USER MANUAL

MODEL 222NRC

Miniature RS-232 to RS-422 Converter: Rack Mount Card

Part# 07M222NRC-B Doc# 052021UB Revised 4/30/96

SALES OFFICE (301) 975-1000 TECHNICAL SUPPORT (301) 975-1007

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1.0 WARRANTY INFORMATION

Patton Electronics warrants all Model 222NRC 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 222NRC 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 222NRC 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 222NRC does cause interference to radio or television reception, which can be determined by turning the power off or disconnecting the RS-232 interface, the user is encouraged to try to correct the interference by one 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 (301) 975-1007.

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 222NRC. Technical Service hours: 8AM to 5PM EST, Monday

through Friday.

In the event that 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:

1) Use only data cables with an external outer shield bonded to a

metal or metalized connector, and...

2) Configure the rear card as shown in Section 3.3.1 in this

manual.

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2.0 GENERAL INFORMATION

3.0 CONFIGURATION

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 (301) 975-1007.

2.1 FEATURES

• Convenient rack card features two interface converters

• Data rates to 19.2 Kbps over two twisted pair

• RTS and CTS are looped on the RS-232 interface

• Bidirectional conversion between unbalanced RS-232 and balanced RS-422 interfaces

• Carrier detect LEDs can be customized

• Silicone Avalanche Diode surge protection

• Fits conveniently in Patton’s rack chassis

• Made in USA

2.2 DESCRIPTION

The Model 222NRC Interface Converter Rack Card is a dual

rack card incorporating two converters. The converters let computers, terminals and modems using the RS-232 interface communicate with devices using RS-422 balanced electrical signals. Both units operate full duplex at data rates to 19.2 Kbps over 2 twisted pairs. The Model 222NRC features 13 easy-to-read front panel LEDs, which monitor the status of data transmission. As an added feature, a set of easily accessible configuration straps allows the user to control the function of the carrier detect LEDs.

The Model 222NRC uses the latest surface mount technology to attain high quality short range modem performance in a convenient rack card. Filling one function card slot on Patton’s R16P rack chassis, two Model 222NRCs are available with RJ-11 or RJ-45 rear interface cards. For workgroup and desktop communications, the Model 222NRC also fits in Patton’s 2, 4 and 8 slot Cluster Boxes. The combination of rack mount, Cluster Box and interface powered units provides a completely integrated “networking” solution.

This section describes the location and orientation of the Model 222NRC's configuration jumpers, provides detailed instructions on setting each jumper, and describes the settings for each of the rear connection cards.

The Model 222NRC uses two jumpers that allow configuration to a wide range of asynchronous applications. These jumpers are accessible when the card is slid out of the rack chassis (see Figure 1, below). Once the hardware is configured, the Model 222NRC is designed to operate transparently, without need for frequent reconfiguration: just set it and forget it!

JP1-A

1 2 3

Normal

1 2 3

Normal

JP1-B

Figure 1. Model 222NRC card, showing location of configuration jumpers

3.1 JUMPER LOCATIONS AND ORIENTATION

The configuration jumpers on the Model 222NRC board and the rear interface card allow you to configure the function of both front panel “Carrier Detect” LEDs, as well as the rear interface card CD signal. Figure 2 (below) shows the orientation of these jumpers. Notice that each jumper can either be on pegs 1 and 2, or on pegs 2 and 3. Note: Pin 1 is always located on the top or left side of the jumper set.

123 123 123

Figure 2. Orientation of interface card straps

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3.2 SETTING THE CONFIGURATION STRAPS

3.3.1 REAR CARD STRAP SETTINGS

The Model 222NRC contains two sets of configuration jumpers, which allow you to set the function of both front panel “Carrier Detect” LEDs and the CD signal exiting the rear interface card in the rack. Since the Model 222NRC contains two converters, each unit can be configured separately.

Both “Carrier Detect” straps can be set to “Normal” or “Always on”. When operating normally, the “CD” LED will blink to indicate the presence or absence of the carrier. When set to “Always on”, the “CD” LED will always indicate that the carrier is “ON”. Figure 3 (below) summarizes the switch settings. The default position is “Always ON”.

INTERFACE CARD JUMPER SUMMARY TABLE #1

Jumper Function Position 1&2 Position 2&3

JP1-A Carrier Detect - Unit A Always ON* Normal JP1-B Carrier Detect - Unit B Always ON* Normal

Figure 3. Summary of jumper settings, *indicates factory default

3.3 REAR CARD CONFIGURATION

The 222NRC has two interface card options: the 1Q11 (which comes equipped with two RJ-11 ports and two RJ-45 ports) and the 1Q45 (which comes equipped with four RJ-45 ports). Figure 4 illustrates these two different rear interface options.

1Q11

RJ-11/6

RJ-45/10

Figure 4. Model 222NRC rear interface card options

1Q45

RJ-45/10

Prior to installation, you should examine the rear card you have selected and ensure that it is configured for your application. Each rear card is configured by setting straps on the PC board. Sections 3.3.1 and 3.3.2 describe strap locations and settings for each card.

Figure 5 shows the strap locations for the 1Q11 and the 1Q45 rear cards. These straps determine various grounding characteristics for the RS-232 and twisted pair lines.

1 2

JB2

JB4

1 2 3

JB6 JB7

123

JB5

Figure 5. Strap locations for both rear cards

2 3

(Unit A)

(Unit B)

(Unit A)

(Unit B)

Converter

twisted pair

}

Terminal

}

Figure 6 provides a summary of strap functions for both of the rear

cards. The next page describes each strap's function.

INTERFACE CARD STRAP SUMMARY TABLE #1

Strap Position 1&2 Position 2&3

JB2 Line A Shield No Shield JB4 Line B Shield No Shield JB5 SGND & FRGND* Open (Not Connected) JB6 Unit A DSR JB7 Unit B DSR

Figure 6. Summary of strap settings, †indicates factory default

†

*via 100 ohm resistor

†

N/A N/A

Line A Shield & Line B Shield (JB2 & JB4)

This strap pertains to the line interface. In position 1&2, the strap links RJ-11 pins 1 and 6 (RJ-45 pins 2 and 7) to frame ground and the rear panel. These pins can be used as connections for the twisted pair cable shield. In position 2&3, pins 1 and 6 (or 2 and 7) are disconnected from frame ground.

(continued)

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JB2 Position 1&2 = Line A Shield Connected to Frame Ground Position 2&3 = No Shield

JB4 Position 1&2 = Line B Shield Connected to Frame Ground Position 2&3 = No Shield

4.0 INSTALLATION

This section describes the functions of the Model 222NR16P rack chassis, tells how to install front and rear Model 222NRC cards into the chassis and provides diagrams for wiring up the interface connections correctly.

4.1 THE MODEL 222NR16P RACK CHASSIS

SGND & FRGND (JB5)

In position 1&2, this strap links signal ground and frame ground through a 100 Ohm, 1/2 W resistor. In position 2&3, pin 1 is “not connected to frame ground.

JB5 Position 1&2 = SGND and FRGND Connected Position 2&3 = SGND and FRGND Not Connected

DTE as DSR or RI (JB6 & JB7)

Because the Model 222NRC uses DSR (but not RI), only position 1&2 is valid when this rear card is used with the Model 222NRC. Position 1&2 causes the terminal (DTE) to see DSR when the Model 222NRC is powered up properly. Position 2&3 is for Ring Indicate, which is non-functional on the Model 222NRC. Furthermore, use of position 2&3 will cause DSR to float, which will lead to improper operation of the Model 222NRC.

JB6 & JB7 Position 1&2 = DSR Position 2&3 = (Ring Indicate) Not Valid for Model 222NRC

The 1000R16P Rack Chassis (shown in Figure 7, below) has sixteen short range modem card slots, plus its own power supply. Measuring only 3.5" high, the 100016RP is designed to occupy only 2U in a 19" rack. Sturdy front handles allow the 1000R16P to be extracted and transported conveniently.

Figure 7. Model 1000R16P Rack Chassis with Power Supply

4.1.1 THE RACK POWER SUPPLY

The power supply included in the Model 1000R16P rack uses the same mid-plane architecture as the modem cards. The front card of the power supply slides in from the front, and the rear card slides in from the rear. They plug into one another in the middle of the rack. The front card is then secured by spring loaded thumb screws and the rear card by conventional metal screws.

WARNING! There are no user-serviceable parts in the

power supply section of the Model 222NRC. Voltage setting changes and fuse replacement should only be performed by qualified service personnel. Contact Patton Electronics Technical support at (301)975-1007 for more information.

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Switching the Power Supply On and Off

The power switch is located on the front panel. When plugged in and switched on, a red front panel LED will glow. Since the Model 1000R16P is a "hot swappable" rack,

to be installed before switching on the power supply

it is not necessary for any cards

. The power supply

may be switched off at any time without harming the installed cards.

The Model 222NRC is wired as a DCE (Data Communications Equipment). Therefore, it wants to connect to a DTE (Data Termination Equipment). If your RS-232 output device is a DTE, you may need to use a special cable (such as a DB-25 to modular cable). If your RS-232 output device is a DCE, you will require a null modem connection. Call Patton Technical Support at (301) 975-1007 for specific installation instructions.

4.2 INSTALLING THE MODEL 222NRC INTO THE CHASSIS

The Model 222NRC is comprised of a front Functions card and a rear Interface card. The two cards connect in the rack chassis via mating 50 pin card edge connectors. Use the following steps as a guideline for installing each Model 222NRC into the Model 1000R16P rack chassis:

1. Slide the rear Interface card into the back of the chassis along the

metal rails.

2. Secure the rear card using the metal screws provided.

3. Slide the Function card into the front of the chassis. It should

meet the rear card when it's almost all the way into the

chassis.

gently

4. Push the front card

into the card-edge receptacle of the rear

card. It should "click" into place.

5. Secure the front card using the spring loaded thumb screws.

Note: Since the Model 1000R16P chassis allows "hot swapping" of cards, it is not necessary to power down the rack when you install or remove a Model 222NRC.

4.3 RS-232 CONNECTION

The RS-232 ports are always the

lower

ports on the interface card. The 10-pin RJ-45s are connected according Patton's Modified Modular Interface Standard (based on the EIA/TIA-561Standard). For specific interface pin-outs, please refer to the diagrams in Appendix D.

4.4 TWISTED PAIR CONNECTION

The Model 222NRC operates full duplex over two twisted pair.

all

applications, the twisted pair wire must be 26 AWG or thicker,

In unconditioned, dry, metallic wire. Both shielded and unshielded wire are satisfactory. Note: The Model 222NRC can only be installed on private twisted pair cable. Dial-up analog circuits, such as those used with a standard Hayes-type modem, are

not acceptable.

For further

information about acceptable wire grades, please refer to the table in

Appendix B.

4.4.1 POINT-TO-POINT TWISTED PAIR CONNECTION

The 6-position RJ-11 and 8-position RJ-45 jack options for the

upper

Model 222NRC–always the

jack on the rear interface card–are prewired for a standard TELCO wiring environment (See Appendix D for pin number orientations). Connection of a 4-wire twisted pair circuit between two or more Model 222NRCs requires a

crossover cable

shown in the following charts.

RJ-11 Cable

SIGNAL PIN# PIN# SIGNAL

GND

†

1-----------------------6 GND

†

RCV- 2-----------------------4 XMTXMT+ 3-----------------------5 RCV+ XMT- 4-----------------------2 RCVRCV+ 5-----------------------3 XMT+ GND

†

6-----------------------1 GND

†

Notice! Any terminal cable connected to the Model

222NRC must be shielded cable, and the outer shield must be 360 degree bonded–at both ends–to a metal or metalized backshell.

(continued)

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SIGNAL PIN# PIN# SIGNAL

†

GND RCV- 3-----------------------5 XMTXMT+ 4-----------------------6 RCV+ XMT- 5-----------------------3 RCVRCV+ 6-----------------------4 XMT+

†

GND

†

Connection to ground is optional

RJ-45 Cable

2-----------------------7 GND

7-----------------------2 GND

5.0 OPERATION

Once you have configured each Model 222NRC and connected the cables, you are ready to operate the units. This section describes the LED status monitors and the power-up procedure.

†

5.1 LED STATUS MONITORS

The Model 222NRC features thirteen front panel LEDs that indicate the condition of the modem and communication link. Figure 8 (below)

†

shows the positions of the LEDs, and the bullets describe their functions.

Model 1000RC

Model 222NRC

Power

Unit

Figure 8. The Model 222NRC front panel, showing LED positions

• The green "PWR" LED glows when power is being applied to the modem card through its mid-plane chassis connection.

• The green "TD" and "RD" indicators blink to show positive state data activity. The red "TD" and "RD" indicators blink to show negative state data activity. A solid red light indicates an idle state.

• If your carrier detect strap is configured as “Always On”, the “CD” light will always be green. If the carrier detect strap is set to “Normal”, the green LED lights when the carrier is on; the red LED lights when the carrier is off.

5.2 POWER-UP

There is no power switch on the Model 222NRC: Power is automatically applied to the 222NRC when its card-edge connector touches the chassis' mid-plane socket, or when the chassis' power is turned on.

Note: The 222NRC is a "hot swappable" card—it will not be

damaged by plugging it in or removing it while the rack is powered up.

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APPENDIX A

SPECIFICATIONS

CABLE RECOMMENDATIONS

APPENDIX B

Transmission Format: Asynchronous Data Rate: 0 to 19.2 Kbps Surge Protection: 600W power dissipation at 1 mS Control Signal: DCE Mode: CTS (Pin 8) turns ON immediately after

the terminal raises RTS (Pin 9); DSR (Pin 2) turn ON immediately after the rack has power; CD (Pin 3) may be constantly “ON” or “normal” (i.e. follows presence or absence of RXC signal).

Transmit Line: 4 wire, unconditioned line (2 twisted pairs) Transmit Mode: Full duplex, 4-wire Line Connection: RJ-11 or RJ-45 jacks Temperature Range: 1-50°C (34-122°F) Altitude: 0-15,000 feet Humidity: Up to 95% non-condensing Dimensions: 0.95”w x 3.1”h x 5.4”l

The Patton Model 222NRC operates at frequencies of 20kHz or less and has been performance tested by Patton technicians using twistedpair cable with the following characteristics:

ire Gauge Capacitance Resistance

19 AWG 83nf/mi or 15.72 pf/ft. .0163 Ohms/ft. 22 AWG 83nf/mi or 15.72 pf/ft. .0326 Ohms/ft. 24 AWG 83nf/mi or 15.72 pf/ft. .05165 Ohms/ft.

To gain optimum performance from the 222NRC, please keep the following guidelines in mind:

•

Always

• Use twisted pair wire with a capacitance of 20pf/ft or less

• Avoid twisted pair wire thinner than 26 AWG (i.e. avoid higher AWG numbers than 26)

• Use of twisted pair with a resistance greater than the above specifications may cause a reduction in maximum distance obtainable; functionality should not be affected

use twisted pair wire—this is not an option

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APPENDIX C

FACTORY REPLACEMENT PARTS

APPENDIX D

INTERFACE SETTINGS & ORIENTATION

The Patton Model 222NRC rack system features interchangeable rear half cards, power cords/fuses for international various operating environments and other user-replaceable parts. Model numbers and descriptions for these parts are listed below:

Patton Model # Description

222NRPEM.........................120/240V Rear Power Entry Module

222NRPSM-1......................120/240V Front Power Supply Module

222NRPEM-DC...................DC Rear Power Entry Module

222NRPSM-48A..................48V Front Power Supply Module

0805US...............................American Power Cord

0805EUR.............................European Power Cord CEE 7

0805EURP..........................Europlug Power Cord CEE 7/16

0805UK...............................United Kingdom Power Cord

0805AUS.............................Australia/New Zealand Power Cord

0805DEN.............................Denmark Power Cord

0805FR ...............................France/Belgium Power Cord

0805IN.................................India Power Cord

0805IS.................................Israel Power Cord

0805JAP..............................Japan Power Cord

0805SW ..............................Switzerland Power Cord

0516FPB1...........................Single Width Blank Front Panel

0516FPB4...........................4-Wide Blank Front Panel

0516RPB1...........................Single Width Blank Rear Panel

0516RPB4...........................4-Wide Blank Rear Panel

PATTON MODULAR INTERFACE - 10 Wire RJ-45

Contact Number Circuit Description

1 N/A Not Used 2 125 DSR 3 109 Received Line Signal Indicator (CD) 4 108 / 2 DTE Ready (DTR) 5 102 Signal Common 6 104 Received Data 7 103 Transmitted Data 8 106 Clear to Send 9 105 / 133 Request to Send / Ready for Receiving

10 N/A Not Used

Pins 2-9 conform to the EIA/TIA-561 eight position non-synchronous interface standard.

056S1..................................Set of 16 #4 pan head screws/washers

For all modular jacks (6, 8 or 10 position): Pin 1 is always toward the bottom when the rear card is oriented correctly in the slot