Model 458-LM-A2-36
Local Loop Simulator

0315-0354 Rev.A
Date of Publication: 10/31/05

 

 

 

 

Customer Support

Thank you for your purchase of the Telebyte Model 458-LM-A2-36 Local Loop Simulator, featuring two channels that simulate 24 and 26 AWG PIC as specified in T1.417.

 

 

 

 

 

 

 

Warranty

Included With Your Purchase
One-year Warranty •     Telebyte will furnish parts and labor for the repair or replacement of products found by Telebyte to be defective in material or workmanship during the warranty period.1 One-year Calibration (where applicable) •     One N.I.S.T. traceable calibration on the first-year anniversary of the product ship date.2 •     Calibration report to ensure traceability.
Extended Customer Care
There are two options available. Our three-year extended warranty extends the original warranty by an additional 36 months and the three-year calibration contract provides 36 additional months of calibration.
Three-Year Extended Warranty You can extend the original one-year warranty that comes with your product by purchasing the Three-Year Extended Warranty.3  Features: ·          Telebyte will furnish parts and labor for the repair or replacement of products found by Telebyte to be defective in material or workmanship during the warranty period.1	Three-Year Calibration Contract (where applicable) Extended calibration is available through the Three-Year Calibration Contract.4  Features: ·          Yearly N.I.S.T. traceable calibrations, each on the second, third and fourth anniversary of the ship date.2 ·          Report to ensure traceability. ·          Automatic notification when calibration of your product is due.
Disclaimer of Warranties and Other Terms and Conditions
1 TELEBYTE, INC. warrants its broadband simulation equipment to be free from defects in material and workmanship, under normal and proper use and in its unmodified condition, for 12-months, starting on the date it is delivered for use. TELEBYTE’S sole obligation under this warranty shall be to furnish parts and labor for the repair or replacement of products found by TELEBYTE to be defective in material or workmanship during the warranty period. Warranty repairs will be performed at the point of manufacture. Equipment approved for return for warranty service shall be returned F.O.B. TELEBYTE factory and will be redelivered by TELEBYTE freight prepaid, except for non-continental U.S.A. locations. These deliveries will be sent COD freight and import/export charges. 2 The customer is responsible for freight and customs charges when shipping products to and from Telebyte for calibration services. 3 You must purchase the extended warranty at the time of purchase or during the initial warranty period. 4 You must purchase the calibration contract at the time of purchase or during the initial warranty period. The above warranty is in lieu of all other warranties, expressed or implied, statutory or otherwise, including any implied warranty of merchantability or fitness for a particular purpose. TELEBYTE shall not be liable for any damages sustained by reseller or any other party arising from or relating to any equipment failure, including but not limited to consequential damages, nor shall TELEBYTE have any liability for delays in replacement or repair of equipment.

 

Equipment Returns

 

Out of warranty equipment may be returned, prepaid, to the Greenlawn, N.Y. customer service facility. Return shipping charges will be billed to the customer. The repaired unit will have a 90-day warranty. In those cases where "no trouble" is found, a reduced charge will be billed to cover handling, testing, and packaging. Whether in or out of warranty, a Return Material Authorization number (RMA) is required and may be obtained by:

 

Calling customer service at 631-423-3232 or 800-835-3298

Sending a request via Fax at 631-385-8184

E-mailing us at support@telebytebroadband.com

 

Please be sure to reference the RMA number on the outside container.

 

Table of Contents

1.0 Introduction......................................................................................................................... 1-1

 

2.0  Specifications...................................................................................................................... 2-1

2.1 458-LM-A2-36................................................................................................................ 2-1

2.2 458-2SL........................................................................................................................ 2-2

2.3 458-CM......................................................................................................................... 2-3

 

3.0 Connections........................................................................................................................ 3-1

3.1 458-LM-A2-36................................................................................................................ 3-1

3.2 458-2SL/458-CM............................................................................................................ 3-2

3.2.2 Connections  458-CM/458-2SL IEEE488 Control............................................................ 3-3

 

4.0 Control................................................................................................................................ 4-1

4.1.1 RS-232 (Serial Port) Remote Commands....................................................................... 4-1

4.1.2  IEEE 488 (GPIB) Remote Commands.......................................................................... 4-4

4.2  Graphical User Interface................................................................................................. 4-8

4.3 LCD Display (458-2SL)................................................................................................... 4-9

1.0 Introduction

The Model 458-LM-A2-36 Local Loop Simulator simulates 24 and 26 AWG PIC as specified in T1.417. This plug and play line module provides two channels with loop lengths from 0 to 3,150 ft, in 50-ft increments.

 

Other features include:

 

      -     Bandwidth to 36 MHz

      -     Accurately simulates attenuation and impedance

      -     Two channels per line module (one 24 and one 26 AWG)

      -     Plugs into our 458-CC (16-slot chassis) or 458-2SL (2-slot chassis)

      -     Independent control of each channel

      -     Ability to open loop at either end of any channel

      -     MAE <1 dB

 

 

Figure 1: Front View of Model 458-LM-A2-36. Both the front and rear of the line module have 4 RJ-45 connectors.

 

 

2.0 Specifications

2.1 458-LM-A2-36

 

Product Specifications - Model 458-LM-A2-36
Features	·         Accurately simulates attenuation and impedance ·         Full bi-directional operation at all specified frequencies
Bandwidth	·         DC to 36 MHz
Attenuation Accuracy	·         MAE < 1 dB (when source and load impedances are 100 ohms) 25 kHz to 36 MHz
Maximum Attenuation	> 90 dB
Impedance Accuracy	Typically +/- 10% 25 kHz to 36 MHz
Maximum Voltage Tip –Ring	200 V
Maximum Current	130 mA
Connectors	4 RJ-45’s on front including 2 for noise injection. 4 RJ-45’s on back including two for noise injection.

 

2.2 458-2SL

 

Product Specifications – Model 458-2SL
Switches	Two rotary encoders (one per channel) located on front of control module. Push-button switch for setting IEEE 488 address or RS-232 communication parameters.
Indicators	Backlit LCD display of line length and set up parameters.
Power	100 - 250 VAC, 50 or 60 Hz (universal power supply)
Size	[2U] 19 in W x 22 in D x 3.47 in H  (482.6 mm W x 558.8 mm D x 88.1 mm H)
Environmental	Operating temperature: 0 to 50 degrees C, humidity: 0 to 95% relative humidity (non-condensing).
Remote Control Connectors	RS-232: DB9 female (DCE); GPIB:IEEE488 24-pin connector.
User Command Interface	ASCII command set compliant with IEEE 488.2 and Hex ASCII two-character bytes per 488 bus data byte. RS-232: HDX (Echo characters); Translate CR to CR + LF; baud rate: 300 to 19200; commands use terminating character (carriage return); 8 Data bits; 1 stop bit.

 

2.3 458-CM

 

Product Specifications – Model 458-CM
Switches	Power on/off. Eight-position dip switch located on the Control Module for setting IEEE 488 address or RS-232 communication parameters.
Indicators	Two LED’s on Control Module indicating power-on and communication error.
Power	100, 110 or 220 VAC
Size	[7U] 19 in W x 22 in D x 12.22 in H (482.6 mm W x 558.8 mm D x 310.4 mm H)
Environmental	Operating temperature: 0 to + 500 C, Humidity: 0 to 95% relative humidity (non-condensing).
Remote Control Connectors	RS-232: DB9 female (DCE); GPIB:IEEE488 24-pin connector.
User Command Interface	ASCII command set compliant with IEEE 488.2 and Hex ASCII two-character bytes per 488 bus data byte. RS-232: HDX (Echo characters); Translate CR to CR + LF; baud rate: 300 to 19200; commands use terminating character (carriage return); 8 Data bits; 1 stop bit.

 

   Specifications are subject to change without notice. Made in USA. 

 

 

3.0 Connections

3.1 458-LM-A2-36

 

The input and output ports are interchangeable (i.e., the unit is bidirectional). The cable pair is accessible through the RJ-45 jacks on the front and rear of the line module. The two center contacts, Tip and Ring (pins 4 and 5), of each RJ-45 are supported. Refer to Figure 2 for the configuration of the RJ-45 jack.

 

i Do not exceed the maximum ratings as listed in section 2.0, “Specifications.”  For best accuracy, the I/O cables should be limited to 3 m or less.

 

 

 

 

Figure 2: RJ-45 Configuration

 

 

Figure 3: RJ-45 Configuration

 

3.2 458-2SL/458-CM

3.2.1 Connections 458-CM/458-2SL - RS232 Control

A “straight-through” serial cable (not a “crossover”) is used to connect the RS-232 control unit to the Telebyte chassis. The Model 458-CM(-2SL) is completely controllable from an RS-232 source. The following section explains the connections and the controls necessary for RS-232 operation. See Figure 4 for an illustration of the pin connectors

 

 

Figure 4  DB-9 for RS-232 Control

 

Pin 2 on the Model 458-CM(-2SL) connects to the RECEIVED DATA pin in the Communications Port Connector on the PC or controller.

 

Pin 3 on the Model 458-CM(-2SL) connects to the TRANSMIT DATA pin in the Communications Port Connector on the PC or controller.

 

Pin 5 on the Model 458-CM(-2SL) connects to the GROUND pin in the Communications Port Connector on the PC or controller.

 

Pins 6 and 8 are connected together and held at a positive voltage.

 

Common Communications Port Connectors, such as those found on PCs, are DB-9 and DB-25. The standard pin assignments for these connectors are as follows:

 

 

 

The remaining pins are not connected to the Model 458-CM(-2SL).

User Command Interface

 

RS-232 - LF, Baud rate 300 to 19200, commands use terminating character (Carriage Return), eight Data Bits, one Stop Bit.

 

3.2.2 Connections  458-CM/458-2SL IEEE488 Control

 

The Model 458-CM(-2SL) is completely controllable from an IEEE 488.1 (488.2) source. The following section explains the connections and controls necessary for IEEE operation.

 

ASCII command set compliant with IEEE 488.2 and in Hex ASCII two-character bytes per 488 bus data byte.

 

 

Figure 3  IEEE 24-pin Connector

 

Connect a standard IEEE cable from the Model 458-CM(-2SL) to the IEEE General Purpose Interface Bus controller.

 

User Command Interface

The Model 458-CM(-2SL) is intended to be operated from an IEEE Controller such as a PC equipped with an IEEE interface board. The set up of your computer and IEEE controller board may be different depending on the manufacturer of your equipment. Follow the set up instructions supplied with your equipment.

 

 

4.0 Control

The Model 458-LM-A2-36 can be controlled three ways: Via RS-232 and IEEE488 Remote Commands, our GUI interface or the LCD display on the front panel of our 458-2SL.

 

4.1 Remote Commands

 

4.1.1 RS-232 (Serial Port) Remote Commands

md

Disable manual control   

       

            disable manual setting of lengths or

            configuration (used in 458-2SL only)

 

me

Enable manual control  

        

            enable manual setting of lengths or

            configuration (used in 458-2SL only)

 

id

Identify model no. and rev.  

  

read model no. and software revision code

 

re

Read last error   

              

            read description of last error

 

ee

Echo enable  

                  

            echo all inputs and format output for

            terminal display

 

ed

Echo disable

                   

            inputs not echoed and format output for

            user control program

 

h

Help RS232 command list     

    

            read RS232 command list

 

cs:BR

Configure serial     

                          

where BR = 300, 600, 1200, 2400, 4800, 9600 or 19200 

 

cp:ADD

Configure 488        

                          

where ADD = 1, 2, ...  29, 30  (No leading zeroes used)

 

 

Set Length command

 

sl:LM:H:LE,C

 

where:

 

LM = Module slot number à 01 - 02 or 01 – 16.

 

H  = Channel number à 1 – 2 (A = all channels 1-2, Ch1 = 26 AWG, Ch2 = 24 AWG)

 

LE = Length 0 – 3150 in steps of 50

 

C  = Connect mode:

     N = connect both CO and CPE ends

     P = connect CPE only CO is open

     O = connect CO only CPE is open

     Z = open both CO and CPE ends

 

Example: SL:01:1:2000,N sets channel 1 to 2000 ft for a line module in slot 1.

 

The connect mode is there for those customers who would like to create an “open loop” condition at either the CO or CPE ends, or both.

 

Set all channels on all boards in the system command

 

sl:all:LE,C

 

Example:  sl:all:2000,n sets all channels in the system to 2000 ft

 

Set all channels on a range of boards command

 

sl:LM-LM:LE,C

 

Example:  sl:01-03:2000,n sets all channels on boards 1, 2, and 3 to 2000 ft

 

Set all channels on one board command

 

sl:LM:a:LE,C

 

Example:  sl:01:a:2000,n sets all channels on the board in slot 1 to 2000 ft

 

Read Length command

 

rl:LM:H

 

Example:  rl:01:1 reports the length of channel 1 on the board in slot 1.

 

Read the Lengths of all channels on one board command

 

rl:LM:a

 

Example:  rl:01:a reports the lengths of all channels on the board in slot 1.

 

Read the lengths of all channels on all boards command

 

rl:all

 

Example:  rl:all reports the lengths of all channels on all boards

 

Read the serial number of one line module command

 

rs:LM

 

Read the serial numbers of all cards command

 

rs:all

 

4.1.2  IEEE 488 (GPIB) Remote Commands

:manual:disable

Disable manual control  

        

            disable manual setting of lengths or configuration

 

:manual:enable

Enable manual control  

        

            enable manual setting of lengths or configuration

 

:lasterror

Read last error

               

            read description of last error

 

*idn?

Identify model no. and rev.    

 

            read model no. and software revision code

 

*esr?

Event Status Register read   

 

            read IEEE esr

 

*sre?

Status Request Enable read   

  

            read IEEE sre

*stb?

Status Byte register read 

    

            read IEEE stb

 

*ese?

Enable Status Event read         

 

            read IEEE ese

 

 *sre xx

Status Request Enable write    

 

            write IEEE sre xx

 

*ese xx

Enable Status Event write  

    

            write IEEE ese

 

:cs:BR

Configure serial     

                          

            where BR = 300, 600, 1200, 2400, 4800, 9600 or 19200

 

:cp:ADD

Configure 488        

                          

where ADD = 1, 2, ...  29, 30  (No leading zeroes used)

 

Notes: All Set card lengths, English/Metric mode and Echo enable/disable are maintained during power off in both RS-232 and IEEE modes. Manual control is enabled at power on.

 

 

 

 

 

Set Length command

 

:setcard:length:LM:H:LE,C

 

where:

 

LM = Module slot number à 01 - 02 or 01 – 16.

 

H  = Channel number à 1 - 2

 

LE = Length

 

C  = Connect mode:

     N = connect both CO and CPE ends

     P = connect CPE only CO is open

     O = connect CO only CPE is open

     Z = open both CO and CPE ends

 

Example:  :setcard:length:01:1:2000,n sets channel 1 of the line module in slot 1 to 2000 ft

Set all channels on all boards in the system command

 

:setcard:length:all:LE,C

 

Example:   :setcard:length:all:2000,n  sets all channels on all boards to 2000 ft

 

Set all channels on a range of boards command

 

:setcard:length:LM-LM:LE,C

 

Example:  :setcard:length:01-03:2000,n  sets boards 1, 2 and 3 to 2000 ft

 

Set all channels on one board command

 

:setcard:length:LM:a:LE,C

 

Example:  :setcard:length:1:a:2000,n  sets all channels on the board in slot 1 to 2000 ft

 

Read Length command

 

:readcard:length:LM:H

 

Example:  :readcard:length:01:1

 

Read the lengths of all channels on one board command

 

:readcard:length:LM:a

 

Example:  :readcard:length:01:a

 

Read the lengths of all channels on all boards command

 

:readcard:length:all

 

Read serial number of one line module command

 

:readcard:sn:LM

 

Read all serial numbers command

 

:readcard:sn:all

4.2  Graphical User Interface

 

The 458-LM-A2-36 Graphical User Interface (GUI) can be used to control the Model 458-LM-A2-36. The following are brief instructions for working with the GUI using a typical set up.

 

 

Set Control Module Parameters: Suggested Settings:

 

            Serial/GPIB: Serial

            Com Port/Address: 1

            Baud Rate: 19200

            HDx Slot: 1

            CH1(26 AWG) Distance: as desired

            CH2(26 AWG) Distance: as desired

 

Set Loop

 

Click Set Loop to send settings.

 

 

 

4.3 LCD Display (458-2SL)

 

Top encoder selects module number and channel.

Bottom encoder selects length.

Top display line shows module number and channel.

Bottom display line shows line length and connect mode.

 

The Config button is used to access a second menu on the front panel. The bottom of the LCD will display the Communication settings used. The bottom knob on the 458-2SL will adjust this value between GPIB address 1 - GPIB address 30 as well as RS-232 baud rates 19200,9600,4800,2400,1200 and 600.

 

Allowable lengths (feet)

 All Channels: 0 to 3,150 ft in 50-ft increments.

 

 

Example: Manual Control of the 458-LM-A2-36 with our Model 458-2SL chassis

 

Front of Model 458-2SL, with 458-LM-A2-36 Installed

 

 

 

 

Instructions

 

1.      Turn on power.  The LCD displays “Model 458-2SL,” the current revision of the software and then the board, channel, line length and connect mode.

2.      Rotary encoder 1 will increment the channel number for the current board and, when it reaches the final channel, display the next board number.

3.      Rotary encoder 2 will increment the allowable line length for a given board:channel combination. The connect mode displays automatically.