Telebyte 458-3SLB User manual

Model 458-3SLB (3-Slot Chassis)
Rev D
Date of Publication: 02/25/2019
Line modules not included.
“Results You Can Count On”

Customer Support
Thank you for your purchase of the Telebyte Model 458-3SLB (3-Slot Chassis).
This compact unit is extremely easy to use and a perfect fit when only one, two
or three line modules are required. The Model 458-3SLB is ideally suited for
testing DSL modems and other bandwidth-compliant telecom devices in a high-
volume production line environment. When used in conjunction with up to three
8-channel 458 Line Modules, it becomes a 24-channel local loop simulator. The
built-in Control Module interfaces with a PC or terminal via IEEE-488 or RS-
232/Ethernet to control loop-length settings or it can be used as a stand-alone
unit. User-command language may be used for control. In addition, line length is
displayed on the front of the unit and can be set via a keypad on the front panel.
Contact Information:
Telephone E-mail/Internet
General: 631-423-3232 [email protected]
Technical support: 800-835-3298 [email protected]
Fax: [phone] www.telebytebroadband.com
Mail
Telebyte, Inc.
355 Marcus Blvd
Hauppauge, NY 11788

Customer Care
Warranty
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
Extended Customer Care
Refer to the Customer Care section of the Telebyte web site for the most current information on extended
warranty and calibration contracts 2,3,4:
http://www.telebytebroadband.com/customercare.html
Disclaimer of Warranties and Other Terms and Conditions
1TELEBYTE, 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 Hauppauge, 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 [e-mail]
Please be sure to reference the RMA number on the outside container.
Personnel Safety
Power Input and Power Cord Rating
The 458-3SLB input voltage is rated for 85 to 240 VAC-RMS, 47 to 63 Hz. Before connecting
power verify that the Power Entry switch is set to off and that the Power Cord to be connected
to the 458-3SLB Power Entry is properly rated for the input voltage applied before connecting or
setting power on.
The cold start of the 458-3SLB is 20A at 110VAC-RMS and 40A at 220VAC-RMS. The 458-3SLB
Power Entry contains a 3-Ampere Slow Blow fuse that is rated at 250VAC and is 0.250”Dia x
1.250” Long (6.35mm x 31.75mm). For replacement of the fuse use Littlefuse 0313003.HXP or an
equivalent rated fuse. Do not use smaller or larger current rated fuses and verify that the fuse is a
Slow-Blow type.
Enclosure Grounding
When installed in a Rack verify that the Rack is grounded and that the bolts holding the enclosure
to the Rack are tightened in order to properly Earth Ground the enclosure.
When not installed in a Rack connect an AWG-18 gauge (0.823mm2) wire between the lug at the
rear of the 458-3SLB and a good facility Earth Ground to ensure personnel Safety. Failure to
connect the enclosure to Earth Ground compromises Safety conditions and may also affect
system performance by exposing the system to various signals that are in the vicinity.
Disassembly
The top cover of the system may not be removed as it exposes personnel to hazardous power
line voltages. In addition, it voids the Telebyte warranty.
Equipment Safety
Do not remove or insert Line Modules with the 458-3SLB Power in the ON state. Set the Power
Entry switch at the rear of the system to the OFF state prior to Module removal and set it to the
ON state after removal or after the Module is replaced.

Table of Contents
1.0 Introduction...................................................................................................................................... 1
Chassis/Control Module.................................................................................................................. 1
Line Module Series ......................................................................................................................... 2
2.0 Specifications................................................................................................................................... 3
3.0 RS-232/Ethernet Controls ............................................................................................................... 4
RS-232 Connections....................................................................................................................... 4
RS-232/Ethernet Connections ........................................................................................................ 5
User Command Interface................................................................................................................ 5
RS-232 Mode Command List.......................................................................................................... 5
4.0 IEEE Controls.................................................................................................................................. 9
Connections .................................................................................................................................... 9
User Command Interface................................................................................................................ 9
IEEE Mode Command List............................................................................................................ 10
5.0 Enabling RS-232/Ethernet Controls .............................................................................................. 15
6.0 Keypad Controls............................................................................................................................ 41

Model 458-3SLB (3-Slot Chassis) Page 1
1.0 Introduction
The Model 458-3SLB (3-Slot Chassis) is a compact, versatile unit that accepts 1, 2 or 3 line modules
and controls from 1 - 24 channels. It is ideal for testing DSL modems and other bandwidth-compliant
telecom devices in a high-volume production environment. While it can be used as a stand-alone unit,
the built-in Control Module interfaces with a PC via RS-232, IEEE-488, or Ethernet. Line lengths and
configuration settings appear on an LCD display on the front of the unit and can be set via a keypad.
For added convenience, the Control Module firmware is field-upgradeable through the RS-232 port.
The same software is used for the 458-CM (16-Slot chassis).
The Model 458-3SLB is used with our advanced 458 Line Modules that simulate several cable types
and offer the bandwidth requirements for today’s xDSL technologies such as varieties of ADSL,
ADSL2+ and VDSL2. User-friendly GUIs (included with line modules) provide another means of
controlling loop lengths and communication parameters. For more information about Telebyte’s plug-
in line modules, refer to the individual datasheets or manuals.
➢The Model 458-3SLB is totally compatible with the 458-3SLA.
➢Telebyte recommends customers use the latest firmware available on our web site at
www.telebytebroadband.com.
➢The 458-3SLB is designed to provide sufficient power to our 458-RT Ring-Trip Interference
Simulator. Only one 458-RT can be used in a 458-3SLB at any given time.
Chassis/Control Module
The Chassis may be mounted in a standard 19-in rack and accepts a maximum of three Line
Modules.
The front of the Model 458-3SLB is shown with three line modules installed (not included).

Model 458-3SLB (3-Slot Chassis) Page 2
Note that the slot number designations begin with 1 at the top of the unit.
The image above shows the rear of the 458-3SLB with one line module installed (not included).
Note the letter “B”differentiates the 458-3SLB from the 458-3SLA. Three types of connectors are shown -
RS232, IEEE-488 and Ethernet. The Grounding Lug is located on the left side.
The built-in Control Module is used to configure a Line Module to a particular length via a pushbutton
keypad on the front of the unit. The user may also use the IEEE-488, RS-232 or Ethernet port for
control. When configured for IEEE-488, the Model 458-3SLB can be operated from an IEEE
Controller such as a PC equipped with an IEEE interface board. In RS-232 mode, the unit can be
connected to any RS-232 device (e.g., a terminal or PC) that has a terminal emulation program such
as Hyper Terminal installed. In RS-232/Ethernet mode, RS-232 commands are sent over an Ethernet
connection. This allows a remote PC connected to a LAN to communicate with the 458-3SLB via RS-
232 commands. The 458-3SLB system can only be used in a controlled electromagnetic
environment.
In order to send RS-232 commands over an Ethernet connection, this feature must be
enabled. Refer to section 6.0 Enabling RS-232/Ethernet Control for detailed
instructions.
Line Module Series
A maximum of three Model 458 Line Modules (sold separately) can be placed into the chassis. Each
458 Line Module can be individually set by the Control Module. Communications between the Control
Module and the 458 Line Module are via a backplane. The backplane will pass power and the signals
to control the length of each card. The RJ-45 connectors used to connect to the unit to be tested are
mounted directly on the 458 Line Module. Telebyte provides GUI software for a user-friendly interface
when configuring 458 Line Modules (available for download from our Web site at
www.telebytebroadband.com). Refer to the individual documentation for more information on our Line
Module series.

Model 458-3SLB (3-Slot Chassis) Page 3
2.0 Specifications
Product Specifications (Chassis and Control Module)
Controls
Keypad for setting loop lengths and IEEE-488 address, RS-232, or
Ethernet communication parameters.
Indicators
Backlit LCD display of line length and set up parameters.
Power
88 to 250 VAC, 50 or 60 Hz
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: +32 F to +122 F (0 to +50 degrees C)
Storage: 0 to 95% relative humidity (non-condensing)
Remote Control
Connectors
RS-232: DB9 female (DCE); GPIB:IEEE488 24-pin connector.
Ethernet: RJ-45
Plug-In Compatibility
Accepts one, two or three 458 Line Modules or one 458-RT

Model 458-3SLB (3-Slot Chassis) Page 4
3.0 RS-232/Ethernet Controls
RS-232 Connections
The Model 458-3SLB is completely controllable from an RS-232 source. The following section
explains the connections and the controls necessary for RS-232 operation. See Figure 2 for an
illustration of the pin connectors.
CONNECTOR DB9
5
9
4
8
3
7
2
6
1
RXD
TXD
CTS/DSR
Figure 2 DB-9 for RS-232 Control
Pin 2 on the Model 458-3SLB connects to the RECEIVED DATA pin in the Communications
Port Connector on the PC or controller.
Pin 3 on the Model 458-3SLB connects to the TRANSMIT DATA pin in the Communications
Port Connector on the PC or controller.
Pin 5 on the Model 458-3SLB 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:
DB-9
DB-25
Direction
Received Data
2
3
Serial Data from Model 458-3SLB
Transmitted Data
3
2
Serial Data to Model 458-3SLB
Ground
5
7
Common Ground
CTS
8
5
+ Voltage Out
DSR
6
6
+ Voltage Out
The remaining pins are not connected to the Model 458-3SLB.

Model 458-3SLB (3-Slot Chassis) Page 5
RS-232/Ethernet Connections
RS-232 Commands may be sent over an Ethernet connection to control the Model 458-3SLB.
This allows users to connect to the 458-3SLB over a LAN using the RS-232 commands listed
in this section.
The RS-232/Ethernet feature must be enabled prior to sending commands. Refer to
section Enabling RS-232/Ethernet Controls for detailed instructions.
User Command Interface
ASCII command set compliant with IEEE 488.2 and in Hex ASCII two-character bytes per 488
bus data byte.
RS-232 - LF, Baud rate 300 to 19200, commands use terminating character (Carriage Return),
eight Data Bits, one Stop Bit.
RS-232 Mode Command List
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.
md
Disable manual control
Disable manual setting of lengths or configuration (does not apply to 458-CM)
me
Enable manual control
Enable manual setting of lengths or configuration (does not apply to 458-CM)
id
Identify model no. and rev.
Read model no. and software revision code
re
Read last error
Read description of last error

Model 458-3SLB (3-Slot Chassis) Page 6
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 →01 - 02 (458-2SL) 01 –03 (458-3SLB) or 01 –16 (458-CM)
H = Channel number →1 - 8
LE = Length (in feet)

Model 458-3SLB (3-Slot Chassis) Page 7
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 may be used 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.

Model 458-3SLB (3-Slot Chassis) Page 8
Read the lengths of a range of boards command
rl:LM-LM
Example: rl:01-03 reports the lengths of all channels on all boards in a 3-slot chassis.
Read the serial number of one line module command
rs:LM
Read the serial numbers of all cards command
rs:all
Response Definitions
Responses to SL (Set Length) Command
*
Command valid and completed execution. Ready for
next command.
?[XXX] Card Not Found
Card not found in slot specified.
?[XXX] Invalid Card Number
Card number outside the range for the type of control
module.
?[XXX] Invalid Channel Number
Channel number out of range (e.g., not 1 –8)
?[XXX] Invalid Length
Length not valid for the specific line module and/or
channel
?[XXX] Invalid Command
Any error not covered in the above list, including the
specification of incorrect line numbers for a given
channel.

Model 458-3SLB (3-Slot Chassis) Page 9
4.0 IEEE Controls
Connections
The Model 458-3SLB is completely controllable from an IEEE 488.1 (488.2) source. The
following section explains the connections and controls necessary for IEEE operation.
Figure 3 IEEE 24-pin Connector
Connect a standard IEEE cable from the Model 458-3SLB to the IEEE General Purpose
Interface Bus controller.
User Command Interface
The Model 458-3SLB 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.

Model 458-3SLB (3-Slot Chassis) Page 10
IEEE Mode Command List
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.
: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

Model 458-3SLB (3-Slot Chassis) Page 11
*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)
*SRExx
Enables Status Bits as defined by the numerical value of the bits following the
command.
*SRE?
Used to read the Enabling Bits in the Status Register.
*STB?
Reads the Status Register
*ESExx
Enables Event Status Bits as defined by the numerical value of the bits
following the command.
*ESE?
Used to read the Enabling Bits in the Event Status Enable Register.
*ESR?
Reads the Event Status Enable Register.

Model 458-3SLB (3-Slot Chassis) Page 12
Status Byte Register
Bit
Value
Set
Operation
0
1
0
Not Supported
1
2
0
Not Supported
2
4
0
Not Supported
3
8
0
Not Supported
4
16
1
Enable Message Available bit (MAV)
5
32
1
Enable Event Status Bit (ESB)
6
64
1
MSS this bit is always enabled
7
128
0
Not Supported
Event Status Enable Register
Bit
Value
Set
Operation
0
1
1
Operation Complete
1
2
0
Not Supported
2
4
1
Query Error
3
8
0
Not Supported
4
16
1
Execution Error
5
32
1
Command Error
6
64
0
Not Supported
7
128
1
Power On
Set Length command
:setcard:length:LM:H:LE,C
Where:
LM = Module slot number →01 - 02 (458-2SL) 01 –03 (458-3SLB) or 01 –16 (458-CM)
H = Channel number →1 - 8
LE = Length (in feet)
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.

Model 458-3SLB (3-Slot Chassis) Page 13
Responses to SC (SetCard) Command
*
Command valid and completed execution. Ready for
next command.
?[XXX] Card Not Found
Card not found in slot specified.
?[XXX] Invalid Card Number
Card number outside the range for the type of control
module.
?[XXX] Invalid Channel Number
Channel number out of range (e.g., not 1 –8)
?[XXX] Invalid Length
Length not valid for the specific line module and/or
channel
?[XXX] Invalid Command
Any error not covered in the above list, including the
specification of incorrect line numbers for a given
channel.
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

Model 458-3SLB (3-Slot Chassis) Page 14
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

Model 458-3SLB (3-Slot Chassis) Page 15
5.0 Ethernet Connections & Commands
Enabling Ethernet Connectivity
RS-232 commands may be sent over an Ethernet connection to control the Model 458-3SLB. This is
made possible by a Lantronix XPort transceiver installed in the unit. A one-time set up must be
performed to assign an IP address to the transceiver and configure a virtual COM port. This is all
done using a remote PC. It requires one software installation to assign an IP address to the
transceiver and a second one to configure the virtual COM port.
Before You Begin
Connect the 458-3SLB and a remote PC to the LAN using Ethernet cables. Please note, when
connecting the Model 458-3SLB directly to a PC a crossover Ethernet cable is used for
communication; when connecting to a network (through a switch or router) a straight-through Ethernet
cable is used.
Administrator access to the remote PC is required.