Telebyte 458-LM-A1-30 User manual

Model 458-LM-A1-30
Multi-Standard Local Loop Simulator
w/ Optional AWGN Generator
0315-0364 Rev. D
Date of Publication: 06/06/2017
“Results You Can Count On”

Customer Support
Thank you for your purchase of the Telebyte Model 458-LM-A1-30 Multi-Standard Local Loop
Simulator with Optional AWGN Generator. This one-channel product simulates 26 AWG PIC
as specified in T1.417.
Contact Information:
Telephone E-mail/Internet
General: 631-423-3232 [email protected]
Technical support: 800-835-3298 [e-mail]
Fax: [phone] www.telebytebroadband.com
Mail
Telebyte, Inc.
355 Marcus Blvd
Hauppauge, NY 11788

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-time 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 three
years and the three-cycle extended calibration contract provides up to six additional years of calibration services.
Telebyte recommends a Calibration Cycle Time of two years for all of its
local loop simulators, crosstalk emulators and noise generators.
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-Cycle Extended Calibration Contract (where
applicable)
Three additional calibration cycles are available through the
Three-Cycle Calibration Contract.4
Features:
·N.I.S.T. traceable calibration.2
·Report to ensure traceability.
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 going to
www.telebytebroadband.com and opening a technical support case.
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-A1-30..............................................................................................................................2-1
2.2 458-3SLB .....................................................................................................................................2-1
2.3 458-CC-16/458-CM ......................................................................................................................2-2
3.0 Control..........................................................................................................................................3-1
3.1.1 RS-232 (Serial Port) Remote Commands.................................................................................3-1
3.1.2 IEEE 488 (GPIB) Remote Commands ......................................................................................3-3
3.2 Graphical User Interface............................................................................................................3-4
3.3 LCD Display...............................................................................................................................3-5

Model 458-LM-A1-30 Multi-Standard Local Loop Simulator w/Optional AWGN Generator Page 1-1
1.0 Introduction
The Model 458-LM-A1-30 Multi-Standard Local Loop Simulator is the ideal solution for ADSL,
ADSL2, ADSL2+, and VDSL2 chip/modem/DSLAM testing out to 24,025 feet in very small
increments. Optional noise modules may be ordered that add in AWGN on the CO and/or CPE
side, depending on the configuration purchased. The ultimate configuration allows for common
or independent noise levels on both sides.
This 30-MHz local loop simulator is plugged into our Model 458-3SLB (3-Slot) or 458-CC-
16/458-CM (16 Slot) chassis where settings are controlled by a convenient keypad located on
the front, RS-232, Ethernet or IEEE-488(GPIB). The modular design of Telebyte’s products
allows the 458-LM-A1-30 to be combined with other line modules for a wide variety of test
configurations.
The diagram above shows a sample test configuration where independent AWGN
may be added to the near and far end of the loop. Variable noise levels provide uncorrelated,
simultaneous injection where desired.

Model 458-LM-A1-30 Multi-Standard Local Loop Simulator w/Optional AWGN Generator Page 1-2
Please note the 458-3SLA or 458-3SLB (3-Slot) is required for this line module.
Ordering Options
458-LM-A1-30
Multi-Standard Local Loop Simulator
Local Loop without noise
458-LM-A1-30-AWGN2
Multi-Standard Local Loop Simulator
with (2) AWGN Generator Modules
Local Loop with two independent noise
sources at the CO and/or CPE end
MODEM
(CPE)
DSLAM
(CO)
MODEM
(CPE)
DSLAM
(CO)
MODEM
(CPE)
DSLAM
(CO)
MODEM
(CPE)
DSLAM
(CO)
MODEM
(CPE)
DSLAM
(CO)
458-LM-A1-30(AWGN1,2)
Variety of Configurations
Local Loop & Noise Combined
Local Loop & Noise Combined
Local Loop & Noise Combined
(Same noise as CPE)
Local Loop & Noise Combined
(Different noise than CPE)
Local Loop only Local Loop only
Local Loop only
Local Loop & Noise Combined
(Same noise as CO)
Local Loop & Noise Combined
(Different noise than CO)
Local Loop only
Noise can be adjusted to create
a different noise for each end.
458-LM-A1-30
458-LM-A1-30-AWGN1
458-LM-A1-30-AWGN1
458-LM-A1-30-AWGN1
458-LM-A1-30-AWGN2

Model 458-LM-A1-30 Multi-Standard Local Loop Simulator w/Optional AWGN Generator Page 2-1
2.0 Specifications
2.1 458-LM-A1-30
Product Specifications
Simulation
•Accurately simulates attenuation and impedance
•Full bidirectional operation at all specified frequencies
•26 AWG PIC as specified in ANSI T1.417
•Optional White Noise (AWGN) Generator
Bandwidth
DC to 30 MHz
Attenuation Accuracy
(when source and load
impedances are 100 ohms)
MAE < 1 dB 20 kHz to 30 MHz
Maximum Attenuation
> 90 dB
Impedance Accuracy
Typically +/- 10% 20 kHz to 30 MHz
Maximum Voltage Tip –Ring
200 V
Maximum Current
130 mA
Connectors
2 RJ-45’s on front
Optional White Noise (AWGN)
Generator (add-on sub-module)
-90 dBm/Hz to -145 dBm/Hz in 0.25-dBm increments
2.2 458-3SLB
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 264 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-LM-A1-30 Multi-Standard Local Loop Simulator w/Optional AWGN Generator Page 2-2
2.3 458-CC-16/458-CM
Product Specifications 458-CC-16 (16-Slot Chassis) & 458-CM (sold separately)
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
100 - 240 VAC, 50 or 60 Hz
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: +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 1-16 458 Line Modules
Specifications are subject to change without notice. Made in USA.
➢Detailed information about the operation of the 458-3SLB and 458-CC-16/458-CM can be
found in the reference manuals for those products. Only information specific to the 458-LM-
A1-30 is provided in this manual.

Model 458-LM-A1-30 Multi-Standard Local Loop Simulator w/Optional AWGN Generator Page 3-1
3.0 Control
The Model 458-LM-A1-30 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 458-3SLx or 458-
CM.
3.1 Remote Commands
3.1.1 RS-232 (Serial Port) Remote Commands
Set Length
Set Length Command Values: SL:M:LE,C
Where,
SL = set length
M = module (slot) number 01 –16 (458-CM) or 01-03 (458-3SLx)
LE = length from 0 - 24025 feet in steps of 25 feet
C = connect mode
N = connect both CO and CPE ends
P = connect CPE only CO open
O = connect CO only CPE open
Z = open both CO and CPE ends
Example:
SL:02:24025,N = Set length of module in slot 02 to 24025 feet with both CO and CPE
connected.
Read Length
Read length command RL:M

Model 458-LM-A1-30 Multi-Standard Local Loop Simulator w/Optional AWGN Generator Page 3-2
Set Noise Mode
Set noise mode/level command SL:M:NOISE:CPE:V1 or SL:M:NOISE:CO:V2
V1,2 = OFF or -90.00 to -145.00 level in 0.25 dBm/Hz steps.
Examples :
SL:02:NOISE:CPE:OFF - Set CPE noise source to off
SL:02:NOISE:CO:OFF - Set CO noise source to off
SL:02:NOISE:CO:-95.00 - Set CO noise source to -95.00 dBm/Hz
SL:02:NOISE:CPE:-123.75 - Set CPE noise source -123.75 dBm/Hz
Note: With both CPE and CO noise sources ON, the levels can be different or the same.
Read Noise Levels
Read noise levels settings command RL:M:NOISE:CO or RL:M:NOISE:CPE

Model 458-LM-A1-30 Multi-Standard Local Loop Simulator w/Optional AWGN Generator Page 3-3
3.1.2 IEEE 488 (GPIB) Remote Commands
Set Length Command
SETCARD:LENGTH:02:24025,N
Read Length Command
READCARD:LENGTH:M
Set Noise Command
SETCARD:LENGTH:M:NOISE:CO:V1,2
Read Noise Command
READCARD:LENGTH:M:NOISE:CO or
READCARD:LENGTH:M:NOISE:CPE

Model 458-LM-A1-30 Multi-Standard Local Loop Simulator w/Optional AWGN Generator Page 3-4
3.2 Graphical User Interface
➢Refer to the 458 Universal GUI reference manual for more information.

Model 458-LM-A1-30 Multi-Standard Local Loop Simulator w/Optional AWGN Generator Page 3-5
3.3 LCD Display
Step One
•Select the slot in the 458-3SLx (3-Slot) Chassis or 458-CC16/458-CM (16-Slot) Chassis
using the UP or DOWN arrows on the LCD display (e.g., when using our 3-slot chassis: slot
1 top, slot 2 middle, slot 3 bottom).
•Select the length for the current slot using LEFT or RIGHT arrow buttons. The length will
increment in 25-foot steps.
Step Two
•Use Up arrow to select the CO or CPE noise.
•Adjust the noise level using LEFT and RIGHT arrow buttons.