Atec D400 User Manual

digital test system
Features
Flash PROMs Allow New
Software Downloads via Dial-up Connection — no more PROM replacement
Expandable Architecture —
Advanced User Interface
featuring a 4-line, 160 Character Backlit Supertwist Display
Speaker Output — Voice
conversation monitored simultaneously in both directions
History file permits multiple
storage of measured events
D400/D450
Description
If you’ve been waiting for the perfect digital test set, then wait no longer! The Wilcom D400 Digital Test System ushers in a new era in transmission testing. By providing a complete set of T1 Test functions today while looking ahead to your testing needs of tomorrow the D400 removes one major drawback found in other test sets — obsolescence.
Rest easy knowing you can purchase only those test functions that are required immediately. Then as your testing needs grow, simply purchase the option cards and software packages that meet your new demands. Installation is easy, performed by you
or through our factory. To make installation of option software as simple as possible, the D400 includes Flash PROMS. Using
Flash PROMS allows downloading of new system software by dial-up modem connection. Therefore, physically changing the PROMS is no longer a concern. In a world of ever changing technology, the D400 is definitely a safe investment.
The D400 Digital Test System is designed with expansion in mind. Its rugged chassis can accommodate a wide selection of option cards (e.g. BERT testing, DS3 Drop & Insert, DTMF/ MF signaling, DDS & Factional T1, FDL Access, SLC-96 Derived Data Link access) and two processor enhancements (e.g. memory expansion, internal dial-up modem). Back panel connection plates provide the capability to add any type of future connector — including 75 coaxial, RS-232C, and
fiber optic. The 75 watt power supply has enough muscle to support all currently available and future option cards, and the Intel 80188-based processor has memory and capacity to spare.
The D400 Digital Test System is available in two versions: a bench test set version, the D400 with five expansion slots and a field test set version, the D450 with two expansion slots. Both base units are complete in-service T1 test sets. Their full­duplex drop and insert capabilities allow simultaneous channel testing in both directions. The two channel tone synthesizers and receivers provide noise and frequency measurements from 0 to 3990 Hz. Bit patterns can be sent and displayed in both directions simultaneously. The A/B/C/D signaling bits of all 24 channels can be scanned and displayed on screen. Loop timing and frame slip counting is performed. Plus all the performance monitoring features are included so tariffed service require­ments can be checked and verified. This makes the D400 and D450 base units complete DS1 test sets unto themselves.
Several optional accessories are available, including the D555 Non-Intrusive Probe used for testing T1 anywhere on twisted pair, a thermal printer, and a padded carrying case. Shipped with every unit is a comprehensive manual and the D400 EZ Test Index, a quick step-by-step guide to test setup.
Wilcom
Isolates loop timing problems and verifies stratum 2 clock synchronization. Improperly synchronized networks experience occasional
frame slips which cause momentary disrup­tions to channel data.
Description
Signaling Bits, Digits, Tones, Levels, Frequencies, Alarms, any channel - all channels.
The Slip Counting feature allows the clock rates of two T1 sources to be compared. Any differences are counted and accumulated. This allows users to determine if tariffed synchronization specifications are being met. A simultaneous display of the T1 line frequency leaves no doubt as to the source of trouble.
All 24 channels of signaling data can be displayed simultaneously. Select the bits to be displayed in both the East and West direction on two display screens.
The D400 has a built-in tone synthesizer. Any tone from 0 to 3990 Hz can be generated from +2.9 to
-60.0 dBm on all 24 voice channels. The receiver section can measure the frequency and level of tones over the same range.
Uses include: measuring loss, simulating modem carrier tones, disabling echo cancellers, responder tests.
In-Service testing of T1 or DLC, channel by channel, card by card, bit by bit, without service interruption.
Feature
In-Service Channel Access
Sending and Measuring Tones
A,B,C,D Signaling Bit Scan
Slip Counting and Line Frequency
The Basic D400 Digital Test System
Applications
This allows users to monitor active channels and compare signaling states in either direction. Provides immediate activity assessment.
Monitoring of voice or test tones in either one or both directions simultaneously is possible through the volume-controlled speaker or through a headset.
In addition to displaying frequency and level, the built-in tone receiver measures PCM offset on any channel.
In properly operating systems, PCM offset should be in the range of ±10 binary units for voice traffic. Excessive offset could indicate a faulty codec that could interfere with signal processing devices such as echo cancellers.
Allows direct assessment of channels at the user level.
Measurement of PCM Offset
Monitoring of Voice or Test Tones
Activates or deactivates loopback features of Channel Service Units (CSUs) or Network Interface Units (NI or Smart jacks). Intelligent repeaters and CSUs can be looped back through entering user programmable codes for fault isolation.
Fault isolation on a T1 line equipped with Smart Repeaters can be individually looped back through programmable codes.
Any user defined 8 bit code can be sent on any channel of a T1 span using this feature. The received channel can be displayed in a 1/0 code format.
To perform single-ended, out-of-service testing of a T1 circuit, it is usually neces­sary to loopback the far-end of a circuit. Channel Service Units (CSUs) contain built-in circuits that can detect a standard code sent over the T1 link. The CSU Loopback feature not only transmits the proper codes, but indicates when the CSU has attained loopback and reminds the user to disable the loopback when testing is complete.
This feature is useful for checking loopback and maintenance codes on data circuits, and in circuit identification.
CSU Loopback NI Loopback Smart Repeater Loopback
Sending and Receiving Channel Codes
Specifications for the D400 and D450
T1 Receiver
• 1.544 Mbps: ±130 pps
• Level range: ±3 V bipolar peak to peak ±75 mV
T1 Measurements
• T1 Line Frequency
• dBdsx
• dBm
• Vpp
• Frame Error Count
• BPV Count
• CRC-6 Error Count
• Slip Count
• Frame Error Rate
• BPV Rate
• CRC-6 Error Rate
• % Available Seconds
• % Errored Seconds
• % Error Free Seconds
• Available Seconds
• Errored Seconds
• Error Free Seconds
• Severely Errored Seconds
• Yellow Alarm
Channel Measurements
• Frequency range: 0 to 3990 Hz ±2 Hz
• Level range: +3.0 to -60.0 dBm
• Binary Coding: any 8-bit pattern
• PCM Offset: µ-255 law
• Signaling bits: 24 bit scan
Analog Input/Output
• 600 ohms, balanced, non-DC blocked +/-5%
T1 Source
• 1.544 Mbps ±5 ppm bipolar peak to peak
• AMI, B8ZS, BIT7 (bit 7 stuffing)
• SF, SF/CCIS, ESF, ESF/CCIS
• SLC Series 5, SLC 96
• Output Pulse ±3 volts bipolar peak to peak, -7.5 and
-15dB LBO
• Drop and Insert is fail-safe if AC power fails
Channel Synthesizer
• Frequency range: 0 to 3990 Hz, in 10 Hz steps
• Level range: +3.0 to –60.0 dBm, 0.1 dB steps
• Binary Coding: any 8-bit pattern
Status Indicators
T1 T3
• Frame Error (FRM) (FRM)
• Bipolar Violations (BPV) (BPV)
• CRC-6 Errors (CRC) (PAR)
• Yellow Alarm (ALM) (ALM)
• Loss of Signal (LOS) (LOS)
General
• Built-in Clock and Calendar
• Results Print Range: 1 min - 24 hrs.
• Results Reset Range: 1 min - 24 hrs.
• 3 factory-programmed set-ups
• 15 user-defined setups
• On-line HELP key
• 2 RS-232C ports configured from 300-9600 baud
• FDL access in/out rear panel 9-pin connector
Connectors
• T3: WECO Type 560A (440A compatible) jacks
• T1: WECO Type 310 or Bantam (miniature) jacks
• Analog: WECO Type 310 or Bantam jacks
• Headset: WECO Type 310 jacks
Environmental
• Operating Temperature Range: 0 - 40° C
• Relative Humidity: 0 - 90% non-condensing
• Storage Temperature: 0 - 70° C
Dimensions
D400 D450
• Width: 16.00 in (40.64 cm) 16.00 in (40.64cm)
• Height: 6.75 in (17.145 cm) 6.75 in (17.14cm)
• Length: 17.63 in (44.78 cm) 11.00 in (27.94cm)
• Weight: 22.84 lbs (10.36 kg) 14.91 lbs (6.76 kg)
Power Requirements
• 115 VAC, 50 - 60 Hz, 0.5 amp maximum
• Fuse : 1 amp slow blow
Standards
The D400 (where applicable) conforms to:
PUB 62411 ANSI T1.403-1989 PUB 54016 ANSI T1.503-1989 PUB 43801 ANSI T1.101-1987 CCITT G.821 ANSI T1.103-1987 TR-TSY-000008 ANSI T1.102-1987
ANSI T1.104-1988 ANSI T1.103a-1990
D400 OPTION CARDS:
Customize your D400 Digital Test System by inserting the option cards listed below. Insert one, two or all the cards into the D400 for complete digital testing, and there will still be room for future options ... making the D400 a smart, long term investment.
D401 BERT OPTION
• QRSS
• 3 in 24
• All ones
• 1 in 8,
• Programmable, and more...
D402 SIGNALING OPTION
• Draw dialtone
• Dial out
• Receive digits and analyze
• MF, DTMF, dial pulse
D403 DS3 DROP & INSERT OPTION
• In-service DS3 testing of DACs IV
• M13 multiplexer
• Embedded DS1s and DS0s
D404 DDS & FRACTIONAL T1 OPTION
• Latching and alternating loopback testing of DS0 and DS0 subrates
• Bit Error Rate Testing of DS0s
• MJU Control
• BERT of Fractional T1
• SRMU Testing (See insert for specifications)
D406 SLC 96 OPTION
• Emulates SLC 96 remote terminal
• Emulates central office terminal
• Provides ringing
• Tests individual channel cards
• In-service or out-of-service pre-cutover
• DDL Access
• Drop & Insert
• Modes I, II, III, and Series 5
• Full Channel Access.
D408 SLC 96 SIGNALING STATE ANALYZER OPTION CARD
• DDL Analysis of Call Originate
• DDL Analysis of Call Disconnect
• DDL Analysis of Forward Disconnect
• DDL Analysis for C-Field Timing
• DDL Analysis for Test Configuration
• DDL Signaling Bit Timing and more...
Ordering Information
D400 DIGITAL TEST SYSTEM BASE UNIT PART NUMBER
Select one of the following:
310 Jacks, AC Powered 30400010 Bantam Jacks, AC Powered 30400020 310 Jacks, -48V DC Powered 30400030 Bantam Jacks, -48V DC Powered 30400040
D450 DIGITAL TEST SYSTEM (2 EXPANSION SLOTS)
Select one of the following:
310 Jacks, AC Powered 30450010 Bantam Jacks, AC Powered 30450020 310 Jacks, -48V DC Powered 30450030 Bantam Jacks, -48V DC Powered 30450040
D400 OPTION CARDS
D401 Bit Error Rate Test (BERT) 30401010 D402 MF/DTMF/DP Signaling 30402010 D403 DS3 Drop and Insert * 30403010 D404 DDS & Fractional T1 30404010 D406 SLC 96® Derived Data Link 30406010 D408 SLC 96 Signaling State Analyzer 30408010 D424 Modem Option 20027273
* Two D403 Option Cards are required for
DS3 Bi-directional testing.
ACCESSORIES
D555 Non-Intrusive Probe 30555020 Thermal Printer 30031722 Printer Cable 04802233 Printer Paper 06001757 Serial Cable (null modem) M-F 30031422
F-F 30031431 Bantam Patch Cords (6 ft.) 30031350 310 Patch Cords (6 ft.) 30030316 Padded D400 Carrying Case 30031730 Padded D450 Carrying Case 30030771
CLEI CODES
D400 Digital Test System T1TDE058AA D450 Digital Test System T1TDE068AA
SLC 96 is a registered trademark with AT&T. 4/95 811-572-002
Wilcom
P.O. Box 508, Laconia, NH 03247
Technical Assistance: 800/343-5327
Customer Service: 800/222-1898, Fax: 603/524-3735
Loading...