Equipment information
Telecommunications Techniques Corporation T-Berd 107 Analyzer
Manufacturer:
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Model:
T-Berd 107
Date:
1990
Category:
Group:
Description:
Carrier Analyzer
Information
The T-BERD 107 T-Carrier Analyzer is a hand-held, battery or
AC-operated Test Set for T1 and TIC circuits. Packaged Lq in
a compact case, the T-BERD 107 's operating panel features
test mode selection switches, alarm and signal status LED
indicators, and a liquid crystal display with backlighting
capability. The T-BERD 107 also contains a printer port for
providing hard copy test results.
Two T-BERD 107 options are available: a T1 Channel Monitor
Option and a TI/TIC Transmitter Option. The T1 Channel
Monitor Option provides audio and data monitoring of a
user-selected channel. The TfTC Transmitter Option
provides the ability to transmit framed and unframed test
patterns, as well as loop smart jacks and CSUs. Both options
are field-installable in the T-BERD 107 lid. The T1 Channel
Monitor Option and the T1/T1C Transmitter Option are
discussed in detail in Appendices A and B, respectively.
The T-BERD 107 is designed for use at any T-Carrier access
point, whether at a central office. DSX patch bay, customer
service unit, or a repeater. It monitors T1 or TIC circuits,
verifies error and alarm conditions, measures signal
quality, and identifies equipment failures. The T-BERD 107
can perform both in-service and out-of-service testing, and
can be set for either continuous or timed tests.
The T-BERD 107 offers these key features and characteristics:
• Automatic synchronization to D4. ESF. and SLC*-96 framing
patterns.
• Automatic recognition of and synchronization to the
quasirandom signal source (QRSS), the 3 IN 24, 1:7. and ALL
ONES patterns.
• Extended Receiver Range that allows testing of T1 signals
at any point along a span line, including low-level signals
(down to -35 dB) at repeater inputs.
• An optional T1/T1C Transmitter for performing out-of
service testing.
• Printer port and buffer for storing and printing hard copy
test results.
• An optional T1 Channel Monitor to test individual DSO
channels within the T1 frame.
• Signal analysis with signal level and recovered clock
frequency measurements.
Manual Type:
User Manual
Pages:
96
Size:
2.64 Mbytes (2766076 Bytes)
Language:
english
Revision:
A
Manual-ID:
ML11086-02
Date:
1990 09 01
Quality:
Scanned document, all readable.
Upload date:
2017 01 10
MD5:
d65a904dc029f891003b58420f188e5d
Downloads:
512
Information
SECTION 1 GENERAL ... 1-1
SECTION 2 COMPOSITION AND SPECIFICATIONS
2.1 Composition ... 2-1
2.2 Specifications ... 2-2
2.3 Peripheral Devices and Accessories ... 2-6
2.3.1 MH680A/B Tracking Generator ... 2-6
2.3.2 MH648A Preamplifier ... 2-7
2.3.3 Artificial Mains Network ... 2-8
2.3.4 High Impedance Probe ... 2-8
2.3.5 Battery Pack and DC-DC Converter ... 2-9
2.3.6 Frequency Counter ... 2-9
2.3.7 Antennas ... 2-10
2.3.8 Packet III Personal Technical Computer .. 2-11
2.3.9 Accessories ... 2-12
SECTION 3 OPERATION
3.1 Handling Precautions ... 3-1
3.1.1 Power supply ... 3-1
3.1.2 Installation site
environmental conditions ... 3-1
3.1.3 Maximum input level ... 3-2
3.2 Front and Rear Panel Controls ... 3-3
3.3 Description of Controls ... 3-7
3.3.1 FREQUENCY ... 3-7
(1) COARSE-FINE dial ... 3-7
(2) START FREQ and CENTER FREQ ... 3-8
(3) FREQ ZERO ADJ ... 3-8
3.3.2 MODE ... 3-9
(1) Function ... 3-9
(2) DATA ... 3-9
*
(3) REFERENCE LEVEL ... 3-9
(4) MARKER LEVEL ... 3-10
(5) FREQ SPAN ... 3-11
(6) INPUT ATTEN ... 3-12
(7) RBW ... 3-13
(8) SWEEP TIME ... 3-13
3.3.3 COUPLED TO SPAN ... 3-14
3.3.4 COUPLED TO REF ... 3-16
3.3.5 VIDEO Filter ... 3-17
3.3.6 SCALE ... 3-18
3.3.7 TRIG ... 3-19
3.3.8 DISPLAY UNCAL ... 3-20
3.3.9 GAIN ADJ ... 3-20
3.3.10 INTENSITY ... 3-21
3.3.11 GP-IB ... 3-21
3.3.12 REFERENCE LEVEL (rear panel) ... 3-22
3.4 Measurement ... 3-23
3.4.1 Measurement preparation ... 3-23
(1) Power-ON ... 3-23
(2) Gain calibration ... 3-24
(3) Frequency display
zero calibration ... 3-25
(4) TRACE ROTATION and
V. POSITION adjustments ... 3-25
3.4.2 Fundamental measurement ... 3-26
3.4.3 Measurement with improved
frequency accuracy ... 3-27
(1) Measurement with improved frequency accuracy using CAL OUT signal ... 3-27
(2) Measurement with improved frequency accuracy using MH680B and
frequency Counter ... 3-28
3.4.4 Spurious measurement ... 3-32
(1) Harmonics measurement with
fast operation ... 3-32
(2) Inter modulation product
measurement ... 3-34
(3) Random spurious signal measurement . 3-34
(4) Spectrum purity measurement ... 3-34
3.4.5 Modulated wave measurement ... 3-35
(1) Procedure ... 3-35
(2) AM wave measurement ... 3-35
(3) AM wave measurement when
modulation frequency is low ... 3-37
(4) FM wave measurement ... 3-3 8
(5) PAM wave measurement ... 3-39
(6) Audio modulation signal
monitoring ... 3-40
3.4.6 Field strength measurement ... 3-42
(1) Measurement in dBU units ... 3-43
(2) Direct reading measurement of field strength using
specified antenna ... 3-43
(3) Antenna coefficient display ... 3-44
3.4.7 Radio interference (EMI) measurement ... 3-44
3.4.8 Measurement using GP-IB ... 3-44
SECTION 4 DAILY MAINTENANCE AND STORAGE
4.1 Daily Maintenance ... 4-1
4.2 Storage ... 4-1
4.2.1 Storage precautions ... 4-1
4.2.2 Recommended storage conditions ... 4-2
SECTION 5 PRINCIPLES OF OPERATION
5.1 Introduction ... 5-1
5.2 Frequency Conversion Circuit ... 5-2
5.3 IF Circuit ... 5-2
5.4 Detection and Video Circuits ... 5-3
5.5 Sawtooth Generator and
Local Oscillator Control Circuit ... 5-3
5.6 Controller ... 5-4
SECTION 6 PERFORMANCE TEST
6.1 Introduction ... 6-1
6.2 Equipment Required for Performance Test ... 6-2
6.3 Preliminary Operations ... 6-5
6.4 Performance Test ... 6-5
6.4.1 CAL Output ... 6-5
6.4.2 Frequency display accuracy ... 6-8
6.4.3 Frequency span accuracy ... 6-11
6.4.4 Resolution bandwidth selectivity ... 6-13
6.4.5 Frequency stability ... 6-17
6.4.6 Residual FM ... 6-18
6.4.7 Sideband noise ... 6-21
6.4.8 LOG scale linearity ... 6-23
6.4.9 Reference level accuracy ... 6-25
6.4.10 Frequency response ... 6-27
6.4.11 Average noise level ... 6-30
6.4.12 2nd and 3rd harmonics distortion ... 6-31
6.4.13 Residual spurious response ... 6-34
6.4.14 Resolution bandwidth gain variation ... 6-35
6.4.15 RF input impedance (terminal) ... 6-37
6.4.16 Power consumption ... 6-41
6.4.17 Data sheets ... 6-42