Atec Agilent-N1627A - Manual

N1627A
Time Domain Reflectometer (TDR)
Specifications
GENERAL SPECIFICATIONS
The Agilent N1627A Time Domain Reflectometer
module provides highly accurate, general purpose
metallic cable TDR capability to the Service Advisor
family. It’s easily used for short and long distance
applications on any type of cable network including
twisted pair, coaxial, and LAN.
RELEVANT STANDARDS
UL 3111.1, UL 1950
89/336/EEC, 72/23/EEC
EN55011
CE
ISO 9001
TEST SIGNAL CHARACTERISTICS
Velocity of Propagation (VoP)
• Range and Resolution: User selectable from 0.010
to 0.999 in 0.001 or 0.01 steps
Test Signal Output: 3 to 25 Vpp
Pulse Widths
• Ten selectable widths from 5 nanoseconds to 5
microseconds
• Twisted Pair: 5, 10, 20, 50, 100, 200, 500, 1000,
2000, 5000 nsec
• Coaxial: 5, 10, 20, 50, 100, 200, 500, 1000 nsec
TEST CONNECTORS
Input Protection: ± 400 V DC and AC
Output Connectors
• Balanced: dual bantams
• Unbalanced: BNC
Output Impedance
• Balanced: 100 ohms
• Unbalanced: 50 Ohms
MEASUREMENT CHARACTERISTICS
Dynamic Range: Greater than 70 dB
Horizontal Resolution
• 0.026 m at VoP 0.999
• 0.039 m at VoP 0.660
Maximum Range: 20,000 m at any VoP, depending on
cable type and condition
Distance Accuracy: 0.1 %
± 200 ps ± VoP uncertainty
± cursor resolution
Cursor Resolution: 0.28% of selected range
Display Range: start and stop range independently
selectable
Vertical Sensitivity: >65 dB
Vertical Resolution:
• Up to 16 effective bits depending on test setup
• 241 pixels (vertical) displayed
Return Loss Measurement
• Auto dBRL: Two digit calculation at cursor set
Crosstalk Measurement: two digit calculation at
cursor set
Noise Filter: Adaptive noise filtering based on test
settings
RESULTS ANALYSIS
Measurement Modes
• Unbalanced: transmit/receive on single BNC port
• Balanced: single port transmit/receive; dual port
transmit/receive
Event Marking: three horizontal cursors; one vertical
cursors
Waveform Comparison: compare current and stored
waveform; display both waveforms and difference
Threshold Selection: available using vertical cursor
Horizontal Scale: meters, feet, or seconds
Magnifications: horizontal and vertical zoom
Compute Distances: to cursors, between cursors
Waveform Storage: 50 waveforms
Cable Characteristics Database
• Includes factory programmed cable characteris-
tics
• Provides for user entry of new cable types
Test Configuration Database
• Store up to 50 test configurations for instant
recall, plus expansion via PCMCIA card
• Clone test configurations for service organization
Display: (in Service Advisor tablet) 640 x 480 pixel
color VGA LCD with touchscreen. Backlighting with
contrast control
DATA AND FILE MANAGEMENT
• Maintenance: software field upgradeable using
companion PC
• Remote File Access: results data accessible
using companion PC
GENERAL
Power: (from Service Advisor Tablet)
• Battery portable with internal battery charger
• NiMH 10.8 Vdc smart battery with charge
indicator
• AC/DC power converter included
• Vehicle power converter available