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Analysis (T1/E1/T3/E3/OC-3/OC-12/STM-1/STM-4)
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Hand Portable Test Instruments
Overview
The GL’s LinkSim™ simulates a variety of communications links, inserting delays and inserting errors such that
the user can determine what effects these impairments will have on their systems.
The LinkSim™ includes six pairs of interfaces - RS232, RS422/RS530, V.35, X.21, HSSI and T1 E1. It can introduce
propagation delays in either or both directions. Propagation delays can be up to 1.999 seconds per direction for speeds
up to 2.048 Mbps and up to 500 milliseconds for speeds from 8.192M to 50 Mbps. The LinkSim™ can inject logic,
ones, zeros, timing slips, bit, burst, frame, BPV, CRC, FDL, signaling, block, C-Bit and P-Bit errors in either or both directions.
Main Features
- Simulates a variety of communications facilities
- Supports T1 E1, RS232, V.35, RS422/RS530, X.21, HSSI
- Supports 78 data rates from 1,200 to 50M bps
- Inserts delays up to 1.999 second in each direction
- Inserts errors and timing slips in each direction
- Delays, errors and speeds can be different in each direction
- All operating parameters, including interfaces, speeds, delays, errors and control signals are illustrated on a single
screen
- Parameters are selected by scrolling through values stored in the LinkSim™
Applications
- Testing protocols and error correction techniques
- Checking new equipment prior to field installation
- Measuring performance and reliability in various operating environments
Specifications
Speed
| Base Unit Speed |
78 standard speeds from 1,200 bps to 8.192 Mbps |
Interfaces (two each)
| RS 232 |
DB25P 25-pin female connector |
| RS 530/RS 422 |
DB25P 25-pin female connector |
| V.35 |
34-pin Winchester female connector |
| X.21 |
DB15P 15 pin female connector |
| T-1 and E-1 (G.703) |
RJ48C 8 position modular in parallel with bantam and dual BNCs. |
| HSSI |
50 pin HSSI connectors |
Miscellaneous
| Propagation Delay |
Up to 1.999 second per direction for speeds up to 2.048 Mbps
Up to 0.5 seconds (500 ms) per direction for speeds to 50 Mbps
Delay is selectable in 1 millisecond increments |
| RTS/CTS Delays |
Up to 999 millisecs in 1 millisecond increments |
| Errors |
Logic (bit) errors, Ones, Zeros, Burst errors, Block errors,
Framing errors, BPVs, CRCs, C-Bit errors, P-Bit errors,
Error seconds and Slips |
| Error Frequency |
1x10e1 to 1x10e12 bits, Random Secs, Manual
Gap up to 99999999 bits, Gap up to 99999999 milliseconds
9999 Blocks |
| Timing |
Internal, external and locked
External clock – TTL level |
| Control Signals |
Request To Send (RTS), Clear To Send (CTS)
Data Set Ready (DSR), Carrier Detect (CD)
Data Terminal Ready (DTR) |
| Power |
90 - 230V AC
50 to 60 Hz
7.2 watts 25 BTU/hr |
Physical Dimensions
| Dimension |
3.5" (8.9 cm) h x 10" (25.4 cm) w x 12" (30.5 cm) d |
| Weight |
12 lbs (5.5 kg) |
Environmental
| Operating Temperature |
0 to 50° C, 32 to 122° F |
| Relative Humidity |
0 to 95% non-condensing |
Specifications subject to change without notice.
Application Notes
Buyer's Guide
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