Telephone Network Emulator
|
|
TAS 151 Telephone Network Emulator
TAS 151 provides the mix of critical features
required for thorough evaluation in a compact,
easy-to-use package. Designers can dramatically reduce development testing time and costs.
Manufacturers can detect and stop defective products
before they reach the field. Product evaluators can select between data communications
products based on real-life performance, not just
the specification sheet.
TAS 100 Series Telephone Network Emulators
are designed to work with other TAS products to
provide complete solutions for testing modems, fax
machines, and a host of other data communications equipment. The TAS 100GT Series Automatic Modem
Test Systems provide a comprehensive, automatic
solution for testing and evaluating virtually all
types of modems, including V.34 and V.34+.
| Impairments Generator |
| Input Level
Range |
+7.0 dBm to -23.0 dBm |
| Output Level
Range |
0.0 dBm to -50.0
dBm |
| PCM |
| |
Number of Links |
0-3 |
|
Sampling Rate |
8.0 kHz |
|
Sample Coding |
none, mu-law, or A-law |
|
Position |
before or after analog
impairments |
| Robbed Bit
Signaling |
|
Bits Affected |
least significant bit of
every 6th PCM sample |
|
Pattern |
alternating 1/0 |
| White Noise |
|
|
Level Calibration
Choices |
C-message, 3.0 kHz flat,
psophometric |
|
Level Range |
20.0 dBrn to 90.0 dBrn |
| Intermodulation
Distortion |
|
2nd Order Range |
20 dB to 55 dB below
signal |
|
3rd Order Range |
20 dB to 55 dB below
signal |
|
Type |
expansive or compressive |
| Frequency
Shift |
|
Offset |
-19.75 to 19.75 Hz |
| Phase Jitter |
|
Level Range |
0.0 to 45.0 degrees p-p |
|
Frequency Range |
0.0 to 300.0 Hz |
| Gain Hits |
|
Level Range |
-20.0 to +6.0 dB |
|
Risetime Range |
0.2 to 990 msec. |
|
Duration Range |
1.0 to 20000 msec. |
|
Interval Range |
0.1 to 320.0 sec. |
| Phase Hits |
|
Level Range |
0.0 to 90.0 degrees |
|
Risetime Range |
0.2 to 990 msec. |
|
Duration Range |
1.0 to 20000 msec. |
|
Interval Range |
0.1 to 320.0 sec. |
| Impulse
Noise |
|
Type |
IEEE Standard |
|
Level Range |
0.0 to 55.0 dB below
signal |
|
Interval Range |
0.1 to 320.0 sec. |
|
Calibration |
C-notched |
| Amplitude
Jitter |
|
Level Range |
0.0 to 98.0% |
|
Frequency Range |
0.0 to 300.0 Hz |
| Single
Frequency Interference |
|
Frequency Range |
0.0 to 3400.0 Hz |
|
Level Range |
0.0 to 50.0 dB below
signal output level |
| General Central Office
Emulation |
|
Operating Modes |
2-wire switched (loop
start), 2-wire auto-switched, 2-wire private line 4-wire private
line, 4-wire private/2-wire switched, site A 2-wire switched (*), site B 2-wire switched (*) |
|
