Atec TAS-100 Series - Manual (Page 8)

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 Signalling
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
Gain Distortion
Note: Gain Distortion characteristics are independent of group delay distortion characteristics. TAS
192 contains only the gain distortion characteristics listed in bold. Those TAS 192 gain distortion
characteristics have better frequency responses at the upper and lower edges of the voiceband than
the same gain distortion characteristics in other TAS 100 Series models.
Filter Type
Digital FIR
Gain Distortion
Characteristics
Flat, AD1-7, “V.FAST”/ ITU Cable-1, Cable-2, and Cable-3, JAPAN 1-
7, RITT (China), TR50150 (True Voice), TAS 3002, SEG 3002, Bell C1,
Bell C2, Bell C4, CCITT 1020, CCITT M1025, CCITT M1040, EIA A, EIA
B, EIA C, CONUS MD, CONUS MV, CONUS PD, CONUS PV, DOD NSB,
DOD NTB, EUROPEAN MD, EUROPEAN MV, EUROPEAN PD, EUROPEAN
PV, CCITT R.28
Group Delay Distortion
Note: Group Delay Distortion characteristics are independent of gain distortion characteristics. TAS
192 contains only the group delay distortion characteristics listed in bold. Those TAS 192 group delay
distortion characteristics have better frequency responses at the upper and lower edges of the voiceband
than the same group delay distortion characteristics in other TAS 100 Series models.
Filter Type
Digital IIR
Group Delay Distortion
Characteristics
Flat, EDD1, TAS-1, JAPAN 1-7, RITT 1-2 (China),
TAS 3002, SEG 3002, Bell C1, Bell C2, Bell C4, CCITT M1020, CCITT
M1025, EIA 1-5, CONUS MD, CONUS MV, CONUS PD, CONUS PV,
DOD NSB, DOD NTB, EUROPEAN MD, EUROPEAN MV, EUROPEAN PD,
EUROPEAN PV, CCITT R.28
Propagation Delay
Range 0 to 1599.875 msec.
Resolution 125
µ
sec.
Echo
Far Echo Attenuation Level -20.0 to +30.0 dB
Near Echo Attenuation Level -10.0 to +40.0 dB
Central Office Emulation
General
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 (*)
* The site A 2-wire switched and site B 2-wire switched central office operating modes are present only
in the TAS 192. These operating modes have been added to support connecting two TAS 192 units
together to simulate digital loop carrier (DLC) facilities and private branch exchange (PBX) environments.
Central Office Emulation - continued
Auxiliary Signalling Reverse battery
Nominal Input Impedance 600 ohms, ±30 ohms
Hybrid Balance Impedance 604 ohms, ±6 ohms or external
Loop Current Source
Range 8 to 120 mA in 8 mA steps
Polarity tip to ring, ring to tip
Ring Generator
Level 1 to 100 Vrms (open circuit), 1V steps
Frequency 14.0 to 75.0 Hz
Cadence 1-3 ON intervals, 1-3 OFF intervals
Ring ON/OFF Intervals 0 to 10,000 msec.
Source Impedance 2100 ohms typical
Network Signalling Tones
Tones Supported primary and secondary dial tones, busy, audible ringing
Dial Tone/Audible
Ring Cadence
1-3 ON intervals, 1-3 OFF intervals
Busy Cadence 1 ON intervals, 1 OFF interval
ON/OFF Intervals 0 to 10,000 msec.
Tone Frequency 100.0 to 720.0 Hz
Touch Tone Detection
Detection Range 0.0 to -25.0 dBrn
Max. Invalid Tone Duration 20.0 msec.
Max. Interdigit Pause 40.0 msec.
Max. Dropout 20.0 msec.
Dial Pulse Detection
Make/Break Interval Range 10 to 90 msec.
Min. Interdigit Pause 300 msec.
Call Progress Parameters
Max. Digits in
Telephone Number
15
Switching Delay 1 to 25,000 msec.
Off Hook Delay 2 to 25,000 msec.
On Hook Delay 1 to 255 msec.
Disconnect Signalling
Signal Options no signal, busy tone, dial tone
Delay Before Signal 1 to 30,000 msec. in 1 msec. steps
Signal Level Measurements
Range +10.0 to -50.0 dBrn
Resolution 0.1 dB
Accuracy ±0.4 dBm
Measurement Points input and output of each transmission channel
Control Interfaces
Interfaces Provided RS-232 (DTE) and IEEE-488 (GPIB)
Serial Control Port Parameters
Bit Rates 1200, 2400, 4800, 9600 bps
Format asynchronous
Bits/Char 7 or 8
Parity even, odd, none
Stop Bits 1, 1.5, 2
AC Line
Voltage 115/ 230 VAC (selectable) +10%, -13%
Frequency 48 to 63 Hz
Max. Power Dissipation 100 Watts
Operating Environment
Temperature 0 to 50 o C (32 to 122 o F)
Humidity 10 to 90%, non-condensing
Dimensions and Weight
Height 5.22 inches
Width 17.08 inches
Depth 14.44 inches
Weight 25 pounds
TAS 100 Series Telephone Network Emulators
Spirent Communications of Eatontown, LP (DBA TAS)
541 Industrial Way West, Eatontown, NJ 07724, U.S.A.
Phone: (732) 544-8700, Fax: (732) 544-8347, www.spirentcom.com
Spirent Communications is a trademark and service mark of Spirent plc. All rights reserved
Specifications are subject to change without notice, Printed In U.S.A., 12/00 v.3
TAS 100 Series Specifications