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TSPC (Telephone Signal Processing Card)
Technical Specifications
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The
Telephone Signal Processing Card (TSPC) is a PC
plug-in card that emulates a standard Central
Office or PBX telephone line. Utilizing a
powerful DSP based architecture it can be used in
various applications such a Caller ID testing,
signaling analysis, network tone generation, and
CO emulation. The DSP approach allows for
complete control over all signal generation and
analysis. New measurement algorithms, new
standards, and new features can be downloaded
from the PC to the TSPC by simply using upgraded
software. This allows for an easy upgrade path in
the future without the requirement of new
hardware.
In addition to the DSP signal generation and
analysis engine, the TSPC contains a subscriber
line interface with programmable line voltage,
line impedance, loop current, and line polarity.
A ringing generator produces a low distortion
output over a broad frequency range. The flat
frequency response allows for accurate generation
and analysis of test signals for various
applications. Two external BNC connectors allows
for signal loop-though, injection, and
monitoring.
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Specifications:
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Tone Generator(s) |
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Output Level |
-70
dBm to +6 dBm +/- 0.3 dBm |
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Frequency Range * |
50
Hz to 10 kHz |
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Flatness |
+/-
0.3 dB |
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THD+N |
0.09%
C-message weighted |
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Harmonic Distortion |
>
65 dBc |
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Frequency Accuracy |
0.015%
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FSK Modulator * |
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Mark & Space Level |
-60
dBm to 0 dBm +/- 0.3 dBm |
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Flatness |
+/-
0.1 dB |
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Mark & Space Frequency |
100
Hz to 5 kHz |
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Frequency Accuracy |
0.015
% |
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Baud Rate |
100
Hz to 5 kHz |
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Baud Rate Accuracy |
0.015
%
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Noise Generator * |
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Output Level |
-60
dBm to -8 dBm +/- 0.3 dB
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Telephone Line |
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Output Impedance |
600
or 900 ohms +/- 2 %, or |
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Complex
Zr +/- 3 % |
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Line Voltage |
20 V
to 52 V +/- 1 V |
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Loop Current |
20
mA to 40 mA +/- 10%
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Ring Generator * |
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Output Level |
0 to
80 Vrms |
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Frequency Range * |
10
Hz to 600 Hz |
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Flatness |
+/-
0.2 dB |
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THD+N |
0.1
% (sine wave) |
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Wave Shape * |
Sine,
Square, Triangle |
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Frequency Accuracy |
0.015
% |
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Cadence |
Single,
Double, Triple Ring |
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Timing Accuracy * |
+/-
2 msec +/- 1 cycle
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RMS Level Meter |
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Level Accuracy |
+/-
0.2 dB |
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Frequency Range |
10
Hz to 10 kHz |
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Flatness 100 Hz to 5 kHz |
+/-
0.2 dB |
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Maximum Input |
+ 14
dBm |
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Residual Noise |
<
-70 dBm (C-message weighted)
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ACK / DTMF Analyzer * |
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Level Accuracy |
+/-
0.2 dB |
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Maximum Input |
+ 6
dBm per tone |
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Minimum Input |
- 20
dBm |
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Frequency Resolution |
0.1
Hz
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External Audio I/O |
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Maximum I/O Level |
6
Vp-p |
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Output Impedance |
600
ohm +/- 5% |
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Input Impedance |
100
kohm +/- 5% |
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I/O Level Accuracy |
+/-
0.2 dB |
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Residual Noise |
<
-70 dBV (C-message weighted)
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External Digital I/O |
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Output A & B |
VOH
min 3.5 V @ 5 mA |
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VOL
max 0.5 V @ 5 mA |
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Input A & B |
VIH
min 4.0 V |
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VIL
max 2.0 V |
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Input A & B Impedance |
10
kohm to ground |
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Max. +5V Current Draw |
250
mA (internally fused)
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* Note:
Specifications marked with an * are software
specific and may not be applicable depending on
the usage.
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Packaging:
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The TSPC forms the hardware component to
a number of different products. By combining
different software packages with the TSPC, it can
take on different characteristics and
functionality. The products that use the TSPC
are: |
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AI-150 |
Caller ID
Signal Simulator |
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Software: CID1500,
CID750D, CID950N |
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AI-330 |
Telephone
Signal Analyzer & Generator |
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Software: TSA3300 |
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AI-240 |
CAS Detector
Testing System |
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Software: CAS2200 |
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AI-410 |
Windows DLL
Low Level Drivers |
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Software: DDP1100,
Win 3.1,95/98, NT Drivers |
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AI-120 |
Production
Caller ID Signal Simulator |
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Software: CID1500,
CID750D, CID950N
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