SAT-2B PCM Channel Analyzer

Introductions and applications

PCM Channel Analyzer is a portable communication instrument with national advanced technology, and it is used for testing all parameters of voice channel, which is applicable for PCM machine, digital exchanger, carrier telephone terminal, customer dispatch exchange and testing based on VOIP equipment, especially for scientific research, production, engineering installation, acceptance and maintenance.

Key functions:

• Test Item: Test line level, frequency and attenuation frequency feature, level gain, crosstalk, idle channel noise, quantizing distortion, return loss, longitudinal balance loss.
• Sine-wave generator in 20Hz~4000Hz, -85dBm~+10dBm
• Precision Low frequency counters in 20Hz~20KHz
• Test range is -85dBm~+10dBm level meter
• Noise filter can choose 3KHz smooth, 15KHz smooth, telephone weighting and C-Message.
• Audio frequency monitor: Built-in speaker, it can monitor line voice.
• Automatic mode and manual mode: End to end and loop-back test;
• Built-in generator and receiver, the output interface and input interface are respectively with direct current loop feeding circuit and direct current loop holding circuit, not only it can measure E&M 2/4 line interface, but also it can measure FXO， FXS interfaces;
• Dial and hold function: It can provide DTMF、PULSE and MF dial mode with loop-back keeping function and ring function.
• Test result graphic display, compare with built-in ITU-T rec.;
• Automatically save 60 groups of test data and 9 groups of test setup;
• Measurement results can upload to PC, and take it for analyzing, filing and printing;
• Built-in RTC.
• Gig Screen LDC display: 320x240 lattice, long-life LED backlight.
• Built-in Rechargeable Battery
• Online updating for embedded software.

Analog signal generator

Frequency of sinusoidal signal

Range: 200 Hz ~ 4000 Hz

Resolution rate: 1 Hz.

Precision: ±0.01% of setting

Level of sinusoidal signal

Range: +10dBm0~ -65dBm0

Resolution rate: 1 dBm0

Precision: 4-wire: ±0.3dBm, 2-wire: ±0.5dBm

Relative level

Range: +10dBm0~ -20dBm0

Resolution rate: 0.1 dBr

Precision: ±0.1dBr

Output filter:

3K flat filter（3KHz flat）、15KHz flat filter（15KHz flat）、Psophometric (Telephone weighting) filter, C-Message noise filter, 1KHz bandpass filter and 4KHz low pass filter.

Output impedance feature

Output impedance: 600Ω, balance.

Return loss: ≥36dB（200Hz~3600Hz）

Balance: ≥46dB（200Hz~3600Hz）

Frequency feature of output port

Reference signal: 1020Hz/-10dBm0

Frequency range: 200Hz ~ 3600Hz

Precision (Frequency feature): 4wire ±0.3dB，2wire ±0.5dB

Crosstalk Test

Transmitter: 1020Hz（820Hz）/0dBm0 single-tone

Receiver:

Range: -90dBm~+10 dBm

Resolution rate: 1 dB

Precision: 1 dB

Filter: 1KHz（800Hz）bandpass

Noise Test

Range: ：-90～+10dBm0p

Resolution rate: 1dBm0p

Test error: ±1dB (10~ -80dBm0p)

±3dB(-80 ~ -90dBm0p)

Detector type: True RMS

Filter: 3KHz flat/ 15KHz flat/ Cmessage/Telephone weighting (0.41)

Test of quantization distortion

Reference signal: 1020Hz (820Hz)/0dBm0 ~ -45dBm0

Range: 10~50dB

Resolution rate: 1dB

Test error: ±1dB

Detector type: True RMS

Notch filter: >50 dB rejection (995 to 1025Hz)（795~825Hz）

Filter: 3KHz flat/ 15KHz flat/ Cmessage/ Telephone weighting (O.41)

Test of Return loss

Impedance: 600 ohms

Transmit signal: 0dBm0, 300Hz ~ 3400Hz

Range: 0 to 40dB

Error: ±1dB

longitudinal balance loss

Impedance: 600 ohms

Transmit signal: 0dBm0, 300Hz ~ 3400Hz

Range: 0 to 80dB

Error: ±1dB

Other parameters

LCD: 320x240 lattice LCD, LED backlight.

Monitor volume: Adjustment

Real time clock: Display method: S/M/H DD/MM/YY

RS232 connector: DB9 plug, The instrument connect with PC by direct line of serial port, connect with printer by cross line of serial port.

Printer (optional): uP32-TS (Eng), standard level serial port English-character printer, Line Width is 32 ASCII character.

Power supply

1) Power adapter: AC100V~240V, 50/60Hz, 9VDC/3A

2) Battery: #5 AA 4Ah/6V Ni-MH rechargeable battery and charging time is 12 hours.

Battery Standby time: 6 hours

Low voltage alarm: <5.8V

Low voltage shutdown: <5.5V

Working temperature: -10℃～+50℃

Storage temperature: -20℃～+60℃

Humidity: ≤90%

Low atmospheric pressure requirement: working under 2500m, air transport under 10000m

Dimension: L×W×H 220mm x 162mm x 48mm

Weight: 1100g