Analizador de canales PCM SAT-2B

Introductions and applications

El analizador de canales PCM es un instrumento de comunicación portátil con tecnología avanzada nacional, y se utiliza para probar todos los parámetros del canal de voz, lo cual es aplicable a equipos PCM, centrales digitales, terminales telefónicos de portadora, centrales de despacho de clientes y pruebas basadas en equipos VOIP, especialmente para investigación científica, producción, instalación de ingeniería, aceptación y mantenimiento.

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