Model Number	GAO 2038
Brand Name	GAO

Overview – PCM Channel Analyzer (GAO2038)

This advanced, portable PCM Channel Analyzer integrates an analog signal generator/receiver, a selective level meter, a BER Tester, a signaling generator/receiver, a ring generator/identifier, a Dialer, a DC loop circuit (ICT, OGT), a balanced bridge and a Reflecting Bridge all into a single instrument. It has functions for measuring PCM voice encoding/decoding performance characteristics and is widely used to measure PCM devices, digital switches, carrier wave communication devices and VoIP devices.

The PCM analyzer offers many practical functions. It supports equal step sequence of frequency spots or customized spots where the number of spots is selectable. With remote control via USB or Ethernet interface, users can develop and design voice channel measurement/control systems under a variety of different conditions. The analyzer also compares the measured results with built-in standard ITU-T tolerance masks and evaluates whether the results indicate pass or fail. Test results can be uploaded to a PC where they can be further viewed, analyzed, assembled, filed and printed via Test Manager Pro software.

Key Features – PCM Channel Analyzer (GAO2038)

• Integrated with tone oscillator, selective frequency meter, BER tester and Call Generation, more PCM channel characteristics can be measured simultaneously
• 5.7 inches 640 x 480 high-resolution color LCD screen
• Flexible control modes, supports touch operation, key-stroke operation and expanded mouse operation
• Convenient Windows style, easy to operate
• Built-in call set-up circuit can set up testing channel directly by dialing on the tester without the help of other telephone
• Built-in generator and receiver, analog input and output interfaces are separately with ICT and OGT. Interfaces can be directly tested, including 2/4W E&M, MDR, LGE, FXO, LGS and FXS
• Built-in balanced bridge and reflecting bridge, return loss, longitudinal conversion loss and longitudinal conversion transfer loss can be measured by one tester
• Built-in test mode can be defined by clients, efficiently satisfying testing standard definition of different products
• Remote control signaling group is available, so as to secondarily develop under different conditions by clients
• Embedded software can be upgraded online and protect the client’s investment

Basic Function – PCM Channel Analyzer (GAO2038)

• A-A voice channel characteristics testing
• Variation of gain with frequency
• Variation of gain with input level
• Total distortion including quantizing distortion
• Idle channel noise
• Crosstalk
• Return loss
• Longitudinal conversion loss
• Longitudinal conversion transfer loss
• Auto and manual mode available, on the auto mode, all or one or several of the above performance characteristics can be selected to measure
• Supports test of frequency spots sequence of equal step and customized frequency spots, and the number of spots is optional
• Supports selective frequency measuring on all frequency spot
• Results are showed graphically, and can be compared with the built-in reference module to evaluate whether it passes or fails
• Call set-up: support on-hook, off-hook, dialing, ringing, and ringing supervise
• Perfect indication of working state and alarm
• Large storage capacity of results and measuring configurations, up to 100 groups
• Available in remote control via USB and Ethernet interface, to meet the need of different control modes
• Results can be uploaded to PC, so it can  be analyzed, assembled, filed and printed via TestManager Pro software

Technical Specifications – PCM Channel Analyzer (GAO2038)

• Analog Interface
  Generator
  Frequency Range: 200Hz to 3600Hz, Step: 1Hz
  Level: 5dBm0 to -60dBm0, Step: 0.1dB
  Variation of Frequency Response: ±0.1dB
  Receiver
  Frequency Range: 200Hz to 3600Hz
  Level Range: 5dBm0 to -60dBm0
  Error Range: ±0.1dB
  Level Range:-60dBm0 to -90dBm0
  Error Range: ±0.5dB
  Interface Impedance
  Balanced: 600, 200+560//0.1uu, 200+680//0.1uF, customized Impedances
  0Ω (output) and high impedance (input)
  Unbalanced: 600
  Interface Type
  FXO(LGE), FXS(LGS), 2/4W E&M, MDR
  DC Loop
  ICT: Dynamic impedance>100KΩ
  Loop Constant Current = 22mA
  OGT: Dynamic impedance >100KΩ,
  Loop Current: max. 60mA
• Digital Interface
  Impedance
  75Ω (Unbalanced), 120Ω(Balanced)
  Output Code
  HDB3, AMI
  Coding Method
  A-rule, μ-rule
  Frame Type
  PCM30/30CRC, PCM31/31CRC
  Tx Clock Source
  Internal, Interface
  E1 Error Testing
  Testing Pattern
  220-1,215-1,211-1, 29-1, 27-1, 1111, 0000, 1010, 32bit programmable
  Basic Analysis
  Error, EFS, Current error ratio, Average error ratio
  G.821Analysis
  ES, DM, SES, Unavailability
• Others
  TestManager Pro Software
  Support WIN98/NT/ME/2000/XP
  Power Supply
  AC 110V/220V±10%，50/60 Hz
  Dimension
  293mm x 195mm x 56mm(L x W x H)
  Working Temperature
  0℃ to 50℃
  Storage Temperature
  -20℃ to 70℃
  Humidity
  5% to 95% non-condensing
  Weight
  Approx. 1.8kg
  Ordering Information
  GAO2038   PCM Channel Analyzer
  Option A-D, D-A, D-D testing, E1 Error Testing

For any sales inquires please contact:


1-877 585-9555 ext. 601 - Toll Free (USA& Canada)

1-416 292-0038 ext. 601 - All Other Areas