The Wandel & Goltermann PCM-4 is a industry-standard PCM Channel Measuring Set designed for comprehensive testing, alignment, and troubleshooting of voiceband PCM systems, channel banks, primary multiplexers, and digital switching equipment according to ITU-T (CCITT) recommendations.
Specifications
General
| Parameter | Value |
|---|---|
| Display | Monochrome CRT screen with graphical trace and digital readout |
Measurement Modes & Functions
| Parameter | Value |
|---|---|
| Measurement Modes | VF to VF, VF to PCM, PCM to VF, PCM to PCM |
| Primary Measurement Functions | Level vs Frequency, Gain Tracking, Quantizing Distortion, Total Distortion, Group Delay Distortion, Crosstalk, Return Loss, Idle Channel Noise, Out-of-Band Noise |
| Signaling Testing Capabilities | CAS (Channel Associated Signaling) channel status display and simulation |
PCM & Digital Interface Specifications
| Parameter | Value |
|---|---|
| Speech Encoding Laws | ITU-T G.711 A-law and µ-law (selectable) |
Technology
PCM Voiceband & Digital Transmission Testing
Applications
Telecommunications PCM channel bank testing, multiplexer alignment, VF to PCM transceiving measurements, digital switch verification