The HP 3787B Digital Data Test Set is a Bit Error Rate Tester (BERT) designed for use on T1 leased, Digital Data Systems (DDS), 56kbit/s switched and Packet Switched services transmission line and multiplexing equipment.
Digital data are sold with a guaranteed Quality-of-Service (eg DDS circuits offer > 99.5% Error Free Seconds in a 24hr period and 99.95% availability). To maintain this high quality of service, Service Providers need test equipment that will provide in-service network monitoring and fast out-of-service testing.
The HP 3787B has a comprehensive range of in-service features which maximizes circuit availability by detecting circuit deteriorations and intermittents, before the seriously affect the service.
The HP 3787B also provides comprehensive out-of-service features (eg logic (binary) test patterns, Frame Slips, full range of T1/DDS loopback codes, etc) which are used to provide qualitative results for circuit troubleshooting and end-to-end test results which relate to actual in-service performance.

SPECIFICATIONS:

• DSO Operating Frequency: 64 kbit/s
• DS1 Operating Frequency: 1.544 Mbit/s
• DS1C Operating Frequency: 3.152 Mbit/s
• Framing: DS1 DS1C and DS0B
• Line Code: B8ZS AMI
• Error Analysis: % Availability % Unavailability % Severly Errored Seconds % Error Seconds % Degraded Minutes Count Consecutive SES Count SES Count ES Count Deg Min
• Other Included Measurements: Alarm Seconds Frame Slips Protocol Analyzer Interface DS1/DS1C Signal Voltage DS0 Bit Monitor Signaling Bits
  
  This unit comes with:
• Option 001: DS1 Jitter Measurement
• Option 002: DC Capability

Additional specifications available upon request "