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The HP 37701A performs bit-error and signal measurements on T1 circuits in central offices, at outside locations, and on the users' premises. Built-in CSU emulation allows circuits to be proven before user equipment is connected. Autoconfigure, "trouble scan," and prestored setups, together with clear simple controls, make the tester easy to use. The HP 37701A Tl tester is easily upgraded to the HP 37711A. Full transmit and receive capability. Receiver Range: + 6 to - 36 dB DSX with equalization. Framing: D4, ESF, SLC-96. Line Codes: AMI, B8ZS. Test Patterns: 2^23, 2^20, 2^15 PRBS; QRSS, 3 in 24, 1:1, 1:7, 55 octet, 1024-bit word. Measurements: Error performance based on BPVs, logic, frame, and pattern errors; frequency, pattern slips, simplex current, level, round trip delay, pulse shape, clock slips, and channel mapping. Channel VF output including internal loudspeaker. RS-232 remote control and printer interface (HPIB available).
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