The SHF BPG 44 E pattern generator is a versatile test instrument for high bitrate PCM- and SDHsystems as well as for components used within high speed communication systems. The instrument generates true CCITT¿type pseudo random bit sequences (PRBS) of various lengths and four additional user programmable patterns.
      In combination with the SHF EA 44 error analyzer, the generator can be used to build up a bit error rate test system performing CCITT type transmission tests.
      An output signal voltage of more than 2.5 V at 44 GBit/s enables power splitting for driving multiple subsequent circuits. The output drivers are tuned for optimum pulse performance at the end of two 0.5 m low loss, high precision cables, which are supplied with the instrument. The output signal bitrate can either be controlled by a low jitter internal crystal clock oscillator on 6 selected CCITT
bitrates or by an external generator. The required external clock frequency is half of the bitrate, i.e. 22 GHz produces 44 GBit/s output signals. All functions can be remote controlled by GPIB.

Features:

• CCITT conforming PRBS patterns 27 -1, 215 -1, 223 -1, 231-1
• Four 256 bit programmable patterns in four different registers
•  Three different error injection modes (front panel, external trigger input and GPIB control)
•  Pattern inversion by push button
•  Complementary data outputs @ 44 GBit/s, ≥ 2.5 Vamp which can be individually disabled
•  Low risetime and low overshoot of output signals
•  Ruggedized 1.85 mm male output connectors for the data outputs
•  Two high precision, very low loss 50 Ω output cables are included¿all signal parameter specifications refer to the output of these cables.
• External master clock input at half of the bitrate
•  Clock output at Bitrate/n; n=2,4,16,64
•  Low noise, low jitter advanced circuit for bit synchronized trigger output
•  Burst-Mode gating capability
•  External GPIB control

Options:

• Option 01: Low noise, high stability internal crystal clock generator
•  Option 02: Eight complementary additional outputs (Data and Data) at 11GBit/s
•  Option LJ: Low jitter version
•  Adjustable output levels available on request