PRL-422NECL/RS Diagrams

Mini Modular Instruments > Logic Level Translators > PRL-422 > Diagrams

Fig. 1 PRL-422NECL Dual Ch. NECL to RS-422 Translator

Fig.2 PRL-422RS Dual Ch. RS-422 to NECL Translator

*Since the high frequency signals to and from the 124 Ω I/O ports can not be easily measured, the 124 Ω I/O ports of these adapters were first cascaded using shielded twisted pair cables, Trompeter P/N PCGOW10PCG-36 or equivalent. Input signals were applied to the 50 Ω inputs of the PRL-422NECL, and outputs of the PRL-422RS were terminated into 50 Ω /-2 V, using the PRL-550NQ4X, four-channel ECL Terminator, connected to a 50 Ω input sampling oscilloscope.

Notes:

1. The 50 Ω output rise and fall times were measured with both the Q and Q outputs terminated into 50 Ω /-2 V. If one output is not terminated, both the rise and fall times will increase by approximately 15%, and output waveform degradation will occur.

2. f_MAX is measured using the differential input mode(switch up). The differential outputs are first divided by four, using the PRL-255, ÷2 and ÷4 frequency divider module, and then measured using the PRL-550NQ4X, four channel ECL Terminator, connected to a sampling 'scope.

3. Trompeter P/N CBBJR79.

4. Trompeter P/N PCGOW10PCG-36

PRL-422 | Detail | Specifications | Datasheet