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Q1: How do I drive a differential 124 Ω load connected to a Triax connector? A1: If the load is associated with an ECL circuit, the PRL-432, should be used. The PRL-432 is a dual channel differential 50 Ω ECL SMA input to 124 Ω ECL Triax output converter. If the load is ground-referenced, the PRL-422NECL should be used. Q2:
How do I convert 124 Ω
RS-422 to ECL/PECL and back? A2: The PRL-422RS, dual channel converter, converts 124 Ω Triax RS-422 signals to complementary 50 Ω SMA ECL signals. The PRL-422NECL, dual channel converter, converts single-ended or differential 50 Ω SMA ECL signals back to 124 Ω Triax RS-422 signals. PECL I/O versions of these devices can be made, but there has been no request for these devices. Q3: How do I
convert 124 Ω
ECL to 50 Ω
ECL and back? A3: The PRL-432, dual channel converter, converts 124 Ω Triax ECL signals to 50 Ω SMA ECL signals. The PRL-433, dual channel converter, converts single-ended or differential 50 Ω SMA ECL signals to 124 Ω Triax ECL signals. Q4:
How
do I measure a signal coming out of a Triax or Twinax connector? A4: It is very unlikely that there is a scope with a differential Triax or Twinax input connector. If one is dealing with a digital signal, either the PRL-422RS or the PRL-432 can be used to detect the signal. Direct measurement of a differential signal would require an instrumentation type amplifier. |