Keysight 53181A RF Frequency Counter, 10 digit/sec.

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The Keysight 53181A RF counter (formerly Agilent Technologies) provides fast, precise results with the core measurements you are likely to need for RF tests. It provides the same signal processing and test automation features as the 53131A and 53132A universal counters, along with 10 digits/second resolution. The 53181A offers a single 225 MHz channel standard, and you can choose an optional second channel that measures up to 1.5 GHz, 3 GHz, 5 GHz or 12.4 GHz.

Keysight 53181A RF frequency counter instruments were previously manufactured by Agilent Technologies.