Scientific mes-technik offers rf frequency counters available in frequency range 0-1.6 ghz. Other specifications: sensitivity 20 mvrms, time base 10 mhz cystal 0.5 ppm [ocxo]; frequency a/b/c period, ratio, rpm, offset, pulse width, time interval a-b measuring functions. There is optional serial interface and ieee-488. Model: hm5021-3 universal counter: 1.6 ghz, 20 mv with seven measurement functions; and hm 8122 programmable frequency counter: 1.6 ghz, 20 mv with 9 measurement functions.
