EIP 548A Microwave Frequency Counter

EIP 548A Microwave Frequency Counter
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The EIP 548A is a microprocessor-based counter which uses EIP's frequency-selective heterodyne technique for counting microwave frequencies.


Resolution Front panel keyboard select 1 Hz - 1 GHz
Measurement Time 1 msec for 1 kHz resolution
1 sec for 1 Hz resolution
Display 12 digit LED sectionalized to read GHz, MHz, kHz, Hz
Accuracy ±1 count ±time base error
Test Front panel selected diagnostics
Sample Rate Controls time between measurements, variable from 100 msec typical to 10 sec. Switchable HOLD position holds display indefinitely
Reset Resets display to zero and initiates new reading
Offsets Keyboard control of frequency and power offsets. Displayed frequency (power) is offset by the entered value to 1 Hz resolution (0.1 dB power)



  • D to A Converter
  • Power Measurement
  • High Stability Time Base
  • Extended Frequency
  • Remote Programming/BCD Output
  • GPIB
  • Rear Panel Input
  • Chassis Slides