|
|
The EIP 25B is a microprocessor-based microwave frequency counter that measures the frequency and power of CW signals. The frequency range of the 25B is from 10 Hz to 20 GHz. Frequency measurements are divided into three bands. Power meaurements can only be made in Band 3. Band 1 is a high impedance input (1 MOhm/20pF) and covers frequency range from 10 Hz to 100 MHz, with a sensitivity of 25 mV rms. Band 2 has an input impedance of 50 ohms and covers the frequency range from 10 MHz to 1 GHz, with a sensitivity of -20 dBm. Band 3 has an input impedance of 50 Ohms and covers the frequency range from 1 GHz to 20 GHz, with a sensitivity of -30 dBm from 1 GHz to 12.4 GHz and a sensitivity of -25 dBm from 12.4 to 20 GHz. Through keyboard control and remote operation via the general purpose interface bus (GPIB), the EIP 25B counter provides frequency features such as offsets, frequency multiplication, center frequency, and frequency limits. A high stability time base is available as an option.Measurements are presented on a 12-digit LED display that is sectionalized to read directly in GHz, MHz, kHz, and Hz.
|