The EM-4320 Calibrated Impulse Generator is a reliable source of calibrated impulses at variable repetition rates. The EM-4320 provides a repetition rate variable between 1 and 100 Hz. (1 Hz steps between 1 and 10 Hz, 10 Hz steps between 10 Hz 100 Hz) and a provision for synchronizing with and operating at the AC line frequency. A front panel push-button switch also provides for generating a single impulse.

A front panel switch provides for selection of either positive or negative polarity of the impulse, thus facilitating checks for possible overload of a device under test.



Frequency Range: 10 kHz – 1000 MHz
Repetition Rate: 1 Hz – 100 Hz
Average VSWR: 1.7:1
Impedance: 50 Ohms
Calibrated Output Level: 0 to +90 dB (uV/MHz)
Output Connector: Type TNC
Power: 115/220 V, 50/60 Hz


Length: 300 mm (11 7/8”)
Width: 210 mm (8 3/16”)
Height: 150 mm (5 3/16”)
Weight: 3 kg (6 lbs.)

All units certified and traceable tocNational Institute of Standards and Technology (NIST).

Product Sheet