The output capability of the 8640 is up to +19 dBm. You can set output level with a front panel 10 dB step attenuator and an 18 dB vernier attenuator.
The 8640 provides three forms of signal modulation. They are amplitude, frequency and pulse modulation.
The 8640 is capable of measuring input frequencies up to 550 MHz. Depending on switch settings, the resolution is 100 Hz for a 500 MHz signal and 0.1 Hz for a 500 kHz input.
The meter on the generator is capable of reading output power in dBm and volts. It also reads amplitude modulation percentage and frequency modulation peak deviation. Typical accuracy of this meter is ±3 percent.