One of the last top products to be produced under the Marconi name. A very high quality generator featuring up/down keys and a rotary knob for ease of parameter selection. A 0.1dB resolution attenuator ranging from +13dBm to –137dBm. The modulation generator provides: AM; FM; FSK and can be PULSE modulated (CW >25MHz) from a rear BNC with an on/off ratio of better than 45dB. The pulse rise/fall time better than 10uS. Frequency resolution is 1Hz. The modulation oscillator o/p is available from a 600 ohm source at 2Vrms. Full GPIB and RS232 control.