Frequency synthesis and microprocessor control give this generator wide versatility coupled with ease of use. User-friendly keypads provide control of frequency, modulation parameters and output levels. Operating setups can be stored and recalled for routine tests at up to 100 addresses and recalled setups can be modified temporarily without disturbing the programmed entries. Battery backup protects the memory for up to a month in case of power lapse. RF frequency range from 100 kHz to 140 MHz provides coverage for both operating and IF frequencies. Setting resolution is 100 Hz at operating frequencies below 30 MHz and 1 kHz above. Output levels can be changed in 10, 1 and 0.1 dB increments. The PLL synthesizer ensures stable output frequencies (±50 ppm).
The 3216 front panel display includes large, bright LEDs for AM/FM/Pilot or total modulation, memory, RF frequency and RF output. AM modulation (0-60.0%) or FM deviation (0-99.9 kHz) are available internally at 400 Hz and 1 kHz as well as externally. The 19 kHz pilot deviation can be set from 0-10.0 kHz. FM stereo modes of operation include L, R, Main (L+R), Sub (L-R) and Pilot. External modulation can be applied to all of the above modes via the left external modulation input. Stereo modulation can be applied via the left and right external inputs. Stereo separation is 55 dB or more at 1 kHz. The GPIB listener option makes the generator ideal for AM/FM receiver production and QC applications where high throughput is necessary All front panel switches (except AC power) can be remotely controlled via the 24-pin connector on the rear panel.