Models 4001A and 4003A are 4 MHz sweep function generators. The sweep function offers linear or log sweep with variable sweep rates and widths. The model 4003A has the addition of a 20 MHz 5-digit external frequency counter.

• 4 MHz Sweep Function Generator with Dial
• Generates Sine, Triangle & Square waveforms from 0.5 Hz to 4 MHz
• 20Vpp output into open circuit (10Vpp into 50 Ohms)
• TTL Output <30nS
• Voltage Control Generator (VCG) input
• 100% DC offset
• Variable amplitude output plus 20dB attenuator
• A 4 MHz Sweep Function Generator with an analog frequency control knob, linear/log sweep and DC offset.