The 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 includes a 20 MHz 5-digit external frequency counter.

•     Generates Sine, Triangle, and Square waveforms from 0.5 Hz to 4 MHz
•     Generates Ramp and ±Pulse waveforms from 0.5 Hz to 3.5 MHz
•     20 Vpp output into open circuit (10 Vpp into 50Ω)
•     Lin or Log Sweep Function
•     TTL output
•     Adjustable ±10 V DC offset
•     Variable amplitude output plus 20 dB attenuator
•     Kensington security slot
•     cUL approved
  
  4003A Additional Features
  
•     20 MHz frequency counter
•     5-digit LED display
•     CMOS variable output
•     Voltage Controlled Frequency (VCF) input