STANDARD SIGNAL GENERATOR

PURPOSE:To attain a recall action at a standard signal generator by a single key operation by storing plural optional modulation states including a simultaneous modulation state. CONSTITUTION:A key input register 8 binary codes a modulation information signal set by a panel key A. A data processing register 9 produces the parity check data from the signal of the register 8. The signal of the register 9 is preserved double at a memory part 12. A data check part 11 confirms the coincidence between the double data of the part 12 and performs a parity check. While control signal decoders 13 and 14 convert the modulation degree data stored in the part 12 into an analog output for modulation and also display said modulation degree data checked by the part 11 and the modulation mode sent from an FM/AM selector 21 at display parts 24 and 25 respectively. Thus a recall action is possible just a single key operation.