Dytronics 411 The 411 Phase Angle Generator is a

The 411 Phase Angle Generator is a general purpose Phase Shifter. This instrument is extremely stable in both phase shift and gain over a wide operating frequency range. Each decade of the 5 decades of operating frequency is selectable by a push button on the FREQUENCY RANGE switch. Frequency Range: 1Hz to 100kHz Output Current: 40 ma Output Impedance: Less than 1-ohm Phase Variation with Frequency Shift: 0.573º for a 1% change in frequency