Didn't know that Radio Shack made Caesium standards. Any phase-locked loop contains an integrator that has the phase error as its input. The output of the integrator is then amplified to produce the control signal for the voltage-controlled oscillator.
The integrator output settles at some voltage that causes the phase error to go to zero (until something changes). This voltage has a range, like +/- 10 volts, where it is able to vary the VCO. When the voltage reaches either limit, the integrator is said to be saturated. I'd expect the Integrator meter to show the output of the integrator. Normally, you'd trim the VCO to center the meter at zero. If the meter saturates in either direction, the PLL is open, which means that the integrator output isn't getting to the VCO, or the VCO isn't varying, or the phase detector isn't detecting, or the integrator is bad, or anything else that would break the loop. The Amplifier probably isn't the one after the integrator, but is the one that amplifies the output of the physics package. In a Rb standard, the physics package is the phase detector for the PLL. Bill Hawkins -----Original Message----- From: [email protected] Sent: Tuesday, October 26, 2010 9:04 AM Does any one have any info on the RS cesium standard. Specifically does anyone know what switch position 7 Integrator and position 8 Amplifier measure? Any help will be appreciated. Thank you. Bert Kehren _______________________________________________ time-nuts mailing list -- [email protected] To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there.
