HP 410C manual Front and Rear Panel Controls 01556-2

TM 11-6625-1614-15

Section	III	Model 410C
Figure	3-1

1.FUNCTION SELECTOR: This control is used for selecting type of measurement to be made. They are: ±DC Voltage, ±DC Current, AC Voltage, and resistance measurements.

2.AC ZERO: This control provides adjustment for zero-setting the meter before making AC volt- age measurements.

3.MECHANICAL ZERO ADJUST: This adjustment mechanically zero-sets the meter prior to turn- ing on Voltmeter.

4.RANGE: This control selects the full scale meter range.

5.AC POWER SWITCH: This push button - lamp combination, when depressed, turns the instru- ment power on or off. The push button glows when the Voltmeter power is on,

6.DCA-OHMS: This lead is used in conjunction with the COM Lead to measure DC current or ohms. The FUNCTION SELECTOR determines which measurement is made.

7.COM: This lead is used with the input leads for DC voltage current, AC voltage, and resistance

measurements. The COM Lead is normally floating; however, a shorting bar can be con- nected from the floating ground terminal to the chassis ground terminal on the DC AMPLIFIER OUTPUT connector. If a shorting bar is not used, the COM Lead is floating except when the FUNCTION SELECTOR is set to ACV.

8.DCV: This lead is used in conjunction with the COM Lead to measure ±DC voltage.

9.AC PROBE (300V MAX): Receptacle for tele- phone-type plug of Model 11036A AC Probe . With probe connected the Voltmeter may be used to make AC voltage measurements.

10. ADJUST: This control is used to set meter

pointer to before resistance measurements are made. Only periodic adjustment o f this screwdriver adjustment is necessary.

11.LINE VOLTAGE: This two-position slide switch sets the instrument to accept either 115 or 230 volt AC primary power.

12.FUSEHOLDER: The fuseholder contains a 0. 25 ampere slow-blow fuse for both 115 vac and 230 vac modes of operation.

13.AC POW ERCONNECTOR: Accepts power cable supplied with the instrument.

14.DC AMPLIFIER OUTPUT: Provides DC vol- tage output proportional to meter indication for driving external recorder. 1.5 volts DC out- put for full scale meter deflection.

Figure 3-1. Front and Rear Panel Controls

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