Equipment information

Hewlett Packard 414A Analog multimeter
Manufacturer:
Model:
414A
Date:
1966
Category:
Group:
Description:
Autovoltmeter

Information

The Model 414A Autovoltmeter is used to accurately measure dc volts and ohms with immediate, automatic range selection. Operation is simply "touch and read." Automatic, overload protection circuits insure that the instrument will not be damaged by an overrange voltage before upranging can occur. Both range and polarity are displayed in illuminated characters above the meter. In the AUTO mode, a downrange to the next lowest range occurs when the measured voltage or resistance falls below 25% of full scale; and an uprange to the next highest range occurs when the measured voltage or resistance rises above 96% of full scale. A HOLD mode provides manual downranging, a step at a time, using the DOWNRANGE switch and also adds a noise Filter to the input. When measuring voltage in this mode, an automatic uprange to the 1500 v range will occur if the measured voltage exceeds full scale by 40%. On resistance measurements in the HOLD mode, upranging will never occur, even when the measured resistance becomes infinite, such as when the probes are removed from a resistor.

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Service and User Manual
Manual Type:
Service and User Manual
Pages:
69
Size:
24.07 Mbytes (25238222 Bytes)
Language:
english
Revision:
Manual-ID:
01789-1
Date:
Quality:
Scanned document, all readable.
Upload date:
2013 11 30
MD5:
9b55fee88708f7a5f2a6f246b9d2babd
Downloads:
734

Information

SERIALS PREFIXED: 630- Appendix C, Manual Backdating Changes, adapts manual to Serials Prefixed: 605- and 531-.

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