1656: Difference between revisions
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|model=1656 | |model=1656 | ||
|class=impedance measurement | |class=impedance measurement | ||
|summary= | |summary=Impedance bridge | ||
|image=GR 1656 Front A.jpg | |image=GR 1656 Front A.jpg | ||
|caption=General Radio 1656 Impedance Bridge | |caption=General Radio 1656 Impedance Bridge | ||
| Line 11: | Line 11: | ||
|manuals= | |manuals= | ||
* [[Media:GRwiki 1656 Impedance Bridge 1656-0100-B 07_1974 .pdf|General Radio 1656 Impedance Bridge 1656-0100-B 1974]] | * [[Media:GRwiki 1656 Impedance Bridge 1656-0100-B 07_1974 .pdf|General Radio 1656 Impedance Bridge 1656-0100-B 1974]] | ||
{{Catalog History}} | |||
}} | }} | ||
The | The {{Title|General Radio 1656 Impedance Bridge}} was introduced in {{Catalog U}} and remained available through {{Catalog 1978}}. | ||
It is last in a long line of manual impedance bridges starting with [[650-A]] in 1933. | |||
The 1656 features a built-in generator and detector, with side-panel connections for external ones. | |||
The new CRL device that displays results in a digital format was a collaboration between Oak Manufacturing and General Radio. | |||
The DQ dial is of the conventional design. | |||
The 1656 is powered by five D-cells – four for the generator/AC detector, and one for the DC detector. Both batteries can be checked by the front panel function switch. | |||
==Specifications== | ==Specifications== | ||
* '''Ranges:''' | * '''Ranges:''' | ||
* '''Capacitance:''' 0.1 pF to 1100 μF | ** '''Capacitance:''' 0.1 pF to 1100 μF, series or parallel, 7 ranges | ||
* '''Inductance:''' | ** '''Inductance:''' 0.1 μH to 1100 H, series or parallel, 7 ranges | ||
* '''Resistance:''' 0.1 mΩ to 1.1 MΩ | ** '''Resistance:''' 0.1 mΩ to 1.1 MΩ, AC or DC, 7 ranges | ||
* '''Conductance:''' 0.1 | ** '''Conductance:''' 0.1 nS to 1.1 S, AC or DC, 7 ranges | ||
* '''Basic Accuracy:''' .1% | * '''Basic Accuracy:''' 0.1% (see manual) | ||
* '''Generator:''' Internal, 1 kHz ±2% | * '''Generator:''' Internal, 1 kHz ±2% AC, 1.5 V DC; External, 20 Hz to 20 kHz AC | ||
==Links== | ==Links== | ||
* [[Media:GR Exp 1656 03_1970.pdf|Experimenter describing Type 1656 March 1970]] | * [[Media:GR Exp 1656 03_1970.pdf|Experimenter describing Type 1656 March 1970]] | ||
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GR 1656 Inside Top.jpg | GR 1656 Inside Top.jpg | ||
GR 1656 Rear B.jpg | GR 1656 Rear B.jpg | ||
GR 1656 Rack Mounting.jpg | |||
</gallery> | </gallery> | ||
[[Category:Impedance measurement]] | [[Category:Impedance measurement]] | ||
Latest revision as of 19:03, 16 April 2024
The General Radio 1656 Impedance Bridge was introduced in Catalog U (1970) and remained available through Catalog 1978.
It is last in a long line of manual impedance bridges starting with 650-A in 1933.
The 1656 features a built-in generator and detector, with side-panel connections for external ones. The new CRL device that displays results in a digital format was a collaboration between Oak Manufacturing and General Radio. The DQ dial is of the conventional design.
The 1656 is powered by five D-cells – four for the generator/AC detector, and one for the DC detector. Both batteries can be checked by the front panel function switch.
Specifications
- Ranges:
- Capacitance: 0.1 pF to 1100 μF, series or parallel, 7 ranges
- Inductance: 0.1 μH to 1100 H, series or parallel, 7 ranges
- Resistance: 0.1 mΩ to 1.1 MΩ, AC or DC, 7 ranges
- Conductance: 0.1 nS to 1.1 S, AC or DC, 7 ranges
- Basic Accuracy: 0.1% (see manual)
- Generator: Internal, 1 kHz ±2% AC, 1.5 V DC; External, 20 Hz to 20 kHz AC
