Equipment information

IET Labs Inc. 1616 Test Set
Manufacturer:
Model:
1616
Date:
2001
Category:
Group:
Description:
Precision Capacitance Bridge

Information

The 1621 Capacitance-Measurement system is designed for the precise measurement of capacitors and capacitance standards. In the standards laboratory, its high resolution for capacitance and conductance make this system well suited for capacitance standards measurements. Its phase-indicating error meters facilitate rapid balancing. Convenient in-line readout maximizes accuracy of manual data recording and BCD outputs are provided for automatic data processing. The 1621 system measures either 3-terminal or 2-terminal capacitors. The transformer-ratio-arm circuitry of the bridge assures that 3-terminal measurements can be made accurately, even in the presence of large capacitances to ground. For instance, a ground capacitance of 1 ;uF produces an error of only 0.03% in the measurement of 1000-pF capacitor. This feature makes the assembly very useful for in situ measurements of ungrounded circuit capacitances. The 1616 Precision Capacitance Bridge, one of the 3 instruments in that system, may be obtained separately. The bridge will perform as described herein, if used with an Oscillator and detector equivalent to the CiR 1316 and 1238. NOTE This manual describes the 1621 system generally and provides its operating instructions. This manual also describes in detail the 1616 bridge only. A wide range of capacitances can be measured, extending from the resolution limit of 0.1 aF (10‘7pF) to a maximum of 10 /if, with internal standards, or farther with external standards. For 3-terminal unknown capacitors, a pair of coaxial terminals is provided; for 2-terminal coaxial "unknowns," a single precision connector facilitates exacting control of fringing effects. Since an important use of this bridge is the comparison of capacitance standards, another pair of coaxial terminals is provided on the bridge to which a 3-terminal reference standard can be connected and designated EXTERNAL STANDARD. The other standard is then connected to the selected UNKNOWN terminals, and the internal standards are used to complete the balance. If the ratio between the two standards is close to 0.1, 1., or 10, the accuracy of the measurement is equal to the accuracy of calibration of the reference standard, and the precision of comparison is 1 part in 10s (0.01 ppm) of a 10-pF capacitor (or even better for larger ones). 1.2 DESCRIPTION. Figure 1-1. 1.2.1 General. The 1621 Precision Capacitance-Measurement System consists of the 1616 Precision Capacitance Bridge with the 1316 Oscillator and the 1238 Detector, a complete system for the precise measurement of capacitance. Oscillator and detector are mounted above the bridge, in a pedestal cabinet, as pictured in the front pages (and Figure 1-2); or the three instruments may be rack mounted. Connecting cables, supplied, go neatly behind the assembly.

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Service and User Manual
Manual Type:
Service and User Manual
Pages:
94
Size:
20.00 Mbytes (20969728 Bytes)
Language:
english
Revision:
Manual-ID:
Date:
2001 01 01
Quality:
Scanned document, all readable.
Upload date:
2017 02 04
MD5:
0f18a413ef05df8c38d797519e504826
Downloads:
1223

Information

CONTENTS Section 1 Warranty Characteristics Section 2 Operating Instructions Section 3 Circuit Description Section 4 Maintenance Section 5 Calibration Section 6 Parts List and Schematics

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