BS 7681-5(1995) : 1995 AMD 9661

Committees responsible
National foreword
Methods
1. Scope
2. Introduction
3. Measurement procedures
4. Choice of admittance measurement method
5. Calibration techniques
6. Low-frequency measurements
7. Admittance analysis and estimation of the equivalent
     circuit parameters
8. Measurement errors, instrumentation and test fixtures
Annexes
A. (normative) Calibration
B. (informative) Low-frequency measurement
C. (informative) Bibliography
Figures
1. Measurement sequence
2. Measurement methods, admittance analysis and parameter
     estimation techniques
3. One-port equivalent circuit of a single-mode quartz
     crystal unit
4. Two-port equivalent circuit of a single-mode quartz
     crystal unit
5. Admittance and impedance circle of a quartz crystal
     unit for frequencies near an isolated mode of
     vibration
6. General one-port equivalent circuit for multiple
     resonances
7. Two-port equivalent circuit for multiple resonances
8. Procedure for the determination of the equivalent
     circuit parameters of a quartz crystal unit
9. Calibration verification for S-parameter measurement
10. APC-3.5 Transmission fixture
11. APC-7 Transmission fixture
12. APC-7 Reflection fixture
13. APC-3.5 One-port fixture
14. APC-3.5 Two-port fixture
15. Direct transmission measurement fixture
A.1 Simplified one-port network analyzer
A.2 Simplified two-port, three-channel network analyzer
A.3 Signal flowgraph representation for proposed 12-term
     error model
A.4 Typical direct transmission system
A.5 Equivalent circuit for direct transmission method
A.6 Thin-film calibration resistor
A.7 Modified SMA terminating resistor
B.1 Simplified network analyzer test system for low-
     frequency measurements
B.2 1:2 Directional bridge for low-frequency measurements
B.3 1:1 Directional bridge for low-frequency measurements

Gives methods for determining the best representations of modes in quartz crystal resonators by linear equivalent circuits. Describes methods for determining the values of the electrical parameters of piezoelectric quartz crystal units using automated vector analyzer equipment. AMD 9661 RENUMBERS THIS STANDARD