Keithley 3321 Operator's Manual page 60

APPENDIX A
Model 3321 Specifications
A.1 MEASUREMENT PARAMETERS
Kinds of Parameters
l
Main Parameters
AUTO: Selects the main parameters, sub-parameters and equivalent
circuits automatically.
L: Self-inductance (unit: H, henry)
C: Capacitance (unit: F, farad)
I Z I : Magnitude of impedance (unit: n)
There are series and parallel measuring modes for each of L, C and R.
l
Sub-parameters
Q: Quality factor (quality of circuit)
D: Dissipation factor (= tan 6 = l/Q)
ESR: Equivalent series resistance (unit: a)
G: Parallel conductance (unit: S, siemens; 1 /fi; Mho)
0: Phase angle of impedance (unit: degree)
l
Equivalent Circuits
AUTO: Automatic selection
SER: Series
PAR: Parallel
l
Automatic Parameter Selection
Parameters can be automatically selected by the phase angle of imped-
ance.
0=+90"+45"+L-Q
8=-90"f45"+C-D
0 = Other than the above + I Z I - 8
l
Automatic Selection of Equivalent Circuits
Equivalent circuits can be automatically selected by the value and phase
angle of impedance, and the combination of parameters.
Displayed Resolution
4-l/2 digits (19999 max)
D and Q Resolution: 0.0001 min
8 Resolution: 0.01"
Measuring (display) Range
I Z I,
ESR: O.lmR to 19.999Mfi
c: O.OOlpF to 199.99mF
L: O.lnH to 19.999kH
Q, D: 0.0001 to 19999
G: O.OOlpS to 199.995
8:
-180.00"
to +179.99O
These ranges are dependent on the frequency, measuring range, and
phase angle of impedance.
Accuracy
Accuracy Guarantee Conditions
l
Warm-up time: 30 minutes.
l
Ambient temperature and humidity: 23" zk5'C, 590% RH.
l
Zero correction: Performed under the above conditions.
l
Calibration period: 12 months.
Accuracy of
I
Z I and 0
For 0.2n < I Z I 2 20MR, see Table A-l.
For I Z I < 0.2fi, see Table A-2.
For I Z I >20MSL, see Table A-3.
Notes:
1. When a measurement is made at twice line frequency, the measured
value may deviate beyond the accuracy range due to interaction with
line frequency.
2. When the operating temperature is 5"4O"C, add the value shown in
Table A4 to
that
in Table A-l. Double the values shown in Table A-2
and A-3.
3. Tables A-l through A-3 show the worst case value in each impedance
range. Obtain the correct accuracy in the following ranges by linear
interpolation:
l
IZI =lMto20Mf2
In this range, as impedance increases, accuracy decreases.
accl: Accuracy shown in one range below the range including a Z in
Table A-l.
acc2: Accuracy (worst case value) shown in the range including a Z in
Table A-l.
l
I z I = 0.2 to 2R
In this range, as impedance decreases, accuracy decreases.
accl: Accuracy (worst case value) shown in the range including a Z in
Table A-l.
Specifications subject to change without notice.