HP 4262A - Page 37

Section III
Paragraphs 3-7 to 3-9
3-7. TEST SIGNALS.
3-8. Three test signal frequencies are available:
these are 120Hz, 1kHz and 10kHz sinusoidal wave-
forms which have a frequency accuracy of 3%. The
typical voltage applied to the sample or current
flowing through the sample is specified in Table
3-1 for all test signal frequencies. A constant test
voltage is supplied to the sample when measuring
parallel parameters Lp, Cp, and Rp. The constant
current method is adopted for the measurement of
Ls, Cs,
and Rs. The 50mVrms test voltage is used
only for Cp measurement.
Model 4262A
3-9. MEASUREMENT RANGE.
3-10. As given in Table 3-2, the 4262A has wide
measurement ranges. Seven or eight ranges are
available (depending upon measurement function)
and the appropriate range is automatically selected
for the value of sample connected to the 4262A
UNKNOWN terminals. For applications which re-
quire a fixed measurement range (such applications
are sometimes needed, for example, in inductance
measurements), manual range control is push-
button selectable. Four or five ranges, however, are
used in the series and parallel equivalent circuit
measurement modes. When the CIRCUIT MODE is
set to AUTO, the 4262A will automatically select
the appropriate circuit mode, range over the
measurement ranges shadowed in Table 3-2, settle
on the proper range, and measure the sample.
Table 3-1. Sample Voltage or Current.
CIRCUIT MODE
RANGE
Ls Lp Cs Cp Rs Rp
1 40mA rms 1Vrms (50mV rms)* 40mA rms
2 10mA rms 1Vrms (50mV rms)* 10mA rms —_—
3 ImA rms 1Vrms (50mV rms)* 1mA rms
4 100 pA rms 1V rms 10 pArms | 1Vrms (50mVrms)* | 100 uA rms 1V rms
5 10 A rms 1V rms 100 A rms { 1Vrms (50mV rms)* 10 pA rms 1V rms
6 1V rms 1 A rms 1V rms
7 1V rms 10mA rms _— 1V rms
8 40mArms —_— 1V rms
*When TEST SIGNAL is set to LOW LEVEL.
Table 3-2. Measurement Ranges.
circurr | TEST Range
SIGNAL
MODE | frequency 2 3 4 5 6 7 8
120 Hz 0000mH | 0000 H | 000.0H -| 0000 H
Lp | kHz 000.0mH | D000wH *| 00.00H | 000.0°H
10 kHz 00.00mH | 000.0mH | 0006mH | 00.00H
120 Hz |,0000 ¢H. | 00,00mH | 000,0mH | Go00mH | 00.00 H
Ls LkHz ['000.0 4H | 0000.4H | 00,00 mH | 000.0mH.] 0000 mH
10kHz {00,004 | 00070 4H | 0000 4H | 00,00mH | 000.0mH
120 Hz |'0000 5P | 00.00 nF | 000,0 nF | 0000 nF | 00.00 4F
Cp L kHz |-000.0 pF {0000 pF -} 0000 nF
10kHz | 00,00 pF §. 000,0 pF. | 90,00 k.| 000.0 nF
120 Hz 0000 nF | 00,00 uF | 000.0 4F |-0000 aF | 00,Q0mF
Cs 1 kHz 000.0 nF | 0000 nF "} 00,00 4F | 000.0 uF | 0000 uF
10 kHz 00.00 nF [ 000.0 AF | 0000 sF | 80.00 xF | 000.0 xF
120 Hz 0000Q) | 00.00KY | 000.0 kY| 0000 k(| 00,00 MQ
Rp 1 kHz 0000 Q) | D000 KL 000.0K( | 0000 KO | 00,00 MO
10 kHz 0000 Q) 00,0012 | 000;0 k(L] 8000 KO | 00.00 MY
120 Hz | 00D0-mCY- | 00.00Q0 | 000.0€) -] 000002 . | 00.00 k()
Rs LkHz 0000 mQ) | 00,003 | 000.00Y |:.6000CY | 00.00kQ)
10kHz |00 mQ) | 00,000 | 000,002 | 500002 -~ 00,00k
Note: 0000uH indicates a range of 0001uH to1999uH ( and similarly for F and ).
3-6