Test Signals; Measurement Range - HP 4262A Operating And Service Manual

Section III
Paragraphs 3-7 to 3-9
Model 4262A
3-7. TEST SIGNALS.
3-9. MEASUREMENT RANGE.
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.
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.
RANGE
CIRCUIT MODE
Ls Lp Cs
Cp Rs
Rp
1 40mA rms lVrms (50mVrms)*
40mA rms
2 10mA rms 1 Vrms (50mV rms)*
10mA rms
3 1mA rms 1Vrms (50mV rms)*
1mA rms
4 100 nA rms
IV rms
10 fiA rms
IVrms (50mV rms)* 100 mA rms
IV rms
5
6
10 mA rms
IV rms
IV rms
100 mA rms
1 mA rms
lVrms (50mV rms)*
10 mA rms IV rms
IV rms
? IV rms 10mA rms IV rms
40m Arms IV rms
*When TEST SIGNAL is set to LOW LEVEL.
Table 3-2. Measurement Ranges.
CIRCUIT
MODE
TEST
SIGNAL
Frequency
Range
1
2 3 4 5 6 7 8
120 Hz 0000 mH
00.00 H
000.0H 0000 H
Lp ' l kHz
000. OmH
0000 mH
00.00 H
000.0 H
10 kHz
00.00 mH
OQO.OmH
OOOGmH
00.00 H
120 Hz
0000 mH OG.OOmH 000, OmH 0000 mH
00.00 H
LS
1 kHz
000.04? 0000 00.00roH
OQO.OmH
0000 mH
10 kHz 00.00 4?
ooo.o
0000 nH
OO.OOmH
000. OmH
120 Hz 0000 pF
00.00 nF
000.0 nF 0000 nF
00.00 uF
Cp 1 kHz
000.0 pF 0000 pF
00.00 nF
000.0 nF
0000 nF
10 kHz
00.00 pf
000.0 pF
0000 pF 00.00 nF 000.0 nF
120 Hz
0000 nF
(10.00 nF 000.0 nF
oooo nF
00.110 mF
Cs 1 kHz
000.0 nF 0000 nF 00.00 nF 000.0 nF 0000 WF
10 kHz
00.00 nF 000.0 nF 0000 n F 00.00 nF 000.0 nF
120 Hz
0000 Q 00.00 kO
000.0 kO 0000 kQ 0
O.no
MQ
Rp 1 kHz
0000 a 00.00 kD
000.0 kO
0000 kO 00.00 MO
10 kHz
oooo 0 00.00 kO
ooo. Oik a
0000 kO
00.00 MQ
120 Hz 0000 mQ
oo.ooa
ooo.o a oooo a
00.00 kil
Rs 1 kHz 0 000 dO
00.00 a 000.0Q 0000. Q
OU.OOki)
10 kHz
0000 mQ
(>0.00 a
ooo.o a ooo o a
oo.ouka
Note: 0000mH indicates a range of 0001mH tol999MH ( and similarly for F and £2).