Theory of
Operation—DM
5010
-36.9V
BIAS
FOR
FET
CATES
2994-12
Fig. 4-4. Simplified DCV signal conditioner bootstrap buffer.
rate. Eighteen
of these 250 kHz clock pulses in sequence
comprise
one measurement
interval. Some special counters
and
decoding
logic define the beginning,
middle,
and end of
each interval
and
initiate or terminate certain conversion
functions as shown
in Fig. 4-6.
Auto-Zero
Before
a conversion is performed, an initial zero-refer
ence
voltage (¾-2 V) must be set.
The Function Switch,
under direction of the Function
and Range Control circuitry,
switches the input of the DCV Signal Conditioner buffer am
plifier
to the high quality ground to initiate the Auto-Zero
period.
The input signal, and the output
of input buffer
U1120,
goes to zero volts.
4-8
ADD
JAN
1982
Summary of Contents for DM 5010
Page 14: ...DM 5010 2994 00 DM 5010 Programmable Digital Multimeter xii ADD JUL 1986...
Page 27: ...Operating Instructions DM 5010 2994 03 Fig 2 3 DM 5010 front panel controls and connectors 2 3...
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Page 251: ...Section 8 DM 5010 OPTIONS No options are available 8 1...
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Page 272: ...DM 5010 2994 37 Fig 10 2 Location of DM 5010 adjustments and test points...
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Page 276: ...DM 5010 2994 112 DM 5010 BLOCK DIAGRAM...
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Page 337: ...63 REV JUN 1986...
Page 338: ...FIG 1 EXPLODED DM 5010...
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