Tektronix 7D12 Operator's Instruction Manual page 33

M3 Specification-7D12 Operators
M3 SPECIFICATION
The electrical characteristics listed in Table 4-2 are valid
over the stated environmental range for instruments
calibrated at an ambient temperature of +20°C to +30°C,
and after a 20 minute warmup unless otherwise noted_
Limits and tolerances given in the Supplemental
Information column are provided for user information only
and should not be interpreted as Performance
Requirements_
TABLE 4-2
Electrical Characteristics
Characteristic Performance Requirement Supplemental Information
Input
Impedance 1 megohm, within 1%, shunted
by
50
picofarads or less.
Crest Factor (maximum) Five
E k
Crest Factor =
~
Peak Voltage (maximum) 2.5 times the RANGE setting, except 500 volt
RMS range which is limited to 1,000 volts peak.
Maximum Non-Destruct Input Volt-
500 volts RMS
age (between INPUT connectors)
1000 volts peak
Maximum Non-Destruct Input Volt-
500 volts peak
age (Between either INPUT con-
nector and chassis ground)
DC in AC Coupled Mode (Maximum) 200 volts
Digital System CMR
66 dB at DC to 60 Hz. Decreases 20 dB per
1100
n
Unbalance)
decade for higher frequencies.
Digital Accuracy 1M3 and 7012
Combination)
+15°C to +40°C
Sine Wave Input Reading Greater
Waveforms with form factors greater than 1.2
than 5% of Full Scale.
add: ± [0.1% X (form factor -1)
I
to the
percentage of full scale accuracy specifications.
E
RMS
Form Factor
=
E
Average
2 Volt and 20 Volt
Ranges
DC
±0.5% of full scale
40 Hz to 40 kHz ±0.25% of full scale
40 kHz to 100 kHz ±0.5% of full scale
200 Volt Range
DC
±0.5% of full scale
40 Hz to 4 kHz ±0.25% of full scale
4 kHz to 100 kHz ±0.5% of full scale; ± 1% of reading
4-4
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