Fluke 45 - Manual (Page 113)

Appendices
Specifications
A
A-9
Note
When the meter is set to measure frequency and there is no input signal
(i.e., the input terminals are open), the meter may read approximately 25
kHz (rather than zero). This is due to internal capacitive pickup of the
inverter power supply into the high-impedance, input circuitry. With source
impedance of <2 k
Ω
, this pickup will not affect the accuracy or stability of
the frequency reading.
Environmental
Warmup time
Temperature Coefficient
Operating Temperature
Storage Temperature
Relative Humidity
(non-condensing)
Altitude
Electromagnetic
Compatibility
Vibration
Shock
1 hour to rated specifications for warmup < 1 hour, add 0.005 % to all
accuracy specifications.
<0.1 times the applicable accuracy specification per degree C for 0 °C to
18 °C and 28 °C to 50 °C (32 °F to 64.4 °F and 82.4 °F to 122 °F)
0 °C to 50 °C (32 °F to 122°F)
-40 °C to + 70 °C (-40 °F to 158°F)
Elevated temperature storage of battery will accelerate battery
self-discharge. Maximum storage time before battery must be
recharged:
20 °C – 25 °C 1000 days
50 °C 180 days
70 °C 40 days
To 90 % at 0 °C to 28 °C (32-82.4 °F),
To 80 % at 28 °C to 35 °C (82.4-95 °F),
To 70 % at 35 ° C to 50 °C (95 °F -122 ° F) except to 70 % at 0 °C to 50
°C (32 °F -122 °F) for the1000 k
Ω
, 3 M
Ω
, 10 M
Ω
, 30 M
Ω
, 100 M
Ω
,and
300 M
Ω
ranges.
Operating 0 to 10,000 feet
Non-operating 0 to 40,000 feet
In an RF field of 1 V/m on all ranges and functions: Total Accuracy =
Specified Accuracy +0.4% of range. Performance above 1 V/m is not
specified
3 G @ 55 Hz
Half sine 40 G. Per Mil-T- 28800D, Class 3, Style E.
Bench Handling. Per Mil-T-28800D, Class 3.