Fluke 2680A, Руководство пользователя

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Appendices
Specifications
A
A-3
Table A-1. 2680 Series General Specifications (cont)
Specification Characteristic
Relative Humidity 90% maximum for -10
o
C to 28
o
C (14
o
F to +82
o
F)
75% maximum for 28
o
C to 35
o
C (82
o
F to +95
o
F)
50% maximum for 35
o
C to 60
o
C (95
o
F to +140
o
F)
(3 M
Ω
range, reduce humidity rating by 25% for 1 hour warm-up.
3 M
Ω
range meets full humidity ratings with 2 hour warm-up)
Altitude Operating: 2,000 m (6,562 ft) maximum
Non-operating: 12,200 m (40,000 ft) maximum
Warm-up Time 1 hour to rated specifications -or- 15 minutes if relative humidity
(non-condensing) is 50% or less.
Real-Time Clock and Calendar
The next table provides a summary of the battery powered real-time clock and
calendar.
Table A-2. 2680A/2686A Real-Time Clock and Calendar
Specification Characteristic
Accuracy 1 minute per month for 0
°
C to 50
°
C range
Battery Life >5 unpowered instrument years for 20
°
C to 28
°
C (68
°
F to 82.4
°
F).