Fluke 2635A, Руководство пользователя

Страница: 214 / 268

2635A
Users Manual
A-2
Table A-1. DC Voltage Measurements - Resolution
Range Resolution
Slow Fast
90 mV* 1 µV 10 µV
300 mV 10 µV 0.1 mV
3V 0.1 mV 1 mV
30V 1 mV 10 mV
300V 10 mV 0.1 V
900 mV** 10 µV 0.1 mV
* Not used in Autoranging
*** Computer interface only (see FUNC command).
Accuracy
See Table A-2.
Table A-2. DC Voltage Measurements - Accuracy
ACCURACY ±(%±V)
RANGE 18°C TO 28°C 0°C TO 60°C
90 DAYS
SLOW
1 YEAR
SLOW
1 YEAR
FAST
1 YEAR
SLOW
1 YEAR
FAST
90 mV* .019% + 6 µV .024% + 6 µV .044% + 20 µV .068% + 6 µV .088% + 20 µV
300 mV .018% + 20 µV .023% + 20 µV .040% + 0.2 mV .067% + 20 µV .084% + 0.2 mV
3V .019% + 0.2 mV .024% + 0.2 mV .041% + 2 mV .065% + 0.2 mV .082% + 2 mV
30V .019% + 2 mV .024% + 2 mV .041% + 20 mV .086% + 2 mV .103% + 20 mV
150/300V .019% + 20 mV .024% + 20 mV .041% + 0.2 V .087% + 20 mV .104% + 0.2 V
900 mV* ** .016% + 20 µV .021% + 20 µV .037% + 0.3 mV .064% + 20 µV .096% + 0.3 mV
* Not used in Autoranging.
** Computer interface only (see FUNC command).
Input Impedance
100 M
e
minimum in parallel with 150 pF maximum for all ranges 3V and below 10 M
e
in parallel with 100 pF maximum for the 30V and 300V ranges
Normal Mode Rejection
53 dB minimum at 60 Hz ±0.1%, slow rate
47 dB minimum at 50 Hz ±0.1%, slow rate
Common Mode Rejection
120 dB minimum at dc, 1 k
e
imbalance, slow rate
120 dB minimum at 50 or 60 Hz ±0.1%, 1 k
e
imbalance, slow rate