TB 9-6625-199-24
APPENDIX B
PERFORMANCE TABLES
Beckman Instruments, Model DM25XL
Test instrument parameters
Performance specifications
DC VOLTAGE
Range: 0 to 1000 V dc
Accuracy: (0.5% rdg + 1 dgt)
AC VOLTAGE
Range: 0 to 750 V ac, 40 to 500 Hz
Accuracy: (1.2% rdg + 3 dgts)
DC CURRENT
Range: 0 to 10 A dc
Accuracy: (1.25% rdg + 3 dgts), 200 μA dc to 200 mA dc rngs;
(2.5% rdg + 3 dgts), 10 A dc rng
AC CURRENT
Range: 0 to 10 A ac, 50 to 500 Hz
Accuracy: (1.8% rdg + 4 dgts), 200 μA ac to 200 mA ac rngs;
(3% rdg + 4 dgts), 10 A ac rng
Range: 0 to 2000 MΩ
Accuracy: (1.2% rdg + 4 dgts), 200 Ω rng;
(1.2% rdg +2 dgts), 2 kΩ to 2 MΩ rng;
(3% rdg + 4 dgts), 20 MΩ rng;
(5% rdg -10 dgts) +10 dgts, 2000 MΩ rng1
Range: 0 to 20 μF
Accuracy: (3% rdg +10 dgts)
Range: 0 to 20 MHz
Accuracy: (1% rdg + 1 dgt)
-10 digits is due to a fixed 10 digit (10 MΩ) offset.
1
Table B-136. DC Voltage.
Calibrator output
Test instrument
Applied
Range
Limits (V dc)
(V dc)
(V dc)
Min
Max
190 m
200 m
188.9 m
191.1 m
1.9
2
1.889
1.911
10
20
9.94
10.06
19
20
18.89
19.11
-19
20
-19.11
-18.89
190
200
188.9
191.1
900
1000
894
906
Table B-137. AC Voltage.
Calibrator output
Test instrument
Applied
Range
Limits (V ac)
(V ac)
(V ac)
Min
Max
190 m @ 60 Hz
200 m
187.4 m
192.6 m
190 m @ 400 Hz
200 m
187.4 m
192.6 m
1.9 @ 60 Hz
2
1.874
1.926
1.9 @ 400 Hz
2
1.874
1.926
19 @ 60 Hz
20
18.74
19.26
19 @ 400 Hz
20
18.74
19.26
190 @ 60 Hz
200
187.4
192.6
190 @ 400 Hz
200
187.4
192.6
700 @ 60 Hz
750
689
711
700 @ 400 Hz
750
689
711
B-54