Keithley 3720 User Manual page 199

3706 Multimeter / Switch System
DC
DC Speeds vs. RMS Noise
Single Channel, 60Hz (50Hz) Operation
Aperture
Function NPLC
(ms)
14
DCV 83.3 (100)
5
14
16.7 (20)
1
12, 14
3.33 (4.0)
0.2
14
3.33 (4.0)
0.2
15
1.0 (1.2)
0.06
15
0.100 (0.120)
0.006
15
0.0083 (0.001)
0.0005
14
2W: 83.3 (100)
5
14
16.7 (20)
(”10k:) 1
12, 14
0.2 3.33 (4.0)
14
3.33 (4.0)
0.2
15
1.0 (1.2)
0.06
15
0.100 (0.120)
0.006
15
0.0083 (0.001)
0.0005
14
DCI 83.3 (100)
5
14
16.7 (20)
1
12, 14
3.33 (4.0)
0.2
14
3.33 (4.0)
0.2
15
1.0 (1.2)
0.06
15
0.100 (0.120)
0.006
15
0.0005 0.0083 (0.001)
14
83.3 (100)
4W: 5
14
16.7 (20)
1
12, 14
3.33 (4.0)
0.2
14
3.33 (4.0)
0.2
15
1.0 (1.2)
0.06
15
0.100 (0.120)
0.006
15
0.0083 (0.001)
0.0005
14
4W: 83.3 (100)
5
14
OCOMP 16.7 (20)
1
12, 14
3.33 (4.0)
0.2
14
3.33 (4.0)
0.2
15
0.0083 (0.001)
0.0005
14
Dry-Ckt: 83.3 (100)
5
14
OCOMP 16.7 (20)
1
12, 14
3.33 (4.0)
0.2
14
3.33 (4.0)
0.2
15
0.0083 (0.001)
0.0005
RMS Noise
10, 11
PPM of Range
RMS Noise calculator
Add 2.5 x "RMS Noise" to "ppm of range"
(e.g. 10V @ 0.006plc) "ppm of range" = 2.5 x 7.0ppm + 2ppm
Digits 100mV 1V 10V
7-½
1.0 0.07 0.05
7-½
0.9 0.12
6-½ 2.5 0.32
6-½
3.5 6.0
5-½ 12 10
4-½ 55 15
3-½
325 95
10-
1K: 10K:
100:
7-½
2.0 0.5
7-½ 3.5 0.8
6-½
6.5 1.7
6-½
8.0 4.5
5-½ 15 6
4-½
60 15
3-½ 190 190 190
10PA 100PA 1mA- 1A
7-½ 3.5 1.3
6-½
3.5 0.9
5-½ 300 10
4-½ 300 35
4-½
350 35
4-½ 400 45
3-½
2500 450 250
10-
1: 1K:
100:
7-½ 3.5 3.0
7-½
5.0 0.5
5-½ 10 30
5-½
300 50
4-½
500 50
4-½ 750 75
3-½
3500 450 250
10-
1: 1K:
100:
7-½
4.0 3.0
7-½ 11 1.5
6-½ 30 3.5
5-½
500 50
3-½ 4500 650 400
1-10: 100: 1K:
6-½
8.0 10
5-½ 17 22
4-½ 50 50
3-½
500 1000 1000
2-½ 8500 8500 8500
16
Measurements into
Azero
100V 300V
On
0.7 0.2 9.5 (8)
0.1 0.8 0.35 42 (33)
0.3 2.5 1.0 50 (40)
0.7 3.5 1.5 120 (100)
1.5 4.0 3.5 205 (165)
7.0 70 35 218 (215)
95 900 410 270 (270)
 
0.4 9.5 (8)
 
0.6 42 (33)
 
1.5 50 (40)
 
5.5 120 (100)
 
6.5 205 (165)
 
15 218 (215)
 
270 (270)
3A

1.2 0.4 9.5 (8)

1.4 0.9 42 (33)

10 4.0 50 (40)

20 4.0 120 (100)

20 4.0 205 (165)

25 110 218 (215)

375 270 (270)
10K:
0.5 0.5 5 (4)
23.5
0.5 0.7
(18.5)
10 50 26.5 (21)
10 63 80 (60)
15 70 140 (110)
30 100 200 (195)
250 210 (205)
10K:

0.5 0.5 2.5 (2.0)

0.7 1.5 12.7(10)

2.1 3.5 14 (11.2)

13 30 46.5 (37)

400 129 (125)
2K:

10 8.0 2.5 (2.0)

25 28 12 (9.5)

50 50 14 (11.2)

1500 35 (30)

8500 84 (84)
13
Buffer Measurement to PC
(Rdg/s)
Azero
Enet
Off
12 (10) 86.3 (104)
59.8 (49.5) 19.4 (22.7)
60 (50) 19.4 (22.7)
295 (235) 7.6 (8.3)
935 (750) 1.40 (1.80)
6,200 (5,500) 0.55 (0.57)
14,600 (14,250) 0.50 (0.5)
12 (10) 87.0 (105)
59.8 (49.5) 21.0 (24.3)
60 (50) 21.0 (24.3)
295 (235) 7.6 (8.3)
935 (750) 1.40 (1.80)
6,200 (5,500) 0.55 (0.57)
14,100 (13,700) 0.50 (0.5)
12 (10) 88 (103)
59.8 (49.5) 21.0 (22.7)
60 (50) 19.4 (22.7)
295 (235) 7.6 (8.3)
935 (750) 1.40 (1.80)
6,200 (5,500) 0.55 (0.57)
14,100 (13,700) 0.50 (0.5)
5.9 (4.7) 173 (206)
29 (23) 39 (46)
30 (24) 39 (46)
120 (95) 12.3 (14.5)
285 (225) 6.2 (7.2)
580 (565) 4.2 (4.4)
650 (645) 4.2 (4.4)
2.9 (2.3) 343 (427)
14 (11.2) 77 (95)
15 (12) 70 (86.5)
56 (44) 22.7 (25)
215 (210) 6.7 (6.7)
2.9 (2.3) 347 (430)
13 (10) 80 (99)
15 (12) 70 (86.5)
45 (36) 27 (33)
115 (110) 10.7 (10.7)
13
(ms / Rdg)
AzeroOff
GPIB USB
86.1 (102.8) 86.3 (103.1)
19.5 (22.8) 19.9 (23.2)
19.5 (22.8) 19.9 (23.2)
6.2 (6.8) 6.4 (7.0)
1.50 (1.80) 1.60 (2.30)
0.65 (0.67) 0.75 (0.77)
0.60 (0.60) 0.70 (0.70)
86.1 (103) 86.5 (104)
19.5 (22.8) 19.9 (23.2)
19.5 (22.8) 19.9 (23.2)
6.2 (6.8) 6.4 (7.0)
1.50 (1.80) 1.60 (2.30)
0.65 (0.67) 0.75 (0.77)
0.60 (0.60) 0.70 (0.70)
86.1 (102.8) 86.3 (103.1)
19.5 (22.8) 19.8 (23.1)
19.5 (22.8) 19.8 (23.1)
6.2 (6.8) 6.4 (7.0)
1.50 (1.80) 1.60 (2.30)
0.65 (0.67) 0.75 (0.77)
0.60 (0.60) 0.70 (0.70)
173 (206) 173 (206)
39 (46) 39 (46)
39 (46) 39 (46)
11.3 (13.3) 11.7 (13.7)
6.3 (7.3) 6.5 (7.6)
4.3 (4.5) 4.6 (4.8)
4.3 (4.5) 4.6 (4.8)
341 (425) 342 (426)
74 (92) 75 (93)
70 (86.5) 70 (86.5)
20.5 (23) 21.1 (24)
6.8 (6.8) 7 (7)
345 (428) 346 (429)
77 (95) 78 (97)
70 (86.5) 70 (86.5)
25 (31) 26 (32)
10.7 (10.7) 11 (11)
Rev A 9/14/07