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인증된 전문가에게 직접 연결
인증된 전문가에게 직접 연결
(Full specifications can be found on datasheet)
Linearity better than 20 ppm (5-dial model)
Input impedance: for 1455-A 10 kΩ & 1455-B, 1455-BH 100 kΩ
High-frequency model, down 3 dB at 7.5 MHz
BASIC SPECIFICATIONS
|
1455-A
|
1455-B
|
1455-BH
|
|
| Number of Dials: |
4
|
5
|
5
|
| Input Resistance: |
10 kΩ
|
10 kΩ
|
100 kΩ
|
| Accuracy of Input R: (ppm) |
150
|
150
|
150
|
| Input Voltage Rating: |
230 V
|
230 V
|
700 V
|
| Frequency Response: |
850 kHz
|
690 kHz
|
69 kHz
|
| Resolution: (ppm of input) |
100
|
10
|
10
|
| Linearity (sum of A & B) | |||
| A. Absolute Linearity | |||
| 0.00001 to 0.00010 |
n/a
|
0.03
|
0.02
|
| 0.00010 to 0.00100 |
0.3
|
0.3
|
0.2
|
| 0.00100 to 0.01000 |
2
|
3
|
2
|
| 0.01000 to 0.10000 |
15
|
10
|
10
|
| 0.10000 to 1.00000 |
30
|
20
|
20
|
| B. Terminal Linearity (ppm of input). | |||
| FOUR-TERMINAL (low output terminal) |
0.04
|
0.04
|
0.004
|
| THREE-TERMINAL |
0.2
|
0.2
|
0.02
|
The GR 1455 Kelvin-Varley Voltage Dividers provide accurately known voltage ratios from 0.00001 to 1.00000 for use in many common measurements:
A resistive divider of the Kelvin-Varley type, the 1455 has precision resistors throughout (rather than in selected positions only) for over-all high accuracy. Linearity is as low as 0.02 ppm of input.
