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參數資料
| 型號： | ES51918 |
| 廠商： | Electronic Theatre Controls, Inc. |
| 英文描述： | 11,000 Counts Auto DMM |
| 中文描述： | 11,000計數汽車萬用表 |
| 文件頁數： | 13/32頁 |
| 文件大?。?/td> | 510K |
| 代理商： | ES51918 |
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v1.02 05/06/30
13
ES51918
11,000 Counts Auto DMM
1.7
Frequency counter
The time base of the frequency counter is derived from an external crystal oscillator by
4,000,000
F
osc
T
counter
=
where F
osc
is the frequency of the crystal oscillator. Thus, the counter has a 1-second
time base when a 4MHz oscillator is used. The frequency counter can select the proper
range automatically or manually. Auto-range operation extends over six decades, from
1111.1Hz to 110.00MHz. The following table summarizes the full-scale range of the
frequency counter.
Range
FR1
1
FR2
FR3
FR4
FR5
FR6
Full Scale
1111.1Hz
11.000KHz
110.00KHz
1.1000MHz
11.000MHz
110.00MHz
NOTE:
1
In the range FR1, if input frequency is less than 11.1Hz, ES51918 will show
0.0Hz
.
1.8
Temperature measurement mode
Temperature measurement mode takes input signal from ADP pin and reference voltage
from (VA+ - VA-). ES51918 has a built-in
℃
-to-
℉
scale translation circuit, and only
needs an external
℃
scale application circuit. The application circuit for
℉
scale is
not required. In temperature measurement mode, the default range is 1100.0
℃
or
℉
.
VBAR pin is used to control the second decimal point (DP2) on the LCD panel. When
VBAR is LOW, DP2 is turned on and the first decimal point (DP1) is turned off.
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| ES51918_11 | 制造商:CYRUSTEK 制造商全稱:CYRUSTEK 功能描述:11,000 Counts Auto DMM |
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