参数资料
型号: V125
厂商: Martel Electronics
文件页数: 3/4页
文件大小: 0K
描述: VOLTMETER LCD 200MV 0.5" DIG HT
产品目录绘图: V125 and V600
标准包装: 25
系列: V
类型: 伏特表
测量范围: 200mVDC
显示器样式: 黑色字符,灰色背景
显示器类型: LCD
显示器正面尺寸: 1.22" L x 0.55" W(31.0 x 14.0mm)
显示器位数: 3.5
显示器位数 - 高度: 0.492"(12.50mm)
背光:
安装类型: 面板安装
端子: PC 引脚
电源电压: 7 ~ 12VDC
产品目录页面: 2862 (CN2011-ZH PDF)
相关产品: 227-1062-ND - MOD VINCULUM EVAL KIT
其它名称: 227-1060
V 125
CIRCUIT DIAGRAM
3? Digit LCD Voltmeter Module
V+
1
1
IC1
INHI
INLO
3
4
L1
V+
R2
1M
R6
100k
R5
3k
R1
300k
C3
100nF
C1
68nF
C2
220nF
C4
100nF
R3 100k
C5
100pF
27
28
29
31
30
32
34
33
35
36
40
39
38
INT
BUF
A/Z
IN HI
IN LO
COM
CREF+
CREF-
REF LO
REF HI
OSC1
OSC2
OSC3
V+
a1
b1
c1
d1
e1
f1
g1
a2
b2
c2
d2
e2
f2
g2
a3
b3
c3
d3
e3
f3
g3
bc4
POL
V- TEST BP
26 37
5
4
3
2
8
6
7
12
11
10
9
14
13
25
23
16
24
15
18
17
22
19
20
21
24
23
21
20
19
25
22
28
27
17
16
14
1
26
3
2
12
11
10
4
5
8
7
15
a1
b1
c1
d1
e1
f1
g1
a2
b2
c2
d2
e2
f2
g2
a3
b3
c3
d3
e3
f3
g3
ab4
POL
COM
LCD1
DP1
DP2
DP3
LOBAT
199.9
18
19.99
13
1.999
9
6
R9
1M
R8
1M
R7
1M
6
7
8
DP1
DP2
DP3
V+
R4
1.5k
R10
100k
R11
100k
V-
2
Q1
3904
5
XDP
PIN FUNCTIONS
1. V+ Positive power supply connection.
2. V- Negative power supply connection.
3. INHI Positive measuring input with reference to IN LO.
4. INLO Negative measuring input with reference to IN HI.
5. XDP Connect to DP1, 2 or 3 to display required decimal point.
6. DP1 Connect to XDP to display Decimal Point 1 (199.9).
7. DP2 Connect to XDP to display Decimal Point 2 (19.99).
8. DP3 Connect to XDP to display Decimal Point 3 (1.999).
Solder Links:
L1 Normally Closed, connects COM to INLO.
Analogue inputs must be no closer than 1V
to either the positive or negative supply.
www.martelmeters.com
page 3 of 4
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