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参数资料
| 型号： | DMS-30LCD-1-5-C |
| 厂商： | Murata Power Solutions Inc |
| 文件页数： | 3/6页 |
| 文件大小： | 0K |
| 描述： | DPM LCD 2VDC 3.5DIGIT 5V SUPPLY |
| 产品目录绘图： | Digital Panel Meter |
| 标准包装： | 12 |
| 系列： | DMS-30LCD |
| 类型： | 伏特表 |
| 测量范围： | ±2V |
| 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： | 2.09" L x 0.84" W（53.1 x 21.3mm） |
| 显示器位数： | 3.5 |
| 显示器位数 - 高度： | 0.402"（10.20mm） |
| 背光： | 无 |
| 安装类型： | 面板安装 |
| 端子： | PC 引脚 |
| 电源电压： | 4.75 ~ 5.25V |
| 产品目录页面： | 2855 (CN2011-ZH PDF) |
| 其它名称： | 811-1037 |
DMS-30LCD Series
3? Digit, LCD Display Digital Panel Voltmeters
3. Decimal Point Placement: The location of the decimal point is user-
selectable, and the decimal point control pins (DP1-DP3) are active low
functions. Select the appropriate decimal point by tying the appropriate
pin (pin 4, 5 or 6) to pin 3 (5V RETURN/
–BATTERY). Unused decimal point location pins should be left open.
For 5V-powered models, the decimal location pins are TTL compatible
and may be hard wired as described above or driven with 5V TTL logic
gates.
8. Soldering Methods: All models in the DMS-30LCD Series easily
withstand most common wave soldering operations. We recommend,
however, you evaluate the effects your particular soldering techniques
may have on the meter’s plastic case and high-precision electrical
performance. We recommend the use of no-clean lead-free solders.
9. Suggested Mating Connectors:
Panel mounted:
4. REFERENCE OUTPUT (Pin 8) and INPUT (Pin 7): Pin 8 is a preci-
sion reference actively trimmed at the factory. In normal operation, pin
8 must be tied to pin 7 to achieve all listed accuracy and drift speci?ca-
tions.
5. DISPLAY TEST (Pin 2): (Not available on backlit models)
Connect DISPLAY TEST (pin 2) to +5V SUPPLY/+BATTERY
(pin 1) to activate. All LCD segments, exclusive of the decimal points,
will be momentarily enabled. Do not leave the unit in the TEST
mode for more than 10 seconds as this will damage the LCD seg-
ments.
Connector housing
Terminal type
Wire size
Insulation diameter
Stripping length
Board mounted:
Socket
APPLICATIONS
DATEL P/N 4320-01069-0
DATEL P/N 4400-01032-0
22 to 26 AWG
0.062 ” (1.57mm) maximum
0.100 to 0.125 ” (2.54 to 3.17mm)
DATEL P/N 4320-01074-0
6. BACKLIGHT (Pin 2) Function: For backlit models, grounding pin 2
(i.e. connecting it to pin 3) turns on the backlighting LED’s. 9V-pow-
ered backlit models function with supply voltages up to +14V, however,
activating the backlight with voltages greater than 9.2V can damage
the meter. Therefore, a 1/4 Watt series resistor must be installed
between pins 3 and 2 in these situations. The value of the series resis-
tor is determined using the following formula:
DMS-30LCD meters are available in either 5V-powered or 9V-powered
models. 9V devices operate directly from 7.5V to 14V supplies (usually
batteries) without the need for external voltage regulators. 9V devices,
however, can not be used to measure voltages referenced to the negative
battery terminal (pin 3) because the minus input to the meter (pin 12, (–)
INPUT LO) must always be at least 1.5V above pin 3. 9V-powered meters
can only be used to make differential and not single-ended measurements.
R Series =
+BATTERY – 9.2V
0.035
Ohms
5V-powered devices operate from any well-regulated +5V supply and will
accurately measure voltages both above and below pin 3 (5V RETURN) in
either single-ended or differential con?gurations.
Example: If +BATTERY (pin 1 with respect to pin 3) is +12.6V,
1. Single-Ended Input Con?gurations: True single-ended measure-
R Series =
+12.6 – 9.2V
0.035
Ohms
ments can only be made with 5V-powered meters. The circuit of Figure
2 avoids problems normally associated with ground-loop currents.
Separate ground runs should be used for 5V RETURN (pin 3) and (–)
R Series = 97 Ohms
INPUT LO (pin 12).
In any backlit application, including those with supply voltages
< 9.2V, the current drawn by the backlight (and therefore the current
drawn by the meter) can be reduced by installing a 1/4 Watt resistor
+
11
(+) IN HI
DMS-30LCD-1-5
8
REF OUT
between pins 3 and 2. The brightness of the backlight will be reduced
V IN
proportionately.
–
12
(–) IN LO
7
REF IN
7. Gain Adjust: There is a gain-adjust potentiometer on the back of each
meter. It has approximately ±50 counts (±2.5%) of adjustment range.
1
+5V SUP
6
DP1
3
5V RET
Since these devices essentially have no zero/offset errors, a gain
adjustment is effectively an overall accuracy adjustment. Though they
may be performed at any point (except zero), accuracy adjustments
are most effective when performed with higher level input signals.
Refer to Figure 9 for applications requiring greater ( ±10%) gain adjust-
ments.
120 VAC
AC to DC Converter
Figure 2. Single-Ended Input Con?guration
(5V-Powered Models)
www.murata-ps.com/dpm
06 Jan 2011
email: sales@murata-ps.com
MPM_DMS30LCD.D02 Page 3 of 6
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| DMS-30LCD-1-9 | 功能描述:数字面板表 3.5 Digit Volt Meter +-2V / +9V RoHS:否 制造商:Murata Power Solutions 设备类型:AC Voltmeters 显示器类型:LED, 3 Digit, Red 工作电源电压:85 VAC to 264 VAC 工作电源电流:50 mArms 输入电流:50 mA 输入频率: 输入电压:120 VAC 系列:DMS-20PC-1-LM |
| DMS-30LCD-1-9B | 功能描述:数字面板表 3.5 Digit Volt Meter +-2V / +9V Backlit RoHS:否 制造商:Murata Power Solutions 设备类型:AC Voltmeters 显示器类型:LED, 3 Digit, Red 工作电源电压:85 VAC to 264 VAC 工作电源电流:50 mArms 输入电流:50 mA 输入频率: 输入电压:120 VAC 系列:DMS-20PC-1-LM |
| DMS-30LCD-1-9B-C | 功能描述:数字面板表 3.5 Digit Volt Meter +-2V / +9V Backlit RoHS:否 制造商:Murata Power Solutions 设备类型:AC Voltmeters 显示器类型:LED, 3 Digit, Red 工作电源电压:85 VAC to 264 VAC 工作电源电流:50 mArms 输入电流:50 mA 输入频率: 输入电压:120 VAC 系列:DMS-20PC-1-LM |
| DMS-30LCD-1-9-C | 功能描述:数字面板表 3.5 Digit Volt Meter +-2V / +9V RoHS:否 制造商:Murata Power Solutions 设备类型:AC Voltmeters 显示器类型:LED, 3 Digit, Red 工作电源电压:85 VAC to 264 VAC 工作电源电流:50 mArms 输入电流:50 mA 输入频率: 输入电压:120 VAC 系列:DMS-20PC-1-LM |
| DMS-30LCD-2-5 | 功能描述:数字面板表 3.5 Digit Volt Meter +-20V / +5V RoHS:否 制造商:Murata Power Solutions 设备类型:AC Voltmeters 显示器类型:LED, 3 Digit, Red 工作电源电压:85 VAC to 264 VAC 工作电源电流:50 mArms 输入电流:50 mA 输入频率: 输入电压:120 VAC 系列:DMS-20PC-1-LM |
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