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| 型号： | DMS-20PC-3-PGL-C |
| 厂商： | Murata Power Solutions Inc |
| 文件页数： | 3/6页 |
| 文件大小： | 0K |
| 描述： | DPM LED 200V 3.5DIGIT LO-PWR GRN |
| 产品培训模块： | DMS-20PC Series |
| 产品目录绘图： | Digital Panel Meter |
| 特色产品： | DMS-20PC Series Panel Meters |
| 3D 型号： | DMS-20PC-x.pdf DMS-20PC-x.sldprt DMS-20PC-x.stp DMS-20PC-x.igs |
| 标准包装： | 12 |
| 系列： | DMS-20PC |
| 类型： | 伏特表 |
| 测量范围： | ±200V |
| 显示器样式： | 绿色字符，黑色背景 |
| 显示器类型： | LED |
| 显示器正面尺寸： | 1.30" L x 0.80" W（33.0 x 20.3mm） |
| 显示器位数： | 3.5 |
| 显示器位数 - 高度： | 0.370"（9.40mm） |
| 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： | 2856 (CN2011-ZH PDF) |
| 其它名称： | 811-1973 |
DMS-20PC Series
3? Digit, LED Display, Low-Cost, Subminiature
Digital Panel Voltmeters
4. DISPLAY TEST/HOLD (Pin 9) Function : Pin 9 is a dual-function
pin. On all standard models (without "-H" suf?x), tying pin 9 to pin 1
8. Suggested Mating Connectors:
Panel mounted:
(+5V SUPPLY) activates the meter's DISPLAY TEST feature. All display
segments, except the decimal points, will be illuminated. The display
will show "1888" ("–1888" if a negative input signal is present). Do
not leave the meter in the test mode for more than 10 seconds as
this will cause the meter's operating temperature to rise and possibly
affect its performance. Pin 9 must be left open when the test function
Connector housing
Terminal type
Crimping tool
Wire size
Insulation diameter
Stripping length
DATEL P/N 4320-01069-0
DATEL P/N 4400-01032-0
DATEL P/N 39-2099000
22 to 26 AWG
0.062" (1.57mm) maximum
0.100 to 0.125" (2.54 to 3.17mm)
is not being used.
On models with the "-H" suf?x (DMS-20PC-1-RS-H for example), pin
9 serves as a DISPLAY HOLD control pin. Tying pin 9 to +5V SUPPLY
(pin 1) on these models will hold or "freeze" the current display read-
ing inde?nitely. Pin 9 must also be left open when the hold function is
not being used. After disabling DISPLAY HOLD, allow the meter a full
10 seconds to resume normal calibrated operation before holding a
new reading.
The DISPLAY TEST or DISPLAY HOLD pin should normally be con-
nected, via a selector switch, to pin 1 (+5V SUPPLY). If automatic,
logic-controlled operation is desired, only PNP or MOSFET transis-
tors should be used. The base or gate of these transistors should be
driven suf?ciently hard to bring pin 9 within 0.05V of +5V SUPPLY.
5. DISPLAY ENABLE (Pin 2) Function : On all models, tying pin 2 to
pin 1 (+5V SUPPLY) applies full power to the LED display. This is the
normal mode of operating the meter. Leaving DISPLAY ENABLE open
(no connection), only turns off the LED display. The meter's analog-
to-digital converter continues to sample the input signal. Total current
consumption with the display off is approximately 400μA (0.4mA).
This is a very useful feature if the meter is used in battery-powered
equipment.
With the exception of the low-power red LED models (DMS-20PC-X-
RL), a regulated voltage lower than +5V SUPPLY can be used to dim
the display intensity. Display intensity control is best performed with
the high brightness, red LED, DMS-20PC-X-RH model. All low-power
red LED models must have DISPLAY ENABLE tied directly to pin 1
(+5V SUPPLY). Voltages applied to DISPLAY ENABLE must never be
greater than +5V SUPPLY.
6. Gain Adjust : There is a gain-adjust potentiometer on the back of
Board mounted:
Socket DATEL P/N 4320-01074-0
APPLICATIONS
DMS-20PC meters are highly versatile devices that can be used in
hundreds of applications. The application circuits chosen for this section
are ones that have historically received many inquiries.
The schematic in Figure 1 shows that the meter's high-impedance input
consists of an op amp powered from a ±5Vdc power supply (the –5V is
internally generated). One can easily see why input signals applied to (–)
INPUT LO and (+) INPUT HI have to be kept within the power supply rails
of ±5V. Also note that only pin 11 has a current-limiting 909kΩ series
resistor. High input voltages that have a common ground with pin 3 (5V
RETURN) should only be applied to pin 11 ((+) INPUT HI) and never to pin
12. In these high-voltage cases, pin 12 should always be tied to pin 3
(5V RETURN).
The schematic also shows that pin 3 is the meter's zero-volt reference
point — regardless of the type of power or signal source used. This is
an important point to keep in mind when a digital or analog multimeter
is used to make system measurements. The multimeter's negative lead
(usually the black one) must be connected to pin 3 (5V RETURN).
1. Single-Ended Input Con?gurations : True single-ended measure-
ments can be made with any DMS-20PC meter. 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 (–)
INPUT LO (pin 12).
each meter. It has approximately ±50 counts (±2.5%) range of
adjustment. Since these devices essentially have no zero/offset
errors, a gain adjustment is effectively an overall accuracy adjust-
+
11
(+) IN HI
DMS-20PC-1
8
REF OUT
ment. Though they may be performed at any point (except zero),
accuracy adjustments are most effective when performed with
V IN
higher level input signals. The circuit shown in Figure 10 provides
±10% range of adjustment.
–
12
(–) IN LO
7
REF IN
7. Soldering Methods : All models in the DMS-20PC Series easily with-
stand most common wave soldering operations. We recommend,
1
+5V SUP
2
DISPLAY
ENABLE
6
DP1
3
5V RET
however, that 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 solders.
85-264Vac
AC to DC Converter
Figure 2. Single-Ended Input Con?guration
www.murata-ps.com/support
MPM_DMS_20PC.D07 Page 3 of 6
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相关代理商/技术参数 |
参数描述 |
|---|---|
| DMS-20PC-3RH | 制造商:未知厂家 制造商全称:未知厂家 功能描述:3 Digit, LED Display Low-Cost, Subminiature Digital Panel Voltmeters |
| DMS-20PC-3-RH | 功能描述:数字面板表 3.5 Digit+-200VInput Hi-Intense Red 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-20PC-3-RH-C | 功能描述:数字面板表 3.5 Digit+-200VInput Hi-Intense Red 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-20PC-3RL | 制造商:未知厂家 制造商全称:未知厂家 功能描述:3 Digit, LED Display Low-Cost, Subminiature Digital Panel Voltmeters |
| DMS-20PC-3-RL | 功能描述:数字面板表 3.5 Digit+-200VInput Low Power Red 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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