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参数资料
| 型号： | DMS-EB-C |
| 厂商： | Murata Power Solutions Inc |
| 文件页数： | 3/4页 |
| 文件大小： | 0K |
| 描述： | APPLICATION BRD FOR DMS-30/40 |
| 标准包装： | 12 |
| 系列： | * |
| 产品目录页面： | 2856 (CN2011-ZH PDF) |
| 其它名称： | 811-1123 |
DMS-EB
Multi-Purpose Application Board for DMS-30 & DMS-40 Series Meters
APPLICATIONS
1. Decimal Point Placement: DATEL ships the DMS-EB with all decimal
point solder gaps (SG1, SG2, SG3 and SG17) open. To enable a speci?c
decimal point, close its respective solder gap with solder. When reas-
signing decimal places for subsequent applications, remember to
open previously closed solder gaps.
Close SG1 for 1.999 (DP1)
Close SG2 for 19.99 (DP2)
Close SG3 for 199.9 (DP3)
Close SG17 for 1999.9 (DP4 on DMS-40)
2. Display Test: Tie J1, pin 4 (TEST OUT) to pin 3 (TEST IN) to test the
display of the DMS-30. Do not leave the meter in the test mode for
more than 10 seconds. Display test is not available on backlit models.
3. Battery Operation: Open SG4 and install U1 (LM7805CT) with its
metal tab facing down as shown Figure 2. Allowable input power
ranges (J1, pins 5 and 6) are as follows:
DMS-30/40PC-X-XS +7.5 to +12.6V
Using Full Range Span Adjustment (DMS-30 Only)
5.1. For DMS-30-1 and -2 models: Con?guring the DMS-EB for span
adjustment is simply a matter of installing resistor R3 and potenti-
ometer R4, opening SG13 and then closing SG8, SG11 and SG12.
5.2. For DMS-30-0 models: Span adjustment requires that you open
SG8, SG11 (if closed) and SG13 and then close SG7, SG9 and
SG12. Then install R3 and R4.
Adjust span as desired. DMS-30-1 and -2 span adjustment range
is typically +10% and –5%. The DMS-30-0 has a much wider span
adjust, however, it should be limited to ±10% for optimum accuracy.
6. Measuring Input Voltages Greater than 1.999Vdc (Use DMS-30-1
Only): If possible, the resistors used for R1 and R2 should be ±1%
metal-?lm types with TCR's less than 100ppm/°C. More information
on selecting 1% resistors can be found in Application Note 14.
CAUTION: Do not exceed 250Vdc input signals.
DMS-30/40PC-X-XL
DMS-30/40LCD-X-5
DMS-30/40LCD-X-5B
+7.5 to +18.0V
+7.5 to +32.0V
+7.5 to +12.6V
6.1. Open SG10. For applications in which input voltages exceed
±100Vdc, also cut the 2 adjoining traces.
6.2. Con?gure the DMS-EB for span adjust using the procedure revi-
ously outlined for the DMS-30-1 version.
6.3. Calculate values for R1 and R2 as follows:
U1
Metal tab
points down
R1
SG10
SG3
xxx.x
SG2
xx.xx
SG1
x.xxx
Figure 2. Installing U1
4. Differential Input Signals (Signal Referenced to Power Source):
Open SG5. Apply the input signal to pin 1, (+) IN HI, and pin 2, (–) IN
LO, of J1.
Note: Common mode voltage must not exceed ±2Vdc. Differential
signals are de?ned as inputs whose two terminals are both above and
below J1, pin 6 (GROUND).
5. Span (Gain) and Zero (Offset) Adjustments: Locations are included
on the DMS-EB to add user-supplied potentiometers R4 and R5, and
resistor R3. Recommended values for these components are as fol-
lows: R3: 10.5KΩ, 1%, 1/8W metal ?lm; R4: 2KΩ, 10-20-turns; R5:
To measure input voltages
greater than ±100Vdc,
open SG10 and also cut
these two etch paths.
Figure 3. Installing R1
A typical value for R1 is 1MΩ. The sum of R1 + R2 should be
between 50kΩ and 10MΩ.
R2 = (FSI x R1) / ( |V IN | - FSI)
Where:
FSI = The attenuated voltage, between the meter's (–) IN LO and
(+) IN HI pins, needed to achieve the desired display readings
V IN = Input voltage at J1 (between pins 1 and 2)
50KΩ, 10-20 turns. Vishay's T93YA series potentiometers are suitable
for this application. Make sure to use only RoHS-compliant compo-
nents and solders when making modi?cations to DMS-EB.
Once installed, these components permit the span and zero adjust-
ments described in the following sections. R3 and R4 provide span
adjust, while R5 applies and offset voltage to (-) IN LO (J1, pin 2).
www.murata-ps.com/support
MPM_DMS-EB.B02 Page 3 of 4
相关PDF资料 |
PDF描述 |
|---|---|
| DMS-EB-DC/DC-C | APPLICATION BRD W/ISO FOR DMS-30 |
| DMS-EB-RMS-C | CONV BOARD AC TO RMS FOR DMS-30 |
| DMS-EB2-C | APPLICATION BRD FOR DMS-20 METER |
| DMS-PS1-CM-C | MODULE PS 5V 1A CHASSIS-MOUNT |
| DMT-8-15 | XFRMR 115/230V 5V 4A 8VA 3OUT |
相关代理商/技术参数 |
参数描述 |
|---|---|
| DMS-EB-DC/DC | 功能描述:数字面板表 DC-DC Converter and Isolation Board 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-EB-DC/DC-C | 功能描述:数字面板表 DC-DC Converter and Isolation Board 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-EB-HTB | 制造商:MURATA-PS 制造商全称:Murata Power Solutions Inc. 功能描述:3? Digit, LED Display Low-Power, Miniature Digital Panel Voltmeters |
| DMS-EB-HTBC-C | 功能描述:数字面板表 -55 to +150oC Temp Sensor Boards 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-EB-HTBF-C | 功能描述:数字面板表 -67 to +199.9oF Temp Sensor Boards 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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