Problem:
I want to build a custom power connection for the back of my UltraBright monitor. I need the parts required and what pins to connect.
Solution:
For more details and diagrams, see the attached PDF, 503U_703U_Power_8-pin_Connector_2017-07-07.pdf
External DC power for 503U & 703U should normally be supplied through the LEMO input connector, requiring 12Vdc minimum to 34V max. The 8-pin rear power connector normally accepts the accessory battery brackets. This document describes how to attach to the 8-pin connector to access the Low Voltage battery inputs (6V to 12Vdc max).
The 8-pin connector on the monitor is a “Molex Micro-Fit BMI (Blind Mating Interface) header”.
Molex Part number: 44432-0801 or 0444320801. Link to Molex datasheets:
http://www.molex.com/molex/products/datasheet.jsp?part=active/0444320801_PCB_HEADERS.xml
The mating connector to plug into the monitor requires a Housing and two Wire Terminals:
Housing:
Molex Part Number: 43025-0800 or 0430250800. Link to Molex datasheets:
http://www.molex.com/molex/products/datasheet.jsp?part=active/0430250800_CRIMP_HOUSINGS.xml
List of distributors:
https://octopart.com/search?q=43025-0800
Wire Terminals (tin):
Use wire size: 20AWG
Molex Part Number: 43030-0001 Link to Molex datasheets:
http://www.molex.com/molex/products/datasheet.jsp?part=active/0430300001_CRIMP_TERMINALS.xml
List of distributors:
https://octopart.com/43030-0001-molex-232073
Rear Connector Pin Assignments
| Pin |
Pin Name |
Description |
Usage Warnings |
| 1 | HV Battery (+) | High Voltage battery input 12.0V minimum, 34.0V maximum |
Exceeding 37Vdc will cause monitor damage |
| 2 | Do Not Connect |
Do Not Connect (processor input for |
Accidentally shorting to battery voltage may cause monitor damage. |
| 3 | LV Battery2 Data | Low Voltage battery 2 Data NPF (L-series) Communication data |
Accidentally shorting to battery voltage may cause monitor damage |
| 4 | LV Battery2 (+) | Low Voltage battery 2 input 6.0V minimum, 12.0V maximum |
Exceeding 14Vdc will cause monitor damage |
| 5 | Ground (-) | ||
| 6 | Do Not Connect |
Do Not Connect (processor input for |
Accidentally shorting to battery voltage may cause monitor damage |
| 7 | LV Battery1 Data |
Low Voltage battery 1 Data |
Exceeding 14Vdc will cause monitor damage |
| 8 | LV Battery1 (+) | Low Voltage battery 1 input 6.0V minimum, 12.0V maximum |
Exceeding 14Vdc will cause monitor damage |
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