Orbit Network Voltage Drop
All Orbit Modules are designed to work from a supply voltage of 4.75 V dc to 5.25 V dc and care must be taken to
ensure that all modules, especially those furthest from the power supply, have the correct working voltage applied.
When being used with a PC power supply, it is unlikely that the upper voltage limit will be exceeded, but the possibility
of Orbit Module voltages dropping below the lower voltage limit can exist. Connecting cable length and resistance will
contribute to a drop in voltage.
If any doubt exists, a digital voltmeter should be used to check the voltage at the last Orbit Module in the Orbit Network.
This can be done by removing the terminator plug and measuring the voltage between pins 6 and 9 on the socket, as
shown below.
If the voltage is below 4.75 V dc, a power supply (PSIM) may be required.
5.0: Setting up the Orbit Measurement System
5.0:
Setting up the Orbit Measurement System
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Part No. 502566 Issue 4
