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22
Chapter 2
2.5.3
Input Power Connector
Accepts a standard line cord for AC input. Also selects one of four AC input settings:
100V, 120V, 220V, and 240V. The cord must be removed to change the setting. A
small screwdriver will open the top of the module and expose the rotary switch.
Select the range that is closest to your expected nominal RMS line voltage. The
voltage selection is set for 120 VAC prior to shipping. A caution sticker is then
placed over the input power connector to help insure the customer checks for proper
voltage.
2.5.4
GND Post
Provides access to chassis ground, which is also an earth ground as long as a standard
3-wire line cord is used. This is a protective conductor terminal to be used to achieve
chassis grounding requirements when the main connectors don't provide an earth
ground terminal. Use a minimum of 18 gauge wire to connect to this terminal.
2.6
Power Supplies
AC power is supplied through the rear panel input power connector which provides
in-line transient protection and RF filtering. The input power connector contains the
fuses and the switch to select series or parallel connection of the transformer
primaries for operation at 100 VAC, 120 VAC, 220 VAC, or 240 VAC.
2.6.1
Module Power Supplies
There are separate module power supplies for each "slot" which contains either a
laser driver and/or a TEC controller. These linear supplies provide analog and digital
circuit power to each module as well as laser/TEC drive and photodiode bias.
Artisan Technology Group - Quality Instrumentation ... Guaranteed | (888) 88-SOURCE | www.artisantg.com
System Operation
CAUTION
Do not exceed 250 VAC on the line input.
Do not operate with a line voltage that is not within ±10%
of the line setting. Too low of an input voltage may cause
excessive ripple on the DC supplies. Too high of an input
voltage will cause excessive heating.
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