Installation
2-5
2.4.1 Channel Number
The channel number of the Load is determined by the module location in the Mainframe
starting from the farthest left slot. As some Load (63610-80-20) has two channels in one
module, channel 1 and 2 are always on the farthest left slot of the Mainframe, and channel 9
and 10 on the farthest right. The channel number is fixed for Mainframe even the Load
module is empty. Figure 2-3 shows the channel assignments for a Chroma 63600-5
Mainframe containing two Loads of 63630-80-60 single channel module, and two Loads of
63610-80-20 dual channel module. Channel number is automatically assigned to 1, 3, 5, 6, 7,
and 8. Channel 2 and 4 are skipped as single module is applied.
Figure 2-3 Example of Channel Number
2.5 Installing the Mainframe
The Electronic Load can operate well within temperature range from 0 to 40 degree C.
However, you must install the Electronic Load in an area that has enough space around for
adequate air flowing through and escaping from the back. You must leave at least 10 cm (4
inch) space above the unit for air circulation. Note that the unit foot stock has enough vertical
space for air circulation when it is stacked. The Mainframe foot stock can be removed for
rack mount.
If you install the equipment on top of your Electronic Load in a cabinet, you must use a filter
panel above the unit to ensure adequate air circulation. A 1U (EIA standard) panel is
sufficient.
2.5.1 Line Voltage
The Electronic Load can operate with a 115/230 Vac input as indicated on the rear LINE
label. The detailed line voltage input range is shown in section 1.4
. The
Electronic Load can automatically switch correct line voltage range to correspond to your
nominal line voltage, when you connect the power cord to correct line voltage and turn on the
Electronic Load.
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