AMETEK SLH Series RevC - Manual (Page 41)

Sorensen SLH-Series DC High Power Electronic Load Operation
3.3
NORMAL OPERATING MODES
In the following instructions, the numbers within parentheses refer to the front panel
components of the SLH-series DC plug-in-module, as labeled in Figure 3-1.
CC Mode
CC mode can be either static (fixed DC level) or dynamic (two levels with timing and slew
rates programmed). Dynamic mode is described later in this Section. In static mode, two
levels can be set to allow for quick switching between two current levels.
1. Press the MODE key (3), until the CC LED (3) is lit.
2. Press the PRES key (7) to view the programmed values. The load has a high and low
setting to allow for quick changes in load setting. The high level must be higher than
the low level; in setting the values below, the load will not allow the HIGH level to be
lower than the LOW level.
a. To set the high level, press the HIGH key (16) in the lower part of the settings
area. Use the inc/dec arrows to set the desired level.
b. To set the low level, press the LOW key (16) on the bottom row of the settings
area. Use the inc/dec arrows to set the desired level.
3. To exit the preset mode, press the PRES key until the LED is green (power/watts
displayed) or not lit.
4. Select the desired level CC mode by pressing the LEVEL key. When the LED is lit,
the HIGH level is selected and when unlit, the LOW level is selected.
5. Press the LOAD key (8) to toggle the load off or on. The LEVEL key can be pressed
at any time to switch between the settings. The current can be changed at any time
using the inc/dec arrows. The values set can be viewed by pressing the PRES key.
CR Mode
CR mode static (fixed DC level) can be set in two levels to allow for quick switching between
two resistance levels. High and low levels are referenced to the resulting current level, thus
the ×↑keys will decrease the resistance setting and the Ø↓ keys will increase the
resistance setting.
1. Press the MODE key, until the CR LED is lit (3).
2. Press the PRES key (7) to view the programmed values. The load has a high and low
setting to allow for quick changes in load setting.
3. The HIGH level must be set to a lower resistance than the LOW level; in setting the
values below, the load will not allow the HIGH level to be higher than the LOW level.
a. To set the high level, press the HIGH key (16) in the lower part of the settings
area. Use the inc/dec arrows to set the desired level.
b. To set the low level, press the LOW key (16) at the bottom of the settings area.
Use the inc/dec arrows to set the desired level.
4. To exit the preset mode, press the PRES key until the LED is green (power/watts
displayed) or not lit.
M540074-01 Rev C 3-11