AMETEK SLH Series RevB - Manual (Page 35)

SLH-Series AC High Power Electronic Load Operation
M540073-01 Rev C 3-9
3.3 NORMAL OPERATION
3.3.1 CC Mode:
Two levels can be set to allow for quick switching between two current levels. One
crest factor setting (see Crest Factor Selection next) applies to both levels. Although
the levels are referenced “high” and “low,” the setting level does not require one to
be higher than the other.
1. Press the MODE button (3), until the CC LED (3) is lit.
2. Press the PRES button (7) to view the programmed values. The load has a
high and low setting to allow for quick changes in load setting.
a. To set the low level, press the LEVEL button (10) until the associated
LED is not lit (or do not press the button if the load is already in low
state). Use the
↑↓ buttons (13) to adjust to the desired level.
b. To set the high level, press the LEVEL button until the associated LED
is lit (or do not press the button if the load is already in high state). Use
the
↑↓ buttons to set the desired level.
3. To exit the preset mode, press the PRES button until the associated LED turns
3.3.2 Crest Factor Selection:
The SLM Series AC/DC electronic load module provides 11 built-in sets totaling 55
waveforms. The waveforms are stored in memory banks (0-10) with 5 selections per
bank as shown in Table 3-1. Please refer to Appendix for details of waveforms.
When Frequency is set to DC (see Frequency section above), the waveform
information shall be fixed at DC level and the “bAn” bank selection will not appear in
the FREQ button menu.
1. Press FREQ button (15). The associated LED will light. Verify that the
frequency does not read “dc”. If it does, use the ↑↓ buttons to adjust the
frequency from “dc”.
2. Press the “FREQ” button until “bAn” appears on the upper display.
3. Use the  ↑↓ buttons to select the desired bank, as defined in Table 3-1.
4. Press the “FREQ” button two times to exit setting mode.
5. Press the appropriate √2, 2.0, 2.5, 3.0 and 3.5 key to select the desired crest
factor. The associated LED will light.
6. Press the LEVEL key to select the desired level CC mode. When the LED is
lit, the HIGH level is selected and when unlit, the LOW level is selected.
7. Press the LOAD button (8) to toggle the load off or on.
• Press the LEVEL button at any time to switch between the settings.
• Use the
 ↑↓ keys any time to change the current.
• Press the PRES key to view the set values.