AMETEK SLM Series Rev B - Manual (Page 20)

Features, Functions, Specifications SLM-Series AC/DC Load
1-4 M540072-01 Rev B
1.1.2 Operating Modes
The work mode of SLM-Series AC/DC Electronic Load includes Constant Current (CC)
and Constant Resistance (CR).
CC Mode
During CC mode, the load current input into SLM-Series, AC Electronic Load
depends on the current setting regardless of the input voltage, i.e., the current
setting remains unchanged.
I
V
CC
LOAD
CURRENT
CURRENT SETTING
INPUT VOLTAGE
Figure 1-5 Characteristics of CC Mode
CR Mode
During C.R. mode, the load current input into SLM-Series AC/DC Electronic Load
depends on the resistance setting. At this time, the load current is in direct
proportion to input voltage, e.g. the resistance setting remains unchanged. Please
refer to Figure 1-6 below.
I
V
LOAD
CURRENT
INPUT VOLTAGE
RESISTANCE
SETTING
Figure 1-6 Characteristics of CR Mode
The load setting of SLM-Series AC/DC Electronic Load and the load condition setting of the
front panel can be made through front panel manual operation or through GPIB commands.
The load voltage and current can be transmitted to the computer through GPIB bus. For
operation of GPIB, please refer to Section 4.