13
Fig.2-2 CV Mode
2.3.2.1
Setting Ranges
The voltage setting ranges for different models of load are listed as follows:
Model
3720A 3721A 3722A 3723A 3724A
Voltage 0~80V
0~80V
0~200V
0~200V
0~500V
2.3.2.2
Immediate Voltage Level
The immediate voltage level refers to the voltage set value in CV mode, which can be set via
mode selection and parameter setting menu, or via remote command (VOLTage <NRf+>). The
immediate current level can also be modified directly with left/right keys (
) and the knob in
CV mode.
2.3.2.3 Triggered Voltage Level
The triggered voltage level refers to the preset voltage value, which can become immediate
voltage level automatically when a trigger is received. If the CV mode and the input are enabled, the
input will be updated immediately when a trigger occurs. If the CV mode is not active, this voltage
level will have no effect on the input until the CV mode is active.
The triggered voltage level only can be set via remote command (VOLTage:TRIGgered <NRf+>).
Once a voltage level is triggered, subsequent triggers will become invalid until another
(VOLTage:TRIGgered <NRf+>) command is received. The trigger operation will be described in later
chapter. The status register of the electronic load can keep track of pending triggers and other
operating conditions. which will be described in details in the “ARRAY 372x Series Electronic Load
SCPI Programming Guide”.
2.3.2.4
Transient Voltage Level
The load will switch between the transient high voltage level (LevelH) and transient low voltage
level (LevelL) when the transient operation is enabled. The transient voltage level can be set in
transient operation menu from the front panel, or via remote command (VOLTage:HIGH <NRf+>,
VOLTage:LOW<NRf+>).
2.3.3
Constant Resistance Mode (CR)
Constant resistance mode has three ranges: the low range (CRL), the medium range (CRM), and
the high range (CRH). In CR mode, the load is equivalent to a constant resistance and will sink a
current linearly proportional to the input voltage in accordance with the programmed resistance
to make
