Constant Resistance Mode - Chroma 63200 Series Operation & Programming Manual

Slew Rate (Rise, Fall A/µS)
Slew rate determines the rate at which the current input of changes to a newly programmed
value. There are two slew rate values, which are rise rate and fall rate.
CC mode voltage specification setting
The Load can do GO/NG test by pressing the
check if the measured data is within the specification that set at the end of each mode setting.
We can select are two types of parameters, percent or value, under the configure setting.
This operation will be described in detail in section 4.2.4 Setting the Specification.
3.5.2

Constant Resistance Mode

In CR mode, the Load will sink a current linearly proportional to the input voltage in
accordance with the programmed resistance. There is a double pole RC filter of input
voltage, so high frequency parts will be removed. The load sink current of CR mode is
proportioned to the input voltage through a double pole RC filter. To prevent the load
current change caused by the input voltage variation, the power source impedance should be
as low as possible, and remote sensing cable must be used to sense load input voltage when
high sink current (low setting resistance) is programmed.
Resistance can be programmed in either of low range or high range by the
low range is used for input voltage in low voltage range while the high range is for the input
voltage over low voltage range. The current range of CR mode is high range.
There are two resistance levels (A or B) for CR function as static CC mode. Both A and B
states use the same range. You can select CRLA or CRLB using
determines the rate that the load level changes from one state to another.
V
Input
Voltage
Figure 3-6 Constant Resistance Mode
key under loading condition. It will
GO/NG
Slope
(R setting)
I
Load Current
Operation Overview
key. The
RANGE
key. Slew rate
A/B
3-7