6247G/6247C DC Voltage Current Source/Monitor Operation Manual
5.2.8 Source and Measurement Timing
5-45
(Example) Settling time (Ts) in the Slow mode with VS: 0 V
3 V and IL: 3.000 mA
Ts =
140
VS
SR
= 1
140
3 V
0.2 = 84
s
3. Current source
The settling time (Ts) of the 6247G/6247C is defined by the current source value (Is), the current
sense resistance (Rs), the load voltage (VRL = Is
RL), and the settling time setting (Fast/Slow), as
shown below.
Set the measurement delay (Td) to Ts or over.
When VRL is less than 10 V
• Fast/Slow Ts =
(10
VRL) / (Is
Rs) + 50 (IS: 30
A to 300 mA range)
• Slow
Ts =
( 10
VRL) / (Is
Rs) + 250 (IS: 3
A range)
When VS is 10 V or higher
• Fast
Ts =
( 2
VRL) / (Is
Rs) + 100 (IS: 30
A to 300 mA range)
• Slow
Ts =
( 10
VRL) / (Is
Rs) + 500 (IS: 30
A to 300 mA range)
• Fast/Slow Ts =
( 10
VRL) / (Is
Rs) + 100 (IS: 3
A range)
: Current limiter range coefficient
Current limiter range
Response
Fast
Slow
3
A
3
20
2
6
30
A
2
3
1.5
2
300
A
2
1.5
1.5
1.5
3 mA to 300 mA
1
1
1
1
SR: Slew rate
Current limiter
count value (digits)
Response
Fast
Slow
3000
0.2
0.5
0.2
0.1
2000
0.2
0.5
0.2
0.1
1000
0.4
0.4
0.4
0.1
500
0.5
0.3
0.5
0.08
1
2
1
2
1
2
1
2
1
2
