3-6
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2308-900-01 Rev. A / July 2008
Section 3: Pulse Current Measurements
Model 2308 Portable Device Battery/Charger Simulator User’s Manual
reading will reflect the average of 10 pulse current measurements. Each measurement needs to
start after detecting the respective edge for triggering.
Trigger delay and trigger level
Use the following items of the PULSE CURRENT menu item to set trigger delay and trigger level:
•
TRIGGER DELAY
- Use to specify additional user trigger delay (0 to 100 msec in 10 µsec
steps). See
Trigger delay
previously discussed in this section for details. This user trigger
delay is in addition to the internal trigger delay of 10
μ
sec.
•
TRIGGER LEVEL
- Use to specify the trigger level for the 5 A, 500 mA, 50 mA, or 5 mA
current ranges (battery channel (#1) only). Note that pulse current only works on the 5 A
current range for the charger channel. Pulses less than the specified level are not detected.
Battery channel (#1):
The following table shows the trigger levels for each current range
along with trigger hysteresis and trigger level step size:
Trigger hysteresis is built into the hardware. If a pulse does not exceed the appropriate
hysteresis level, trigger detection will not occur. The trigger level ranges for the battery
channel (#1) are displayed as follows:
Charger channel (#2)
- Set the trigger level from 0 to 5 A in 5 mA steps. However, there is
approximately 10 mA of trigger hysteresis built into the hardware. Therefore, if a pulse does
not exceed this level, trigger detection will not occur.
NOTE
Set AVERAGE READINGS count in the range of 1 to 100.
Table 3-1
Current range and trigger level settings
Current range
Trigger level setting Trigger hysteresis
Setting step size
5 A
0-5 A
10 mA
5 mA
500 mA
0-500 mA
1 mA
0.5 mA or 500
μ
A
50 mA
0-50 mA
0.1 mA
0.05 mA or 50
μ
A
5 mA
0-5 mA
0.01 mA
0.005 mA or 5
μ
A
5 A range:
PCUR TRIG LEV #1
A(5.0) 0.000 A
500 mA range:
PCUR TRIG LEV #1
A(500) 0.0000 A
50 mA range:
PCUR TRIG LEV #1
mA (50) 0.00000A
5 mA range:
PCUR TRIG LEV #1
mA (5) 0.000000A
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