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Pulse Current Measurements 3-3
Trigger level
For the Models 2306, 2306-VS and 2306-PJ on the 5A current range, to avoid false pulse
detection, you can use a trigger level of up to 5A. All pulses, noise, or other transients that are
less than the set trigger level will be ignored. The charger channel has only one trigger level
range setting from 0 to 5A. The battery channel has three trigger level range settings: 5A, 1A,
or 100mA trigger level ranges. For 5A, the level may be set from 0 to 5A. For 1A, the trigger
level may be set from 0 to 1A. Likewise, the level may be set from 0 to 100mA for the 100mA
trigger level range. These ranges affect trigger level resolution and not the current range selec-
tion since pulse current readings are always performed on 5A current range. The trigger level
range option on the battery channel allows the user to set a trigger level with greater resolution.
On the Model 2306-PJ, you can also measure the pulse current on the 500mA current range.
Therefore, in addition to the three range settings for the 5A current range, the 2306-PJ has three
additional trigger level range settings for the 500mA curent range: 0-500mA, 0-100mA, and
0-10mA. These ranges also affect trigger level resolution for the 500mA current range.
Trigger level range
For the Models 2306, 2306-VS and 2306-PJ on the 5A current range, this setting affects the
pulse current trigger level and has no affect on the current range setting since the pulse current
measurement is always performed on the 5A current range. Three settings (battery channel only)
are available: 5A, 1A, or 100mA. Use the range that provides adequate trigger level resolution
(a 100mA range provides a greater available resolution for trigger level than does the 1A range).
The Model 2306-PJ operates in the same fashion with respect to the 500mA current range.
When using the Model 2306-PJ’s 500mA current range, the three trigger level range settings are:
500mA (0.5mA step), 100mA (0.1mA step), and 10mA (0.1mA step).
Trigger delay
The high, low, or average integration times can either be manually or automatically set. When
a pulse is detected, there is a 15µsec code execution delay (internal trigger delay — see
Figure 3-2 ) before the integration time begins. An additional user trigger delay can be set to
allow the leading edge pulse overshoot to settle. Regardless of the user trigger delay setting, the
internal trigger delay is always present.
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