4-14
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Section Topics
2308-900-01 Rev. A / July 2008
Section 4: Long Integration Measurements
Model 2308 Portable Device Battery/Charger Simulator User’s Manual
Table 4-3
FAST, SEARch, and DETect command reference
FAST SEARch DETect
Description
ON
ON
ON
ON
ON
ON
The unit is most responsive to bus commands in this mode. The supply does
not wait for TOUT or search time plus reading time for background readings
and TLEV command checks. Refer to
Figure 4-3
. front panel displays “FAST
LINT” instead of “LONG INT”.
With FAST set to ON, no background long integration measurements occur, no
pulse detection between user-triggered readings occur, no checking for the
parameter of LINT TLEV commands to detect a pulse occur, no setting of the
pulse trigger timeout bits in the status model between user-triggered readings
occur.
For triggered readings to set the PTT (Pulse Trigger Timeout) bits in the status
model, set TEDGe to be RISING or FALLING. If TEDGe is set to NEITHER, the
PTT will not be set after the initial setting of FAST to ON and TEDGe to
NEITHER. The setting of NEITHER specifies no pulse edge for
synchronization or detection. The bit is latched until read so the bit may still be
set in the status model from a previous timeout (see
Section 7
on the status
model for more information).
ON
OFF
OFF
ON
OFF
OFF
OFF
OFF
ON
The unit is more responsive to bus commands in this mode since the supply
does not need to wait for TOUT or search time plus reading time for
background readings. However, the supply does need to wait for TOUT or
search time when checking the parameter setting for TLEV commands. Refer
to
Figure 4-3
. front panel displays “NO SEARCH” instead of “LONG INT”.
Although no background long integration measurements or pulse detection
between user-triggered readings will occur, the checking for the parameter of
LINT TLEV commands to detect a pulse will occur. The setting of the pulse
trigger timeout bits in the status model will only occur between user-triggered
readings if TLEV commands sent. This is regardless of the TEDGe setting
since the RISING edge is used for this feature.
For triggered readings to set the PTT (Pulse Trigger Timeout) bits in the
status model, the TEDGe setting needs to be RISING or FALLING. If TEDGe is
set to NEITHER, the PTT will not be set after the initial setting of SEARch to
OFF and TEDGe to NEITHER. The setting of NEITHER specifies no pulse
edge for synchronization or detection. The bit is latched until read so the bit
may still be set in the status model from a previous timeout (see
Section 7
on
the Status model for more information).
OFF
OFF
OFF
Shaded cells designate command with precedence in each mode.
Summary of Contents for 2308
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