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4-16
Long Integration Measurements
NOTE
• If a pulse is not present, timeout needs to elapse (TOUT).
• If DETECT ON (only), search time needs to elapse before responding to a bus
command (reading time not incurred).
• If SEARCH OFF or FAST ON, search time and reading time not incurred.
• Search time needs to elapse when checking TLEV command for valid setting
.
B
A
Long Integration
Time
Search Time
TOUT
Reading
Time
Figure 4-3
TOUT and search time
Table 4-3
FAST, SEARch, and DETect command reference
FAST SEARch
DETect
Description
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 com-
mand checks. Refer to
. 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
ON
OFF
ON
OFF
ON
ON
OFF
OFF
Shaded cells designate command with precedence in each mode.
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