2308-900-01 Rev. A / July 2008
Return to
Section Topics
3-23
Model 2308 Portable Device Battery/Charger Simulator User’s Manual
Section 3: Pulse Current Measurements
Figure 3-8
Sample :STEP Pulse measurement
Pulse sequences - rising and falling
Consider the pulse form in
Figure 3-9
. This pulse form has three falling (DOWN) level steps
followed by three rising (UP) level steps. Since these steps rise and fall to the same steady state
current, active steps need to be designated as 6 UP and 0 DOWN to measure the step level
current. If DOWN steps are specified then, the step level current measured will be the steady state
current.
Figure 3-9
Pulse form with rise and fall steps
For the active steps, the trigger level may be set to a value appropriate for each rising or falling
step, or set to the same value for all active steps. If using the same values for all TLEV
x
steps
,
make sure the TLEV value set is appropriate for the smallest step (in
Figure 3-9
, the TLEV value
could not be greater than 275mA). See
Table 3-7
for sample trigger level values.
Table 3-7
Sample TLEV values for
Figure 3-9
TLEV
x
Unique TLEV
x
value
Same TLEV
x
value
TLEV1
550 mA
200 mA
TLEV2
325 mA
200 mA
TLEV3
200 mA
200 mA
TLEV4
300 mA
200 mA
TLEV5
500 mA
200 mA
125
425
625
825
975
725
525
325
155
0
100
300
400
500
600
700
900
0.1
0.2
0.3
0.4
0.5
TIME (seconds)
300
TLEV1
TLEV2
TLEV3
TLEV4
TLEV5
TLEV9
TLEV8
TLEV7
TLEV6
900
TLEV mA
(rising edge)
mA TLEV
(falling edge)
125
425
625
825
975
725
525
325
155
100
300
400
500
600
700
900
300
TLEV1
TLEV2
TLEV3
TLEV4
TLEV5
TLEV9
TLEV8
TLEV7
TLEV6
900
TLEV mA
(rising edge)
mA TLEV
(falling edge)
0
2.1
2.2
2.3
2.4
2.5
0.6
0.7
1.8
1.9
2.0
3 Down
3 Up
350mA
600mA
875mA
725mA
425mA
600msec
275mA
4msec
Steady state current
Summary of Contents for 2308
Page 2: ......
Page 12: ...This page left blank intentionally...
Page 32: ...This page left blank intentionally...
Page 106: ...This page left blank intentionally...
Page 140: ...This page left blank intentionally...
Page 208: ...This page left blank intentionally...
Page 220: ...This page left blank intentionally...