System Operation
TP04100A Interface
&
Applications
Rev A: 0611
5/98
A\,
v
TEMPTRONIC
COF'PORATI0E.I
3-12.3.7 Air temperature
ma.
(OC) (Setup Parameter)
I
Allows the operator to set the maximum limit (or hottest) hot air temperature which the DUT will undergo
I
-
I
when the system is controlling in DUT mode.
I
Accepted values are any temperature between +25
"C
and +225
"C
in
1
"C
increments. When the system
is shipped this value is set to the system's upper air limit of +225
"C.
i
3-12.3.8 Air temperature min (OC) (Setup Parameter)
Allows the operator to set the minimum limit (or coldest) cold air temperature which the DUT will
I
undergo when system is controlling in
DUT
mode.
i
Accepted values are any temperature from
-99
"C
to +25
"C
in
1
"C
increments. When the system is
,
j
shipped this value is set to
-99
"C
to ensure that the maximum system cooling capability is not hindered.
I
I
However, setting below system range can cause overshoot in DUT control mode.
3-12.3.9 Maximum test time (seconds) (Setup Parameter)
Allows the operator to program a maximum test time, acting as a timer.
This timer begins automatically at the end of any programmed soak time when the "AT
TEMPERATURE" condition is reached and the "start test" signal is given by the system. This is primarily
useful when using the ramplcycle mode of system operation, but it has other valid uses, described below.
Because the system is capable of being coupled with automatic test equipment utilizing standard "start
test" (ST) and "end of test" (EOT) signals, this feature can work in two ways:
First, it allows simple operation utilizing only the "start test" signal from the system to the host tester. If
the "end of test" signal is not available from the host tester, or is not used, then when the test time has
elapsed, the system automatically moves to the next temperature setpoint in the cycle routine.
Second, if the "end of test" signal is being used, then this "maximum test time" feature can prevent the
system from "hanging up" (interrupting the cycling routine) in the instance of the "end of test" signal not
being properly received from the host tester.
For example, if the operator programs a cycling routine of
10
temperature setpoints, each with varying test
time lengths, with the longest setpoint time test being
5
seconds, then you might set "maximum test time"
to
6
seconds. In this way, if the "end of test" signal is not properly received by the system, the system will
still automatically cycle to the next setpoint after
6
seconds and not "hang up."
To disable or ignore "maximum test time," set it to
0
(zero).
Page
3-32
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