Sourcetronic ST2826, Operation Manual

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ST2826 Operation manual Ver1.0
◇
25
delay time is within the range
：
0 s to 60 s
，
with the stepper of 1 ms. When the instrument is
applied in auto test system
，
the trigger delay function is available. When the instrument is
triggered by HANDLER interface
，
the trigger delay time can assure the reliable contact of
DUT and test terminal.
Operational step of setting delay function
Set delay time according to the operation below.
1) Move cursor to Delay zone.
2) Use numeric key to input delay time. After pressing a numeric key
，
the following unit
softkeys are displayed. Use these keys to replace [ENTER] to input delay time.
 msec

sec
3.4.13 Signal source internal resistance
ST2826 provides 4 kinds of signal source internal mode
： 30 Ω 、 100 Ω 、 10 Ω/CC （
Constant
Current
）
and 50 Ω. When the inductance is tested
，
in order to compare the data of other tester,
the signal source internal mode should be same.
30 Ω compares with
：
107X/GR1689
100 Ω compares with
：
HP4284A/E4980/chroma3250
10 Ω/CC compares with ：
106X/WK3245
50 Ω compares with
：
HK3532
Operational step of setting output resistance
Set the output resistance according to the operation below.
1) Move cursor to Internal resistance zone. The following softkeys are displayed.

100 Ω

30 Ω
 50Ω

10Ω/CC
2) Press
100 Ω
to select 100 Ω output resistance. Press
30 Ω
to select 30 Ω output
resistance.etc.
3.4.14 Deviation test function
Deviation test function can make the deviation value display on the screen instead of actual
test value. The deviation value is equal to the actual value subtracts the pre set reference value.
This function can help observe the changed condition of parameter by temperature, frequency
and bias.etc. The deviation function can be used for primary or secondary parameter, or
primary and secondary parameter. The instrument provides two modes below
：

ΔABS mode （
Absolute deviation mode
）
The current displayed deviation is the difference of test value and set reference value.
The formula of calculating ΔABS is as below
：