Scientific SM6026, Руководство пользователя

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User Manual SM6026 21
 ↓(-)
This soft key is used to decrease the level of test signal source.
2) Soft or numeric keys are used to select or set the test level. When numeric keys are used to input the
desired level, the available units (mV, V, μA, mA and A) will be displayed in the soft key zone. Users can
use these unit keys to input unit and data. When [ENTER] is used to terminate the input of level, the
default level is V or A.
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NOTE : When you need to switch the level between current and voltage, numeric keys and unit soft keys
must be used.
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3.1.5 DC BIAS
SM6026 provides internal DC bias voltage from -10V to +10V. When the test function is selected as
DCR, the bias zone will display “---”.
Operation steps for setting DC bias :
SM6026 provides two methods to set the DC bias. The first one is to use soft keys, while the second
one is to input data by numeric keys.
1) Move the cursor to DC BIAS, the following soft keys will be displayed.
 ↑(+)
This soft key is used to increase the output level of DC bias.
 ↓(-)
This soft keys is used to decrease the output level of DC bias.
2) Soft or numeric keys can be used to select or set the DC bias source. When numeric soft keys are
used to input the desired bias level, the available units ((mV, V, μA, mA and A) will be displayed in the soft
key zone. Users can use these soft keys to input unit or data. When [ENTER] is used to terminate the
input of bias value, the default unit is V or A.
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NOTE: When you need to switch the DC bias level between current and voltage, numeric keys and unit
soft keys must be used.
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Press the [DC BIAS] key on the front panel to allow the output of DC bias. When DC bias is permitted to
output, the [DC BIAS] key will be lighted.
3.1.6 Test speed
The test speed of SM6026 is determined by the following factors:
 Integration time (A/D conversion)
 Average times (average test times per each test)
 Measurement delay (from startup to the start of measurement)

Display time of test results
You can select test mode as FAST, MED or SLOW. Generally, the test result is more stable and accurate
in SLOW test mode.