18
AT526 User's Guide
After correction, the value will be saved into internal flash disk.
It is necessary to do short-circuit clear zero correction.
When replace the test fixture or test cables, please do short –circle clear zero.
How to connect the test clips before executing short-circle clear.
Figure 5-2 Connect the test clip
5.3
Comparator
Mode
[R
‐
COMP],[V
‐
COMP]
SCPI Command:
COMP:RMOD {OFF,ABS,PER,SEQ}
SCPI Command:
COMP:VMOD {OFF,ABS,PER,SEQ}
There are several items for choosing:
SEQ – Sequential Mode
PER – Percentage Mode [PER = (Result – Nominal) / Nominal * 100%]
ABS – Absolute Mode [ABS = Result – Nominal]
Procedure to set comparator mode
:
Step 1
Press [Setup] key to enter <SETUP> page
Step 2
Use cursor key to select [RESMODE]
Step 3
SEQ
Sequential Mode:
Compare result with low and high limited
values.
PER %
Percentage Mode:
(Result – nominal) / nominal × 100%
ABS
Absolute Mode:
Result – Nominal
5.3.1
Comparator
Nominal
[R
‐
NOMINAL],[V
‐
NOMINAL]
SCPI Command:
COMParator:TOLerence:RNOMinal <
float
>
SCPI Command:
COMParator:TOLerence:VNOMinal <
float
>
When using the ABS and PER mode, the nominal value must be inputted.
The field is ignored when in SEQ mode.
The Nominal value must be positive.
Procedure to input nominal value
:
Step 1
Press [Setup] key to enter <SETUP> page
Step
2 Use cursor key to select [R-NOMINAL] or
[V-NOMINAL] field.
Step 3
Input the nominal value by numeric keypad.
5.3.2
Limit
[R
‐
LOWER]
[R
‐
UPPER]
[V
‐
LOWER],
[V
‐
UPPER]
SCPI Command: COMParator:TOLerence:RLMT
<lower>,<upper limit
>
SCPI Command: COMParator:TOLerence:VLMT
<lower>,<upper limit
>
