TH2689/89A Operation manual
60
7.2 The jumper set on HANDLER board
The jumper on HANDLER board is used to select internal or external power in outputting
signal and controlling signal.
warning
:
Be sure the power jack has been removed
and operate after internal capacitor is discharged
)
Note
:
In figure 7-2 and 7-1
,
“N”means the default jumper setting.
Figure 7-2
Jumper
No. Position
Description
Left
Use internal ground
J901
Right
(N)
Use external ground
Left
Use internal DC voltage source VCC(+5V)
,
set
J901 to left
J902
Right
(N)
Use external DC voltage EXV1(5V-24V)
,
set
J901to right
Figure 7-1
!