4-24
Table 4-2 Contact Assignments for Handler Interface
Pin No.
Signal
Name
Description
1
2
3
4,5,6
7,8,9
10
11
/P1
/P2
/P3
NC
NC
/NG
/AUX
Sorting judgments
All signals outputs with build-in pull-up resistor to
in5V or external power EXTV are open
collector and opto-isolated.
The default pull-up power supply is the external DC
power EXTV.
Build-in pull-up resistance is 4.7k
Ω
.
12,13 /TRIG
External Trigger:
U2810D is triggered on the rising edge of a pulse
applied to this pin.
14,15 NC No
Connection
16,17,18 +5V
In5V voltage supply.(max. 0.3A)
Generally, internal power supply is not recommended
to be used. If it must be used, make sure the current
is less than 0.3A.
19,20,21
22,23,24
25,26
NC No
Connection
27,28 EXTV
External DC voltage.
DC voltage supply pins for DC isolated open collector
outputs (/P1, /P2, /P3, /AUX, /NG) and DC isolated
input (/TRIG).
Setting of internal jumpers must be changed when
using an internal voltage supply.
29 NC
No
Connection
30 /IDX
/IDX signal is asserted when an analog measurement
is completed and the U2810D is ready for the next
DUT to be connected to the UNKNOWN terminals.
The measurement data however, is not valid until
/EOM is asserted. (See Figure 4-3).
31 /EOM
End Of Measurement:
The signal is asserted when the measurement data
and comparison results are valid. (See Figure 4-3).
32,33 NC No
Connection
34,35,36 COM
Common for EXTV
When the in5V is used for the Handler
interface, reference ground of the instrument should
be connected with COM.
