Burster RESISTOMAT 2408, Manual, Page: 61 / 90

Model 2408
RESISTOMAT
®
Page 61
Table 2-3: I/O Interface Connections
Signal Name Pin Number Function
Input*
START 16 Initiates Measurement Cycle
Outputs**
Bin 0 1 Fail, Measured Value below preset limit
Bin 1 19 Pass, Measured Value above preset limit
GND 11, 15, 33 System Ground
IGND 5, 10, 23, 28 Isolated Ground
EOT 29 End of Test, Bin signal outputs valid
TEST ACTIVE 30 Measurement in process
VCC 12, 32 +5V (Source Z: 100
Ω
pin12, 10
Ω
pin 32)
Isolated Connections***
START HI (isolated) 34 High Input from external source
START LO (isolated) 35 Low Input from external source
Interlock
INTERLOCK 31
Operator Safety feature primarily for use
with external fixtures (i.e. operation of the
2408 instrument can be disabled until the
cover of the fixture is closed).
To enable the interlock function, pin 31
must be connected to ground or controlled
electrically with a logic low. This can be
converted to an isolated active low input
by removing jumper JP4 on the I/O PCB.
The interlock connector supplied with the
unit makes this connection (pin 31 to 28)
when plugged into the rear panel I/O con-
nector (Figure 2-32).
18 1
36 19
Figure 2-32: Rear Panel I/O Connector
WARNING
Do not apply an external source in excess of 5 V with jumpers JP2, JP3 or JP4 in place,
otherwise the instrument may be damaged. These jumpers are discussed below and on
some instruments physically located under the stack on the I/O board.