Cooper Instruments & Systems Model 7i Professional Force/Torque Indicator User Manual
Page 17
Model 7i Digital Force / Torque Indicator
User’s Guide
16
9.5 External Trigger (ET)
This mode of operation is useful for measuring electrical contact activation force as well as
synchronization of multiple instruments for a “snapshot” view of applied forces. It is possible to capture
the reading with a normally open contact (high to low transition of the trigger signal) or a normally closed
contact (low to high transition). Certain Mark-10 motorized test stands may be automatically stopped
when an external trigger has occurred.
Before the parameters of External Trigger Mode can be configured, it must be enabled. To do so, access
the main menu, select External Trigger, scroll to one of the four available options and press ENTER.
The options are as follows:
Select “+ More” for additional options:
Option Description
Momentary High
Low
The display will freeze the captured reading until ZERO is pressed. Applies
to a high to low transition of the trigger signal.
Momentary Low
High
The display will freeze the captured reading until ZERO is pressed. Applies
to a low to high transition of the trigger signal.
Maintained High
The display will show the captured reading only for as long as a high signal
is maintained.
Maintained Low
The display will show the captured reading only for as long as a low signal
is maintained.
Auto Settings
Functions exactly as described in Section 5.4. These parameter values are
shared between Averaging and External Trigger modes.
Output Pin
Automatically toggle the SP1, SP2, or SP3 pins (active low). If not required,
select “NONE”. To stop a Mark-10 ESM301 test stand when an external
trigger occurs, specify SP2 if moving in the tension/counter-clockwise
direction, or SP1 for the compression/clockwise direction.
Note: Because the same pins are also used for set points, the stand will
stop at whichever condition occurs first.
After the parameters have been configured and the menu has been exited, press MODE until ET is
displayed. External Trigger mode is now armed. Refer to the pin diagram in the Communications and
Outputs section for connection information.
To exit External Trigger mode, press MODE and select the desired measuring mode.
EXTERNAL TRIGGER 2
+ Auto Settings
Output Pin: NONE
EXTERNAL TRIGGER
*
Disabled
Momentary Hi->Lo
Momentary Lo->Hi
Maintained High
Maintained Low
+ More