Справочник Пользователя для Key Digital ES381

 
It is also possible to use multiple USBcount50s as independent 
instruments.  In this mode, the counters are NOT connected together 
via the stacking interface

 
This configuration is also termed Multi-Instrument mode or MIS 
mode. 
 
In MIS mode, each counter can use its own timebase setting, and 
each counter input will remain electrically isolated from the others 
(unless you connect their BNC grounds together). 
 
 

All counters need a USB connection.  A standard hub may be 
useful for multi counter use to get enough USB ports. 
 
Each counter needs about 200mA.  Plugging more than 2 counters 
into a hub will mean that the hub may need to be powered 
externally.  Please refer to the hub’s documentation for more details 
about the power available per port. 
 

By default when you run USBcount50, it will automatically detect 
all the counters connected via USB and will also check to see if the 
counters are electrically connected together via the stack.  To run in 
Non-Stacked MIS mode, the software must be “told” to drive one 
particular counter.  You can then simply run multiple copies of the 
USBcount50 software, one copy for each particular counter. 
 
In order to achieve this mode of operation, USBcount50 accepts a 
command line parameter 
 

 

                                                 

4

 They can of course still be snapped together, but remember NOT to fit any of the stacking connectors 

so that the counters remain electrically independent of each other. 

Elan Digital Systems Ltd.

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USBcount50 USER’S GUIDE Iss1