Description
15
Table 2. Functions of socket pins.
Pin number
Name
Function
3
+SYNC
Trigger signal input
4
0V
Common
For the synchronization, apply positive TTL pulse on the + SYNC output in relation to
0 V (Fig. 7). The synchronization will occur by the
pulse front with ±25 µs accuracy.
Fig. 7. Signal shape at +SYNC output in relation to 0 V.
To synchronize the auditory-visual stimulator with other devices, use the trigger output
socket located on the side panel of the unit. The numbering of the socket pins is the
same as on the amplifier.
When the trigger output is used with each stimulus generated by stimulators, negative
polarity pulse appears at the connector which fall corresponds to the beginning of the
stimulus.
The pulse duration at the trigger output
is 2…5 µs.
1.5. Synchronization with
Neuro-MEP.NET
Software
The external stimulators connected to the trigger input must be used as follows:
1.
Connect the external stimulator to the trigger input using a cable.
2.
Switch on the external stimulator power supply.
3.
Run the
Neuro-MEP.NET
software, execute the
Setup|Tests templates|Setup
menu command, select the required test template, press the
Change
button and
select the
Third-party firm stimulator
check box on the
Hardware|Stimulator
page
(Fig. 8). This step should be executed once for each template where the external
stimulator is planned to be used. If you do not want to change the template, cre-
ate the test and select the similar settings in it.
