USER
MANUAL
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51331-006
Appendix 2: Connection Details
Photic Connectors
RJ45 Connector
Pin 1
Serial RS232 Output.
Pin 2
Exve TTL trigger input.
Note that with 12-15V power applied, the pulse width of this input signal determines the
flash pulse width. With 5V applied, the flash duration is fixed at 10ms or as determined
by the Photic internal flash memory parameter 1 – 10ms (which also sets the intensity
from 1 - 7). With 5V applied and under USB control, the Photic can be under full USB
control whilst also being able to be externally triggered (USB takes precedence).
The amplitude of the external trigger signal is >3V and >25us width.
Pin 3
+ve power input, 5V or 12-15V DC
Pin 4
0V connection
Pin 5
Serial RS232 Input.
Pin 6
For Issue 3 units and later, Exve TTL trigger output. This signal is a non-isolated
TTL trigger output which can be used to generate the Photic timing ‘tick’ marks in the
recording. The frequency and duration of the signal match that of the Photic stim.
Pin 7
USB DM signal
Pin 8
USB DP signal
Type 249 Touchproof Connector
This connector provides an isolated signal suitable for connection to type BF equipment. The signal is approximately 75mV
in amplitude with a pulse width the same as the currently set flash duration. It is normally connected to an Aux input on the
Trackit.
Pin 1
+ve output
Pin 2
-ve output
Interface Cable Connectors
D26HD Connector (26way High Density D)
Pin 16
Gnd
Pin 18
Exve TTL trigger input. Refer RJ45 pin 2 description above for details.
Pin 17
For the 1269 type cable Exve TTL trigger output. Refer RJ45 pin 6 description
above for details.
NOTE: A D26HD to BNC Adapter cable is available for trigger input and a D26HD to MiniDin for trigger
output.
Hirose HR212-10P-8P Connector
Pin 5
Gnd
Pin 6
Exve TTL trigger input.
With 15V applied from pin 1, the input pulse width determines the flash duration. The
intensity is fixed at 7 or determined by the Photic internal flash memory parameter.
Pin 1
+ve power input, 15V DC
Appendix 3