TTL Inputs Pin-Out
Each TTL input on the DB25 is directly connected to the pin of the TTL connector on the
device triggering the GPI. The ground must be common between the DB25 connector of
the XT3 and the external device.
Specifications
• each pin can be individually configured as an output or an input
• internal 4K7 pull up to +5V
• low level Vi<1.5 Volt (U12=74HC245)
• high level Vi>3.5 Volt (U12=74HC245)
• optional TTL compatible level (U12=74HCT245)
5.7.3. GP Out Connections
Relay Isolated Outputs (GP Out 1, 2, 3, 4)
Pin-Out
The user can define the functions, types and settings associated to the GPI outs in the
following applications:
• Setup menu of the Remote Panel (pages 8.3 & 8.4)
• IP Director settings (GPI and Auxiliary Track tab)
XS Server-Version 11.00-Hardware Technical Reference Manual
5. Hardware Installation and Cabling 61