Video Output; Linear Time Code Connections; Connecting The General Purpose Inputs And Outputs; Figure 2-2: Typical Gpio Circuitry - evertz 8010TM Instruction Manual

2.4.2. Video Output

The SDI BYPASS and SDI OUT outputs contain the input video with VITC and character data keyed in
by the keyer. Connect one of these outputs to any input on your system that accepts 8 or 10 bit
SERIAL digital video. The two outputs are identical except that the SDI BYPASS output is protected by
the bypass relay. When the relay is active, the SDI BYPASS output is directly connected to the SDI
input, and the SDI OUT output will not have video output.
2.5.

LINEAR TIME CODE CONNECTIONS

The LTC reader input provides a means of bringing linear time code into the 8010TM. Pin 1 of the XLR
is ground, and pins 2 and 3 provide a balanced output. When using an unbalanced input to the reader,
the signal should be applied to pin 3 of the LTC reader input connector. Normally, the unused input
(pin 2) should be connected to ground (pin 1).
The LTC generator code output is available on an XLR connector at the rear panel. Output level is
adjustable from approximately 0.5 V to 4 V using the LTC LEVEL item on the Engineering setup menu
system. (See section 3.4.1) The generator code output should be connected to the record input of the
time code channel of your video recorder. Pin 1 of the XLR is ground, and pins 2 and 3 provide a
balanced output.
2.6.

CONNECTING THE GENERAL PURPOSE INPUTS AND OUTPUTS

The 9 pin PARALLEL I/O connector has 6 general purpose inputs and 2 tally outputs. The GPI inputs
are active low. This means that if you leave an input floating (not connected) then it will not be
activated. Lowering the GPI input to a voltage below 0.8 volts will activate the input. The user can
activate GPIs simply by connecting the GPI input pins to Ground using a button, switch, relay or an
open collector transistor.
The outputs are internally pulled up to 5 volts. Care must be taken to limit the load to 0.5W so there is
no affect on the power supply source in the frame.
Each I/O pin is electrically wired so it can be used as either an input or output. When the pins are used
as inputs, the software turns off the output driver transistor. Figure 2-2 shows the circuitry for each of
the I/O pins.
INSTALLATION
Model 8010TM SDI Time Code Master Manual
+ 5 Volts
365 ohm
Typical
I/O Pin

Figure 2-2: Typical GPIO Circuitry

Revision 1.5.1
22 ohm
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