Grass Valley MV-825-RTRUM Multiviewer with Integrated Router User Manual

MV-825-RTR Multiviewer with Integrated Router  

User Manual  

Note:  

MV-825-RTR GPI outputs:  

Open collector outputs. Require external pull-up resistors of value between  

10 kΩ and 100 kΩ. Each output can sink up to 100 mA.  

• “+5 VDC Out” pins are provided on the connector for this purpose.  

• Maximum voltage, +5 V.  

• See Example: Driving LEDs from the GPI Outputs, on page 31, for an  

example of how GPI outputs can be used to drive LEDs.  

MV-825-RTR GPI inputs:  

Inputs have weak internal pull-down resistors.  

• Can be driven by input voltages of up to +5 V.  

• A logic “low” input is represented by an input voltage below +0.8 V.  

Example: Driving LEDs from the GPI Outputs  

MV-825-RTR GPI outputs have open collector drivers. There is a +5 V DC pin on the GPIO  

connector to provide the power needed to drive LEDs or relays.  

The following schematic is an example of the circuit needed to drive an LED by each GPI  

output. MV-825-RTR GPIO connector pin names and numbers are shown on the left.  

External Circuit  

GPI Connector pins  

Pin 1  

+5 V DC Out  

GPI Out 1  

GPI Out 2  

GPI Out 3  

GPI Out 4  

150 Ω  

Pin 22  

Pin 23  

Pin 24  

Pin 25  

LED 1  

LED 2  

150 Ω  

150 Ω  

150 Ω  

LED 3  

LED 4  

Fig. 2-18: Connecting LEDs to GPI Outputs  

31  

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General	Details
Name	Grass Valley MV-825-RTRUM Multiviewer with Integrated Router User Manual
Make	grass valley
Language	English
Filetype	PDF (Download)
File size	MB

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