evertz 7700 - Figure 2-3: Powering the General Purpose Input Opto-Isolators from the Unit; Figure 2-4: Powering the General Purpose Input Opto-Isolators from an External Power Supply

7700 Multiframe Manual
7725DSK-LG / 7725DSK-LG-HD HD/SD Logo Inserter & Media Keyer
Page 2-10 Revision 1.4 INSTALLATION
GP+3.3v
Vext
GND
Chassis
Ground
To Internal
Circuit
1.8 k Ω
GPI
+ 3.3 Volts
Power
OK
500
Ω
Figure 2-3: Powering the General Purpose Input Opto-Isolators from the Unit
GP+3.3v
Vext
GND
Chassis
Ground
To Internal
Circuit
1.8 k Ω
GPI
+ 3.3 Volts
5-25 VDC
n/c
Figure 2-4: Powering the General Purpose Input Opto-Isolators from an External Power Supply