Nevion FRS-HD-CHO - Manual (Page 14)

FRS-HD-CHO Rev. 9
nevion.com | 14
4.2.1 Functions of 8pin modular jack
GPI name
( change-
over style /
frame-synch
style )
Function
( change-over style /
frame-synch style )
Pin
#
Mode Direction
Status General error status for
the module. Pin 1 Inverted Open
Collector
(open is alarm)
Output
LOS
2
Loss of signal or lock at
selected input Pin 2 Open Collector Output
Input 1/ Sync
loss Input 1 selected (IN1)/
Sync input loss of signal
or lock
Pin 3 Open Collector Output
Input 2/
Framedelay 2
Input 2 selected (IN2)/
Outputs a pulse with
length equal to frame
delay
Pin 4 Open Collector Output
Reset Reset selected input to
main Pin 5 TTL, 0V =
active level
Input
Set Set selected input to
standby Pin 6 TTL, 0V =
active level
Input
Input 2/
Frame delay 3
Connected to pin 4 on
backplane Pin 7 Open Collector output
Ground 0 volt pin Pin 8 0V.
2
EDH errors will not be shown at GPI output.
3
Pin 4 and 7 are connected on TP45 connector to be compatible with both FRS-HD-SDI and SDI-
CHO-2x1.