Neutrik NPPA-TT-E90 PATCH PANEL - Manual (Page 7)

Page 7 of 14
NPPA-TT-E90 Instruction Manual
Symbolic structure of ground connection:
Configurations
Chassis Top
Note that all these
configurations are
only given when
all of the corresponding
solder-pads are
connected:
Connection between
PCB and Chassis is only existing
if the Ground cable is
connected
Chassis Bottom
Chassis Common
Central
(Top & Bottom connected
separated from Chassis)
............. Needed jumper position for intended Grounding
............. Insignificant jumper position
Corresponding flat tab
for Top Row ground contacts
EDAC - key
for orientation
EDAC 56 pin
Solder Pads to connect single ground contacts either to Common Top or Bottom ground-bus
S1 - S48
S49 - S96
Pin Header
Corresponding flat tab
for Bottom Row ground contacts
NOTE: In standard configuration there is no ground connection between top and bottom row
unless it is provided by an inserted patch cable. If this is required, as in the case of
phantom powered microphone lines, either make an internal connection by individually
wiring the corresponding upper and lower ‘S’ terminals, or if the latter is critical with
respect to possible ground loops make the connection via patch cable instead of using
the normalling feature
.