Grass Valley 8937 v.1.0.0 - Manual (Page 11)

8937/8937D Instruction Manual 11
Installation
8937D Module
Three on-board jumpers must be set on the 8937D module to determine
module formatting before installing it in the frame. Refer to
Figure 4 for
jumper locations on the module circuit board.
• DA 1 BYPASS/AUTO – for DA 1, set jumper J6 for AUTO (pins 1-2) to
enable auto reclocking (for signal data rates of 143, 177, 270, and
360 Mb/s) or BYPASS (pins 2-3) to bypass reclocking (for signals with
data rates of 4 Mb/s to 360 Mb/s). This setting can be overridden by
remote controls.
• DA 2 BYPASS/AUTO – for DA 2, set jumper J5 for AUTO (pins 1-2) to
enable auto reclocking (for signal data rates of 143, 177, 270, and
360 Mb/s) or BYPASS (pins 2-3) to bypass reclocking (for signals with
data rates of 4 Mb/s to 360 Mb/s). This setting can be overridden by
remote controls.
• Local/Remote – set jumper J7 to LOCAL (pins 1-2) to lock out remote
control or LOCAL & REMOTE (pins 2-3) for access to remote control.
This setting cannot be overridden by remote controls.
Figure 4. 8937D On-Board Jumper Locations
Looping Capabilities
The reclocked output signal from one 8937 or 8937D module may be looped
to up to ten reclocked 8937 or 8937D modules in series for further distribu-
tion without degrading the signal.
The output signal from modules operating in Bypass mode (not reclocked
to one of the standard rates) will begin to degrade by the third module in
the series. This looping is not recommended.
GRASS VALLEY 8937D SDI RECLOCKING EQ SNMP DA 8937 FA
UL
T
COMM
CONF
PWR
SIG PRES
DA 1 DA 2
BYP
ASS
143Mb
177Mb
270Mb
360Mb
R EM OVR
SIG PRES
BYP
ASS
143Mb
177Mb
270Mb
360Mb
R EM OVR
8270_06
J6
DA 1
BYPASS (2-3)
AUTO (1-2)
J7
J5
DA 2
BYPASS (2-3)
AUTO (1-2)
LOCAL/REMOTE
REMOTE (2-3)
LOCAL (1-2)