C
HEETAH
864XR
V
IDEO
M
ATRIX
S
WITCHER
Publication 81-9059-0595-0, Rev. C
October 2010
Proprietary Information of
PESA
3-18
Figure 3-13 - System Alarm Cable Set and Associated Schematic
3.9.4
PRC
L
OOP
C
ONNECTOR
The five-contact PESA Router Control (PRC) Loop Connector, located on the rear of the unit (Figure
3-14), is a loop-through connector that provides an RS-422 serial communication interface. This
interface provides a system control link between the 864XR frame and other PESA routing switchers
within the facility using the PRC Protocol as defined by PESA Document No. 81-9062-0316-0. It is
wired in parallel with the DB-9-Male PRC Loop connector. Either connector may be used for frame-
to-frame interface communications. Contact locations are illustrated in Figure 3-15. PRC Loop may
be connected to PESA PRC compliant routers with a cable assembly (PESA part number 81-9028-
0395-0) constructed as shown in Figure 3-15.
5
4
3
2
1
ALARM
SYSTEM CONTROL
ALARM
RCP PANEL PORT
4
3
2
1
OUTPUT
MONITOR
AUX FRAME CTRL
SLOT B
3
SLOT A
REFERENCE
1
1
2
4
2
FRAME
ALARM
3
4
PRC LOOP
COM 1
COM 2
COM 4
COM 3 / PRC
NETWORK
FRAME
CONTROL
SYSTEM
CONTROL
Figure 3-14 - PRC Loop Connector