C
HEETAH
864XR
V
IDEO
M
ATRIX
S
WITCHER
Publication 81-9059-0595-0, Rev. C
October 2010
Proprietary Information of
PESA
3-14
3.9
R
EAR
P
ANEL
S
YSTEM
C
ONNECTIONS
When the video I/O connections are completed, connecting the various system control and operational
signals is the next step. The following paragraphs identify and define the operational and control
connection points. Follow the information contained in each paragraph carefully when making control
and system I/O connections to the 864XR router.
PESA recommends that you make a layout plan and connection drawing to document system
connections to the router and follow this drawing when attaching cabling to the rear panel connectors
of the router. Retain this documentation in a safe place in the event that service to the router should
ever be needed. PESA also recommends that you label each cable to identify its source or destination.
3.9.1
RS-232
C
ONTROL
C
ONNECTORS
COM
1
AND
COM
2
Connectors COM 1 and COM 2 (see Figure 3-10) are DB-9 male connectors that provide RS-232
serial communication interface points. Pin-outs are shown in Table 3-3.
1
2
3 4
5
6
7
8
9
ALARM
SYSTEM CONTROL
ALARM
4
3
2
1
OUTPUT
MONITOR
AUX FRAME CTRL
SLOT B
3
SLOT A
REFERENCE
1
1
2
4
2
FRAME
ALARM
3
4
COM 4
COM 3 / PRC
COM 1
COM 2
1
2
3
4
5
6
7
8
9
COM 1
COM 2
RCP PANEL PORT
PRC LOOP
NETWORK
FRAME
CONTROL
SYSTEM
CONTROL
Figure 3-10 - RS-232 Control Connectors
Table 3-3 – COM 1 and COM 2 Pin Assignments
Pin Signal
In/Out
1
CD
Input
2
RX
Input
3
TX
Output
4
DTR
Output
5
Ground ---
6
DSR
Input
7
RTS
Output
8
CTS
Input
9
RI
No Connect
