Installation guide
Page 10 AXIS Q7900 Installation Guide
Unit connectors
Rear connectors
Network Connector - Axis video encoder blades are designed for 10/100/1000 Mbps networks and 
connect via the standard RJ-45 connector.
Network Connector Switch - The Network Connector Switch controls which blades are connected 
to a particular network connector. The following table shows how the blades are connected based 
on how the switches are set. These settings are only made during power up.
Rack ID - Sets a rack ID for all blades in the rack. Possible ID 0 to 15. The Blade ID, will correspond 
to the slot number. 
RS-485 Connector - Usually used for connecting Pan Tilt Zoom devices. See page 11 below for pin 
assignment information.
I/O Power Connector(s) - 12VDC 100mA out. This connector could be used to supply power to 
external units connected to the I/O port.
I/O Terminal Connector(s) - Provides the physical interface for up to 12 I/Os. See page 12 below 
for pin assignment information.
Front connectors
Network Activity LEDs 1-4 - 10/100 yellow flashes with activity, 1000M green, flashes with 
activity.
PS1 LED - This will indicate a RED light when there is an error in Power supply 1. Please shut down 
PS1 and replace with a new power supply. It also indicates if PS1 is disconnected
PS2 LED - This will indicate a RED light when there is an error in Power supply 2. Please shut down 
PS2 and replace with a new power supply. It also indicates if PS2 is disconnected
FAN LED - This will indicate if one or more FANS need to be replaced with new ones. Please replace 
the fans and reset the fans warning.
NET 1-2 
switch
NET 2-3 
switch
NET 3-4 
switch
NET1 
connector
NET2 
connector
NET3 
connector
NET4 
connector
Off Off Off Blade 1-4 Blade 5-7 Blade 8-10 Blade 11-14
On Off Off Blade 1-7 Do not connect Blade 8-10 Blade 11-14
Off On Off Blade 1-4 Blade 5-10 Do not connect Blade 11-14
On On Off Blade 1-10 Do not connect Do not connect Blade 11-14
Off Off On Blade 1-4 Blade 5-7 Blade 8-14 Do not connect
On Off On Blade 1-7 Do not connect Blade 8-14 Do not connect
Off On On Blade 1-4 Blade 5-14 Do not connect Do not connect
On On On Blade 1-14 Do not connect Do not connect Do not connect










