Issue 2.3
17
PYXIS
System User Guide
3.2 1U
3.2.1 Ventilation
Figure 11: 1U Air Flow
The 1U Pyxis frame ventilation system uses three small fans mounted in the front door. The fans
draw air in from the front circulate it throughout the router, finally passing out through the side vents.
It is therefore important not to block the side air vents. The ventilation flow relies on the front door
being closed. Do not operate the router for extended times with the door open.
3.2.2 Internal Layout
Figure 12: 1U Frame Layout
The 1U frame has a single slot allowing one routing module to be fitted.
Power is supplied from two external PSUs, which are diode-or’d on the motherboard to
provide dual redundancy
Cooling is provided by fans mounted in the front door
Signal cards and rear panels are common to both the 3U and 1U frames.