4
Full load of N3910-18S
There are 18 slots on N3910-18S. Besides N3910-18S, there are N3910-1S, N3910-2S,
N3910-3S, N3910-4S and N3910-15R optional. There are 1 slot on N3910-1S, 2 slots on
N3910-2S, 3 slots on N3910-3S, 4 slots on N3910-4S and 15 slots on N3910-15R
respectively.
WARNING:
A FULL LOAD OF N3910-15R AND N3910-18S SUBRACK REQUIRES FORCED AIR
COOLING IN THE RACK. TO AVOID OVER HEATING OF CARD UNITS,
WHENEVER POSSIBLE, INSTALL IN EVERY OTHER SUBRACK.
Forced air cooling with N3910-000
POWER SUPPLY
Power supply for card unit
The N3774 and N3574 card unit is powered by a plug-in power supply that is provided with
the appropriate desk chassis or EIA 19" subrack.
Power supply for stand-alone module
The N3774 and N3574 card unit can be converted into a stand-alone module when installing
into proper N3910 chassis that is powered by a plug-in 24VAC (N3921-24AC-1 for 110V;
N3921-24AC-2 for 230V) power supply. Plug the wires into the connectors, fasten the
screws to make a firm connection, see figure below.
