User`s guide

10
L4490A and L4491A RF Switch
Platform Product Options
There are five product options available
for the L4491A and one option available
for the L4490A. All options are factory
installed and must be specified at the time
of order. The product options include:
L4491A
• Option 001: multiport front panel. Front
panel modification for mounting up
to eight multiport switches. Includes
mounting hardware. Switch cables must
be ordered separately (Y1159A – Table
1).
• Option 002: Adds an additional
34945EXT module internal to the L4491A
chassis (Figure 3).
• Option 004: Adds 16-bit digital IO and 28
bits of relay drive lines.
• Option 005: switch mounting – bays
(default option)
• Option 006: switch mounting – bottom
tray
L4490A
• Option 004: Adds 16-bit digital IO and 28
bits of relay drive lines.
L4490A/L4491A Bracket
Layout Guidelines
Switches installed in the L4490A platform
or in the L4491A platform with Option 006
can be mounted in any orientation that
optimizes or simplifies switch or attenuator
wiring.
For the L4491A with default
Option 005, switches and attenuators
may be mounted in any of the “bays” and
in any combination. Figure 5 shows the
typical number of given brackets (Y1170A –
Y1175A) that can be installed in a bay.
Figure 5. L4491A Mounting Brackets per Bay
Figure 4. L4490A/L4491A Product Option Locations