Y1171A datasheet(3/19 Pages) KEYSIGHT

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03 | Keysight | L4490A/91A RF Switch Platform – Data Sheet

The design also provides easy access

for building, customizing and servic-

ing the unit. You can easily remove the

top, bottom, front and rear panels for

quick access. The front and rear panels

can be customized for your unique

needs. You can drill or punch holes for

mounting RF connectors, LEDs and

other signal routing components. See

Figure 3.

Cables and connectors can be

ordered through Keysight or third party

suppliers listed later in this document

under ordering information.

2U and 4U high versions of the switch

platform are available to give you flexibility

for your unique needs and expandability

for future projects. Both platforms come

standard with 64 coil drives integrated into

the enclose with options for expansion.

The 2U version uses a bottom mounting

tray with pre-drilled holes for mounting up

to 8 multiport switches or a combination of

devices using optional bracket kits. See

Figure 1.

The 4U version has a unique switch

mounting system with a robust design

ensuring that all components are securely

mounted, giving you confidence in a highly

accurate and repeatable RF connection.

The 4U switch mounting system comes

standard with a tray for vertically mount-

ing switches and attenuators using op-

tional bracket kits. All devices are securely

mounted with the RF connectors on top,

giving you a compact, flexible solution to

meet your custom needs.

The switch mounting tray has plenty

of space for mounting and controlling

up to 48 SPDT switches or 16 multiport

switches, or a combination of these and

other devices. Note that some complex

switch configurations require more than

the supplied 600 mA quiescent current.

See quiescent current calculations in the

specifications section for more informa-

tion. Another mounting tray at the rear of

the instrument provides space for mount-

ing additional components. There is also

an optional front panel with locations for

mounting up to 8 mulitport switches. See

Figure 2.

The 4U unit also has a location on the rear

panel to mount a user-provided fan for

when cooling is required.

Two Platforms with Ample Space to Mount Switches and Other Components

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