Y1175A Datasheet, PDF (6/19 Pages) Keysight Technologies – RF Switch Platform

06 | Keysight | L4490A/91A RF Switch Platform – Data Sheet
For even more time savings 2D and 3D
models of the switch mounting system,
switches and brackets are provided in .dxf,
.stp and .igs formats. This enables you to
quickly layout cable routing and document
your solution in your own modeling tools.
See Figure 4.
Easy Servicability
With the switch mounting system,
switches are easily replaced through the
bottom of the box without disturbing the
RF cabling. See Figure 5.
Switch drive and readback
capabilities
The Keysight L4490A/91A integrates the
power and control signals for all of the
most popular RF and uW switches and
attenuators. It comes standard with 64
switch coil drive lines – that’s enough to
control 32 standard SPDT switches or 8
multiport switches. With Option 002, it’s
expandable to control another 64 coils. In
addition, access to the 5 V, 12 V and 24 V
supplies is also available to control other
devices in your RF switch matrix. If you
need more control and monitoring lines,
Option 004 adds 16 digital IO lines and 28
additional relay drive lines.
The L4490A/91A uses distribution boards
for simple connections to the switches us-
ing standard ribbon cables.
The distribution boards also have digital
inputs so you can read back the actual
position of the switch, giving you more
confidence in switch closures. Use digital
outputs to drive LEDs to show the actual
switch position.
Figure 4: 3D models
Supported components
The following Keysight microwave switch-
es and attenuators are directly supported
with the Y1150A-Y1155A distribution
boards:
–– N181x/U9397x Series SPDT switches
–– 8762/3/4 Series SPDT switches
–– 8765x coaxial switches
–– 8766x/8767x/8768x multiport
switches
–– 87104x/106x/L710xx/L720xx multi-
port switches
–– 87406x Series matrix switches
–– 87204x/206x Series multiport
switches
–– 87606x Series matrix switches
–– 87222x/L7222 transfer
switches
–– 849x/8490x Series attenuators
–– Other switches and devices-
through individual screw terminal
connections
The Y1156A diagnostics board tests
the L4490A/91A to ensure all the con-
trol signals are being delivered to the
switches. This test is easily done using
the switch sequences supplied through
the web interface.
Figure 5: Easy to service the unit without
disturbing the RF cabling