Keysight Technologies L4490A, Руководство пользователя

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Keysight L4490A/L4491A User’s Guide 25
About the Instrument
L4490A/L4491A Switch Trays and Options
The bracket-switch assemblies shown on the previous pages are mounted on the
switch trays within the L4490A and L4491A switch platforms. The Y1170A -
Y1175A bracket kits contain the required mounting hardware.
L4490A Switch Tray
Figure 1-7 shows the switch tray and bracket mounting location for the L4490A.
Figure 1-7. L4490A Bracket Mounting Locations.
The switch tray is a grid with spacings of 45.72 mm x 45.72 mm between any two
holes in the ‘x’ and ‘y’ directions. Bracket mounting requires the L4490A top and
bottom covers to be removed (Figure 1-1). Screw alignment is upward through
the bottom of the tray and into the bracket’s captive nut.
Figure 1-8 shows example placement of switches and attenuators within the
L4490A.
34945EXT
L4490A Controller Box
switch tray (bracket mounting area)
DC Output Power Supplies
L4490A platforms with Digital IO and Relay Drive Option 004 reduces the
tray area available for switch and attenuator installation.