CXM SERIES MICROWAVE SWITCHING SYSTEMS0 pages

BULLETIN
CXM 6/2015

CXM SERIES MICROWAVE

COAXIAL SWITCHING SYSTEMS
The CXM Series Systems are computer controlled, passive bi-directional coaxial switching
systems designed to handle 50 ohm RF signals from DC to 18 GHz, and in some cases up to
40 GHz. Two basic topologies are offered: Nx1 multiplexers and NxM nonblocking matrices.
Ethernet, RS232 & IEEE488 controls are standard, while USB and front panel Manual Controls
are optionally available.

FEATURES:

CXM/128 Mainframe

• RF systems with bandpass from DC to 18 GHz, 50 ohms impedance, low crosstalk & high isolation.
• Some systems with extended bandpass as high as 40 GHz.
• Both Nx1 multiplexers and NxM matrices offered. SMA connectors standard, N, BNC, TNC also available.
• Computer control via IEEE488 & RS232 standard. Ethernet LAN, USB and front panel Manual Controls optional.
• Front Panel LEDs for visual indication of closed switches and remote Status feedback aid in debugging.
• Passive design doesn't add to signal noise or create intermodulation products typical of solid state devices.

CHASSIS:

The CXM systems are 19" rack mounted chassis, and are built as either Mainframes or Expansion Chassis. They are designed to
hold CXM Series Microwave Switches in configurations specified by the user. All chassis have front panel LEDs showing switch
point status. RF connectors are typically mounted on the rear panel.
CXM/16 Chassis - Furnishes 16 relay drives, allowing two 8x1 switch modules, four 4x1 modules or eight 2x1 modules.
CXM/32 Chassis - 32 relay drives allow four 8x1 modules, eight 4x1 modules, thirty-two 2x1s, or a combination.
CXM/64 Chassis - Up to 64 relay drives. Control up to eight 8x1 modules, sixteen 4x1s, sixty-four 2x1s or a combination.
CXM/128 Chassis - Up to 128 relay drives. Control up to sixteen 8x1 modules, thirty-two 4x1s or combinations.
CXM/256 Chassis - Up to 256 relay drives. Typically used to control up to 16 CXM/10x1 Switches.

MICROWAVE SWITCH MODULES:

Several Microwave Switch Module types are offered. Each type has design features tailored to meet specific needs.

CXM/Nx1-NO Series are Normally Open type and are available in sizes ranging from 3x1 to 10x1.
CXM/Nx1-FS Series are Failsafe type. Similar to the NO type, but these modules default to Port 0 closed when powered off.
CXM/Nx1-FT Series terminate unused ports to ground via 50 ohms. Prevents reflections off open ports. 2x1 to 10x1 sizes.
CXM Transfer Switches have four ports that switch to one of two configurations. Configuration A routes Ports 1-3 and 2-4.
Configuration B routes Ports 1-2 and 3-4.
Microwave Switches are available with connectors other than SMAs, higher power ratings and frequencies to 40
Gz. Please contact the Factory for more information. We are open to using any brand of relay you prefer.

CONTROL MODULES:

All systems available with Ethernet LAN, IEEE488 (GPIB)& RS232 (standard), USB or TTL Control (optional).
CXM-1