53A-322

53A-322 DIGITAL/RF SWITCH CARD

ORDERING INFORMATION
53A-322
– Digital/RF Switch Card
OPT 10 – SMB Screw-on Connector for Snap-on
OPT 15 – Delete 50 Ohm Terminators
OPT 25 – Configured as Two 1 x 10 Trees
OPT 49 – Isolated Shields
OPT 1V – Add VXIbus Compatibility
53A-729 – Adapter Cable
OPT XX – User-specified length (in feet)
53A-730 – Adapter cable
OPT XX – User-specified length (in feet)
OPT 15 – Delete 50 Ohm Terminators

• Frequency Range – DC to 250 MHz
• Provides four groups of five coaxial switches arranged in a star configuration
• Any switch may be randomly opened or closed individually, in groups of five, or the entire card may be bank switched
• SMB snap-on connectors on the front edge of the card

The 53A-322 Digital/RF Switch Card provides four groups of five coaxial switches arranged in a star configuration, and is designed to be plugged into any system card slot. All switches may be randomly opened or closed by transmitting ASCII character commands from the system controller. The switches may be controlled individually, in groups of five, or the entire Card may be bank switched. A delay command allows the user to cause the switches to make-before-break, break-before-make, or perform other timing related functions.

Access to the switches is provided by SMB snap-on connectors on the front edge of the Card. SMB threaded connectors are available as an option. The front edge of the Card also has holes for cable ties which may be used to secure the coaxial cables and provide strain relief. In addition, the 50 Ohm terminators may optionally be removed.

BITE
A column of twenty LEDs provide Built-In-Test Equipment (“BITE”) for the 53A-322 Switching Card. An individual LED will be lit when its corresponding channel is closed.

Specifications
Configuration:
Four 1 x 5 coaxial switches.

Characteristic Impedance:
50 Ohms.

Frequency Range:
DC to 250 MHz.

VSWR:
1.30, DC to 100 MHz.
1.50, 100 MHZ to 250 MHz.

53A-322-a

3 dB Bandwidth:
320 MHz.

Risetime:
7.2 nsec.

Switching Speed:
Greater than 200 closings or openings per second (including settling time).

Power:
10 Watts.

Signal Connectors:
SMB Jacks (mate with Sealectro 51-024-0000 snap or equivalent for RG-188 cable).

Operation Life:
> 10^7 operation min.

Relay Contacts:
Initial Contact Resistance, less than 0.1 Ohms.
Contact Resistance at End of Full Load Life, less than 0.3 Ohms.

Contact Rating:
0.5 Amperes, 28V dc resistive.

Maximum Switching Voltage:
250V dc or peak ac at 50 mA. resistive.

Programmed By:
ASCII Characters.

Recommended Cables:
53A-729.
53A-730.

Available Options:
OPT 10, SMB screw-on connector for snap-on .
OPT 15, delete 50 Ohm terminators.
OPT 2S, configured as two 1 x 10 trees.
OPT 49, isolated shields.
OPT 1V, add VXIbus compatibility