Keysight Technologies Keysight Technologies

Keysight Extender Board For 34945A And L4445A

  • Techni-Tool Part #: 431TE4944
  • Mfg Part #: 34945EXT
  • Sold per: EACH
  • Estimated weight: .0001 lb
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  • The Keysight Technologies 34945A switch/attenuator driver module for the 34980A Multifunction Switch/Measure Unit allows you to control switches and attenuators external to the 34980A Mainframe. This module provides power and control signals for many of the most popular microwave switches and attenuators.

    Distribution boards offer ease of wiring to the external switches. One 34945A and 34945EXT can drive up to 64 switch coils, that's 32 SPDT switches. Add an additional 34945EXT's to drive another 64 switch coils.

    Features:
    • Control of most popular microwave switches and attenuators
    • Expandable with 34945EXT Remote Module
    • Distribution boards for ease of wiring
    • Switch readback capabilities
    • External power option for simultaneous switching


    Specifications

    34945EXT switch drive
    (64 channels, low side drive mode)

    Driver off voltage (max): 30 V
    Driver off leakage current: 500 µA
    Driver on current (max): 600 mA
    Driver on voltage (max): 0.5 V @ 600 mA

    34945EXT switch drive
    (64 channels, TTL drive mode)

    Hi output voltage: 3 V @ I out = 2 mA
    Lo output voltage: 0.4 V @ I in = 20 mA
    Lo input Current: 20 mA

    34945EXT position indicator sense inputs
    Channels: 64
    Lo input voltage (max): 0.8 V
    Hi input voltage (min): 2.5 V
    Input resistance: >100 kΩ@ V in =5 V
    >20 kΩ@ V in > 5 V
    Maximum input voltage: 30 V

    34945EXT switch drive power supply
    (34945EXT powered by 34945A)

    Voltage: 24 V nominal (external power supply required for switches needing more than 24 V)
    Current: 100 mA continuous + 200 mA (15 msec pulse, 25% duty cycle)

    34945EXT external power connection
    Voltage range: 4.75 V to 30 V
    Current limit: 2 A

    LED indicator (Current mode divers)
    Channels: 64
    Supply voltage: 5 V nominal
    LED drive current: 5 mA nominal (prog 1-20 mA)
    Driver compliance voltage: 0.8 V

    34945EXT dimensions
    11.2" x 4.5" x 1.5" high with distribution boards installed

    Maximum 8 34945 Ext's per mainframe. Non-Stocking Item. May Require Additional Time To Ship.

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