Keysight / Agilent / HP 44481A Terminal Block

The Keysight 44481A Terminal Block is a screw-terminal interconnect accessory secure wiring and signal routing in test and measurement systems. It is the interface point for the Keysight 44471A 10-Channel General Purpose Relay Module, enabling organized electrical connections for data acquisition and instrument control in laboratory and industrial environments. ## Technical Specifications • **Switching Capacity:** Up to 2 A, 250 V maximum
• **Maximum Power:** 60 W or 125 VA
• **Closed Channel Resistance:** 10¹¹ Ω
• **DC Isolation (HI-LO):** >10¹⁰ Ω
• **DC Isolation (Channel-Chassis):** >10¹⁰ Ω
• **Capacitance (Open Channel, Channel-Channel):** <5 pF
• **Capacitance (HI-LO):** <27 pF
• **Capacitance (Channel-Chassis):** <80 pF
• **Insertion Loss at 100 kHz:** <0.20 dB
• **Insertion Loss at 1 MHz:** <0.25 dB
• **Insertion Loss at 10 MHz:** <0.50 dB
• **Crosstalk at 100 kHz:** <-73 dB
• **Crosstalk at 1 MHz:** <-53 dB
• **Crosstalk at 10 MHz:** <-33 dB ## Key Features • Screw-terminal interface for straightforward wiring and maintenance
• Low channel resistance supports mV-level signal switching with minimal attenuation
• High isolation characteristics across all channel-to-channel and channel-to-chassis paths
• Low capacitance design minimizes signal integrity issues in precision measurement applications
• Frequency-dependent insertion loss and crosstalk performance suitable for RF and broadband switching ## Typical Applications • Signal routing and multiplexing in automated test equipment
• Data acquisition system configuration and reconfiguration
• General-purpose relay control in laboratory test setups
• Industrial instrumentation requiring organized terminal connections ## Compatibility & Integration The 44481A Terminal Block is engineered specifically for use with the Keysight 44471A 10-Channel General Purpose Relay Module, providing the physical wiring interface for all 10 relay channels. This pairing enables complete signal switching and routing solutions for diverse test and measurement applications.