Agilent Technologies 34937A manual 34939A 64-Channel High-Density Form-A GP Switch Module

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34939A 64-Channel High-Density Form-A GP Switch Module

34939A 64-Channel High-Density Form-A GP Switch Module

The 34939A high- density GP switch module provides sixty- four 1 A Form A (SPST) relays for general purpose switching needs. You can set the power- failure state for these relays (see “Hardware Power- Fail Jumper” on page 2).

	N O T E	A temperature sensor on these modules triggers system interrupts
	N O T E	when high-carry current-induced heat on the modules reaches a

		threshold of 70 oC. See description of the “HOT” annunciator on
		page 2.

34939A Simplified Schematic

NO	Channel 001

COM	(1A Form A)

NO	Channel 064

COM	(1A Form A)

12	Agilent 34937A-34939A General Purpose Switch Modules User’s Guide

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Contents Agilent 34937A-34939A General Purpose Switch Modules Agilent Technologies, Inc 34980-90037Additional Safety Notices Frame or chassis terminalUnited States 800 Europe 31 20 547 Japan Declaration of Conformity DoC for the 34980A mainframe Contents Page General Purpose Switch Modules Hardware Power-Fail Jumper Temperature SensorSwitching Reactive Loads Operating ConsiderationsPower Down State Open34937A, 34938A and 34939A Scpi Programming Examples Opening and Closing ChannelsReading Jumper State and System Identity Reading Cycle Count and Resetting Modules to Power-On State Command resets a module in slot 4 to its power- on state34937A 32-Channel GP Switch Module 34937A Simplified Schematic34937A D-Sub Connectors Wire Size AWG Typical AWG Max 34937T Terminal Block34938A 20-Channel High-Current GP Switch Module 34938A Simplified Schematic34938A D-Sub Connectors 34938T Terminal Block 34939A 64-Channel High-Density Form-A GP Switch Module 34939A Simplified Schematic34939A D-Sub Connectors 33 no 40 no 47 no 54 no 61 no Male ConnectorPin D-Sub 34 no 41 no 48 no 55 no 62 no34939T Terminal Block 34939A 64-Channel High-Density Form-A GP Switch Module Temperature sensor JumperIndex