Model 10BDHM "B" Health Monitor Card

is a "B-sized" companion card to the Model 10AHM Health Monitor Card.  When connected to the 10AHM via a special cable, it can be used to monitor B-Deck voltage supplies, plus critical software handshake lines and other dynamic signals.

The following table describes the 13 diagnostic "subchannels" furnished by the 10BDHM.  Like the 10AHM-sourced subchannels, they can be scaled and filtered like any analog data channel, and can be continuously and automatically monitored for conformance to specific limit values.

Model 10AST  "A" Slot Test Card

is a special diagnostic and service tool.  Plugging into the Slot Connector of any mainframe "A Slot," its front section protrudes from the slot.  Through an array of labeled terminal posts, it thus allows voltmeter or oscilloscope observation of power and reference voltages, logic and calibration signals, data-bus lines, and all other signals pertinent to the slot in question.

Model 10AHM Health Monitor Card

Installed in any unoccupied System 10 "A Slot," this card lets the system read and display all pertinent power and reference voltages.  It has its own independent temperature-stabilized reference source to verify the accuracy of all measurements.

Model 10AEX-20 "A" Card Test Externder Board

lets you operate any System 10 "A Card" outside its designated "A Slot." It thus permits direct access to all of the card's "on-board" hardware, while at the same time maintaining any and all of the card's rear connections (to transducer, contact closures, other system cards, etc.).  The Extender Board may thus be used for purposes of signal tracing, waveform observation, adjustment of internal controls, card calibration or various other diagnostic or service functions.