A13 Primary Keypad - Agilent Technologies 35670A Service Manual

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Agilent 35670A

A13 Primary Keypad

The following table lists signals routed between the A11 Keyboard Controller

assembly and the A13 Primary Keypad assembly. This table shows several things —

if the assembly generates or uses the signal. A description of each signal follows the

S This assembly is the source of the signal.

• This assembly uses the signal.

These lines indicate the RPG's direction and offset.

Column 0 - Column 7 — A high-to-low transition on one column line indicates that a key in

that column was pressed. After the A11 Keyboard Controller assembly's microprocessor

determines the keypad row location and the key number, the microprocessor sets columns 0 to

5 low which forces SINTFPn low. A high-to-low transition on SINTFPn informs the A7 CPU

assembly that a key was pressed.

A11 Location

Voltages and Signals

A13 Primary Keypad

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