Agilent Technologies 35670-90066 manual A11 Keyboard Controller, Signal Name

Voltages and Signals	Agilent 35670A
A11 Keyboard Controller

A11 Keyboard Controller

The following table lists signals routed between the A11 Keyboard Controller assembly and the A7 CPU assembly. This table shows several things — if the assembly generates or uses the signal or voltage, and if a signal is bidirectional. A description of each signal follows the table.

Signal Name	Pin(s)	A7 P1	A11
BBEEPER	3	S	•
HRNGA	11	—	•
HRNGB	9	—	•
HRNGC	2	—	•
HRNGD	1	—	•
RESET	5	S	•
SCL	15	S	•
SDA	13	⇔	⇔
SINTFPn	7	•	S
+5 V	10	•	•
Gnd	6, 8, 12, 14, 16	•	•
Not Used	4	—	—

SThis assembly is the source of the signal.

• This assembly uses the signal.

⇔ This signal is bidirectional.

— This assembly does not use this signal.

BBEEPER	Buffered Beeper — This line controls the frequency of the front panel beeper tone.
HRNGA	Half Range A — In both the two channel and four channel analyzer, a high on this line turns on
	the channel 1 half range LED. This line goes high when the A1 or A2 Input assembly detects
	that the amplitude of the channel 1 input signal reached half the set range.
HRNGB	Half Range B — In a two channel analyzer, a high on this line turns on the channel 2 half range
	LED. In a four channel analyzer, a high on this line turns on the channel 3 half range LED.
	This line goes high when the A1 Input assembly detects that the amplitude of the channel 2
	input signal reached half the set range or when the A2 Input assembly detects that the
	amplitude of the channel 3 input signal reached half the set range.
HRNGC	Half Range C — In a four channel analyzer, a high on this line turns on the channel 2 half
	range LED. This line goes high when the A2 Input assembly detects that the amplitude of the
	channel 2 input signal reached half the set range. This line is only used in four channel
	analyzers.
HRNGD	Half Range D — In a four channel analyzer, a high on this line turns on the channel 4 half
	range LED. This line goes high when the A2 Input assembly detects that the amplitude of the
	channel 4 input signal reached half the set range. This line is only used in four channel
	analyzers.
RESET	System Reset — A high on this line resets the digital logic on the A11 Keyboard Controller
	assembly. This line pulses high during power-up and power-down, and when the A7 CPU
	assembly’s microprocessor executes the RESET instruction or is externally reset.

9-18