HP E42 manual 5328A Input Circuit Program Code Set, Examples, Function

Model 5328A

Theory of Operation

4-112.When the interface receives a data byte, for control of trigger levels, it goes into the DAC control mode. This is a result of the interface receiving a + or - on its input data lines. Once in the DAC control mode, the programming interface latches disregard the information at their input. Simultaneously, the information, on the input data lines (MDA-MDD) is accepted by the A11 DAC board.

4–113.The A11 DAC board shifts the polarity indicator and three following numerical bytes of information into its shift registers. Following the polarity indicator and the three numerical data bytes, an asterisk (*) appears on the MDA-MDD lines (see Table 4-7 for proper format). The asterisk causes the programming interface to revert back to the non-DAC control mode. In this mode, the All board stops accepting data, and the programming interface latches again accept the input data.

Table 4-1.5328A Input Circuit Program Code Set

Programming is accomplished as detailed in Section Ill with the additions below. Codes shown underlined are start up conditions. These conditions are set by the code “P”, Remote Programm Initialize, or by the bus commands Device Clear, or Selected Device Clear.

Commands to A channel are preceded by A

Commands to B channel are preceded by B

Trigger levels are programmed using the following format

±X.Y Z*

Where X is volts

Y is 100 s of mV Z is 10 x of mV

* is used to terminate inputs to the DAC’s

Control	Function	Code
Coupling	AC	2
	DC	3
Slope	+	4
		5
Atten	X1oo	1
	X1o	6
	x1	7
Separate/Corn	Separate	A8
	Common A	A9

NOTE

Underlined codes are default conditions.

Invert	Normal	B8
	A&B Inverted	B9

The check function overrides all other programming commands for A&B channels.

EXAMPLES:

The instruction:

CMD “?U9”, “PF:G5S137A3579-1.25*B37+1.65*R”

Input circuits related programming information

Will program a 5328A with listen address of 9 to:

Function	Channel A	Channel B
Time Interval Avg A to B	DC Coupled	DC Coupled
Multiplier 103	-Slope	X1 Atten
Multiple measurement	X1 Atten	Trig Level +1.65V
Continuous Cycle	Common A	+Slope
Manual sample rate control	Trigger Level -1.25V

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