Agilent Technologies 4294A Service Manual download pdf (Page 225)

13 225

Application Sample Programs

Measurement controlling oscillator level

1. Chapter Title

2. Chapter Title 13. Application Sample

4. Chapter Title

5. Chapter Title

Programs

Lines 460 to 500 Turns on the manual sweep function and the level monitor function,

and sets the oscillator level mode to Power_mode$.

Lines 520 to 600 According to the oscillator level mode, substitutes the command name

for reading the level monitor value, the range (lower limit and upper

limit) of level setting into the variables: Command$, Range_l, and

Range_u, respectively.

Lines 640 to 650 Prompts the user to connect a DUT, and waits for a press of the [Enter]

key after the connection.

Lines 670 to 700 Displays header for list of measurement results, and substitutes the

format to display the measurement results into the variable: Img$.

Lines 720 Sets the measurement point.

Lines 730 to 750 Sets the initial setting to control the oscillator level.

Lines 760 to 880 Until the difference between the test signal level (target) and the

monitor level is less than the variable: Err_limit, iterates setting and

monitoring, and updating the oscillator level. (maximum number of

iteration times is the variable: Iteration.)

Lines 890 to 970 Reads out the measurement results and displays them according to

Img$.

Lines 990 to 1010 Sets the trace A display format to Fmt_a$, and then executes the auto

scale on trace A to automatically set the scale parameters so that

waveforms fit on the screen.

Lines 1020 to 1040 Sets the trace B display format to Fmt_b$, and then executes the auto

scale on trace B to automatically set the scale parameters so that

waveforms fit on the screen.

Lines 1060 to 1070 Prompts the user to determine whether to perform a measurement

again. If the

[y] key and the [Enter] key are pressed, returns to the

DUT connection part (line 570).

Example 13-5 Measurement controlling oscillator level

10 DIM Adapter$[9],Meas_para$[9],Pow_mode$[9],Swp_type$[9]

20 DIM Fmt_a$[9],Fmt_b$[9],Buff$[9],Inp_char$[9],Img$[50]

30 REAL Start,Stop,Level,Data_a(1:2),Data_b(1:2)

40 REAL Err_limit,Range_l,Range_u

50 INTEGER Scode,Nop,Iteration,Result

60 CLEAR SCREEN

70 !

80 IF SYSTEM$("SYSTEM ID")="HP4294A" THEN

90 ASSIGN @Hp4294a TO 800

100 Scode=8

110 ELSE

120 ASSIGN @Hp4294a TO 717

130 Scode=7

140 END IF

150 !

160 Adapter$="OFF"

170 Meas_para$="IMPH"

180 Swp_type$="LOG"

190 Start=1.0E+3

200 Stop=1.0E+7

210 Nop=21

220 Fmt_a$="LOGY"

1 2 ... 220 221 222 223 224 225 226 227 228 229 230 ... 517 518

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Agilent Technologies 4294A Service Manual Page 225

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