Agilent Technologies HP 8566B Spécifications télécharger pdf (Page 241)

11. Down/Up Converter Adjustments

Note

The adjustment of A4A6AlR29 WIDE GAIN is affected by

factory-select component

A4A7R60,

which sets the overall gain of

the

A4A7

3 MHz Bandwidth Filter Assembly. If the

A4A7

3 MHz

Bandwidth Filter Assembly or the

A4A5

Step Gain Assembly is

repaired or replaced, perform Adjustment Procedure 10, “Step Gain

and 18.4 MHz Local Oscillator Adjustments” to select (if necessary)

A4A7R60

before adjusting A4A6AlR29 WIDE GAIN (steps 14-17).

1. Position the spectrum analyzer upright as shown in Figure 3-50

and remove the IF-Display Section top cover.

2. Set the spectrum analyzer LINE switch to ON and press

[GHz_).

3. Connect the spectrum analyzer CAL OUTPUT to the RF INPUT.

4. On the spectrum analyzer, key in [RECALL-] 8 and adjust the

front-panel AMPTD CAL control for a displayed signal level of

-10.00

dBm.

5. On the spectrum analyzer, key in

(ml

9 and adjust the

front-panel FREQ ZERO control for maximum amplitude of the

displayed signal.

A4A6

DOWN/UP CONVERTER

A4A6

Figure 3-51. Location of Down/Up Converter Adjustments

Down

Converter

Gain

Adjustment

Note

Perform steps 6 through 15 if the

A4A6

Down/Up Converter Assembly

has been repaired, or if factory-select component

A4A7R60

has

insufficient adjustment range. Otherwise, skip to step 17.

6. Set the spectrum analyzer LINE switch to STANDBY. Remove

A4A6

Down/Up Converter Assembly from the IF-Display Section

and install on two extender boards.

7. Set the spectrum analyzer LINE switch to ON, and key in

(2-22GHz),

(CENTER FREQUENCY) 100 MHZ,

(FREQUENCY

SPAN] 0 HZ,

(mBW)

kHz,

[REFERENCE LEVEL) -10

dBm.

8. Connect the active probe to the probe power supply and the

RF INPUT of the second spectrum analyzer, as shown in Figure

3-50. On the second spectrum analyzer, key in

1-1,

Adjustments

3-l

1 2 ... 236 237 238 239 240 241 242 243 244 245 246 ... 404 405

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Agilent Technologies HP 8566B Spécifications Page 241

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