HP 8753E manual Using Sample-and-Sweep Correction Mode

Using Sample-and-Sweep Correction Mode

You can use the sample-and-sweep mode to correct the analyzer output power and update the power meter correction data table, during the initial measurement sweep. Because the analyzer measures the actual power at each frequency point during the initial sweep, the initial sweep time is significant. However, in this mode of operation the analyzer does not require the power meter for subsequent sweeps. Therefore, this mode sweeps considerably faster than the continuous correction mode.

NETWORK ANALYZER

POWER SENSOR

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Figure 5-8. Sample-and-Sweep Mode for Power Meter Calibration

1.Calibrate and zero the power meter.

2.Connect the equipment as shown in Figure 5-8.

3.Select the HP 8753E as the system controller:

4.Set the power meter’s address:

/ : :.. ..:.::~:.~.:::::~,:.,,,~ ,,:, :::.;;+;:; .,,:,,:.:. z

5.&led the appropriate power meter by pressing ~~~~:~~~~~~~~,until the come&, model number is displayed (HP 436A or HP 438A/437). .i./i.> i.>>A....s.......i_................; i_(... ..i:::::>::::::::.:.>.:.

6.Set test port power to the approximate desired corrected power.

.,.;.,	..;,:;	.._ . .	.,.,
7. Press Cal] ~~~~~ and enter the test port power level that you want at the input to
>>.i;.~~./.i		I .::..:	:.:..i /....;............~;....

your test device. For example, if you enter l-loJ @, the display will read CAL POWER -10.

8. If you want the analyzer to make more than one power measurement at each frequency

data point, press:
. . . . . . .	@ @, (where n = the number of d&red iterations).
.~~~~~~~~~~~
..: :“:::,.:.:.:.:.:.:.:.:.:.:.:.:.::~.:;~;~:::::.:~:::::::.::::,,:,:,:: ,,,,,;,.~,,.,.:.:.~.:.~.:.:: //:::>>:.:.:.:.:.:.

If you increase the number of readings, the power meter correction time will substantially increase.

Optimizing Measurement Results 537