Anritsu S251B manual Selecting the Frequency Range, Performing a Calibration, Measurements

Chapter 4 Measurements

Step 3. Press the ENTER key to select the measurement mode.

	LOAD
	OPEN
TEST PORT CABLE	SHORT
(OPTIONAL)	LOAD

TEST PORT CABLE (OPTIONAL)

RF IN TEST PORT

RF OUT TEST PORT

Site Master S251B

1 2

START AUTO

CAL SCALE

3 4

ESCAPE

CLEAR

			SAVE	RECALL
			SETUP	SETUP
			5	6
			LIMIT	MARKER
			7	8	ENTER
			SAVE	RECALL	RUN
			DISPLAY	DISPLAY	HOLD
			9	0	+/-
625.0			2500.0
1384.45 MHz
2096.66 MHz			ON	PRINT	SYS
			OFF	.
MODE	FREQ/DIST	AMPLITUDE	SWEEP

Figure 4-2. Two-Port Measurement Calibration Setup

Selecting the Frequency Range

The following procedure selects the frequency range for the calibration.

Step 4. Press the FREQ/DIST key.

Step 5. Press the F1 soft key.

Step 6. Enter 6, 2, 5 or a user-defined frequency using the key pad or the Up/Down ar- row key.

Step 7. Press ENTER to set F1 to 625 MHz or the user-defined frequency. Step 8. Press the F2 soft key.

Step 9. Enter 2, 5, 0, 0 or a user-defined frequency using the keypad or the Up/Down ar- row key.

Step 10. Press ENTER to set F2 to 2500 MHz or the user-defined frequency.

Step 11. Check that the FREQ (MHz) scale in the display area indicates the new fre- quency start and stop values (for example: F1 = 625 MHz, F2 = 2500 MHz).

Performing a Calibration

The following procedures detail how to perform the calibrations. Steps 12 through 15 de- scribe OSL calibration, while steps 16 and 17 apply only to OSLT calibration.

Step 12. Press the START CAL key. The message “CONNECT OPEN TO RF OUT PORT” will appear in the display.

Step 13. Connect the calibrated Open and press the ENTER key. The messages “Mea-

suring OPEN” and “CONNECT SHORT TO RF OUT” will appear.

Step 14. Remove the Open, connect the calibrated Short and press the ENTER key. The messages “MEASURING SHORT” and “CONNECT LOAD TO RF OUT” will appear.

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