Anritsu S113C Guia do Utilizador descarregar pdf (Página 3)

(g) Press the 1, 0 and kHz keys sequen

-

tially to change the RBW to 10 kHz.

(h) Press the

VBW key.

(i) Press the

Filter Off soft key (F3) to

turn the VB filter off.

(j) Press the

Amplitude key.

(k) Press the

1, 0, and dBm keys sequen

-

tially to change the Reference Level

to 10 dBm.

(l) Press the

Log Scale soft key (F5)

(m) Select

2 dB/Div (F3) and the press the

return soft key (F6).

(n) Press the

Marker key.

(o) Press the

Zone Width soft key (F5).

(p) Select the

Spot soft key (F1).

6. On the Site Master, press the

SYS key,

the

OPTIONS soft key and then the FIXED

CW

soft key to turn Fixed CW on.

NOTE:

If the Site Master has gone into

the hold mode, press the

RUN/HOLD key to return to normal

mode.

7. On the Spectrum Analyzer, press the

A, B

and then the Storage key (F5).

8. Press the

Max Hold soft key (F2).

9. A peak response should appear on the

Spectrum Analyzer.

10. Press the

Marker Peak Search key on the

Spectrum Analyzer. Verify that the

marker peak readout value is 1000 MHz

±75 kHz.

11. On the Site Master, press the

SYS key,

the

OPTIONS soft key and then the FIXED

CW

soft key to turn Fixed CW Off.

5. RETURN LOSS VERIFICATION

The following test can be used to verify the accuracy

of return loss measurements. Measurement calibra

-

tion of the Site Master is required for this test.

a. Equipment Required:

·

20 dB offset, Anritsu SC5270

·

6 dB offset, Anritsu SC5237

·

Open/Short, Anritsu 22N50

·

50 Ohm Termination,

Anritsu 28N50-2 or SM/PL

b. Procedure:

1. Press and hold the

ESCAPE/CLEAR key,

then press the

ON/OFF key to turn on the

Site Master. (This sets the instrument to

the factory preset state.)

NOTE

Before continuing, allow a five

minute warm up for the internal

circuitry to stabilize.

2. Press the

MODE soft key.

3. Use the Up/Down Arrow key to highlight

RETURN LOSS, then press ENTER.

4. Press the

START CAL key.

5. Follow the instructions on the screen to

perform a calibration using a 22N50

Open/Short and 28N50-2 or SM/PL Ter

-

mination.

6. Connect the 20 dB offset to the Refl Test

Port and verify that the reading is:

q

S113C/S115BQ: 20 dB ± 1.7 dB

q

S331C: 20 dB ± 1.7 dB

7. Connect the 6 dB offset to the Refl Test

Port and verify that the reading is:

q

S113C/S115BQ: 6 dB ± 1.2 dB

q

S331C: 6 dB ± 1.2 dB.

Site Master S113C/S331C/S115BQ MM 3

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