Anritsu S251C manual 4-17, Measurements, Device Under Test, Tma-D, Procedure

Chapter 4 Measurements

Device Under Test

￿TMA-D

Procedure

Step 1. Connect the External Power Supply (40-115) to the Site Master. Step 2. Turn on the Site Master and press the MODE key.

Step 3. Select INSERTION GAIN (–30 dBm) using the Up/Down arrow key and press

ENTER.

Step 4. Press the FREQ/DIST key to set the frequency limits. For a TMA-D amplifier, set F1 to 1800 MHz and F2 to 1990 MHz.

Step 5. Perform a two-port calibration of the Site Master (page 3-4).

Step 6. Connect the RF Out port of the Site Master to the ANT connector of the TMA. Step 7. Connect the RF In port of the Site Master to the RX connector of the TMA

TMA-D

TEST PORT CABLE (OPTIONAL)

RF IN TEST PORT

EXTERNAL POWER

SUPPLY (40-115)

RX TX ANT

TEST PORT CABLE (OPTIONAL)

RF OUT TEST PORT

(BIAS TEE)

Site Master S251C

1 2

START AUTO

CAL SCALE

3 4

SAVE RECALL

SETUP SETUP

5 6

LIMIT MARKER

7 8

ESCAPE

CLEAR

ENTER

SAVE RECALL RUN

DISPLAY DISPLAY HOLD

9 0 +/-

ON PRINT

OFF.

MODE FREQ/DIST AMPLITUDE SWEEP

Figure 4-13. TMA-D Measurement Setup

SYS

Step 8. Press the MARKER key and set marker set M1 to 1834 MHz and marker M2 to 1871 MHz

Step 9. Press the SYS key, then OPTIONS, then BIAS TEE to turn on the bias tee volt- age. The gain is the level change before and after the bias tee voltage is turned on.

4-17