Anritsu S251B 4-22, Insertion Gain Amplifier Measurement, Selecting the Measurement, Procedure

Chapter 4 Measurements

Insertion Gain (Amplifier) Measurement

The following frequency domain measurement is an example of a Insertion Gain (Ampli- fier) measurement over a selectable frequency range. Insertion loss measurements, such as antenna-to-antenna isolation and filter rejection (isolation), follow the same procedures as below except in Insertion Loss (+6 dBm) measurement mode.

Required Equipment

￿Site Master Model S251B

￿(2) Precision 7/16(f) Open/Short/Load, Anritsu 2000-768

￿(2) N (m) to 7/16 (m) Test Port Extension Cables, Anritsu 15NNF50-1.5A or

(2) N (m) to N (f) Test Port Cables and (2) N (m) to 7/16 (m) adaptors (510-92)

￿7/16 (f) Adapter, Anritsu 510-97

￿Tower Mount Amplifier, Ericsson A57001HQ85 or equivalent

Device-Under-Test Specification

Type	Frequency Range	Gain (Typical)
TMA	1885 to 1990 MHz	+12 dB
	1965 to 1990 MHz	–0.5 dB

Procedure

Step 1. Press the ON/OFF key on the Site Master.

Selecting the Measurement

Step 2. Press the MODE soft key.

Step 3. Use the Up/Down Arrow key to scroll to INSERTION GAIN (–30 dBm). Press the ENTER key to select insertion gain measurement mode.

Selecting the Frequency Range

Step 4. Press the FREQ soft key.

Step 5. Press the F1 soft key.

Step 6. Enter 1, 8, 0, 0 using the keypad or Up/Down Arrow key. Press ENTER to set F1 to 1800 MHz.

Step 7. Press the F2 soft key.

Step 8. Enter 2, 1 ,0, 0 using the keypad or Up/Down Arrow key. Press ENTER to set F2 to 2100 MHz.

Performing a Calibration

Step 9. Connect the test port extension cables to the RF In and RF Out test ports as shown in Figure 4-17.

Step 10. Press the START CAL key. Follow the instructions in the message area.

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