In ser tion gain (am pli fier) mea sure ment 4-22, Re quired equip ment 4-22, De vice-un der-test spec i fi ca tion 4-22 – Anritsu S251B User Manual
Page 68: Pro ce dure 4-22, Se lecting the mea sure ment 4-22, Se lecting the fre quency range 4-22, Per forming a cal i bra tion 4-22, Insertion gain (amplifier) measurement -22, Required equipment -22, Device-under-test specification -22
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
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.
4-22
Chapter 4 Measurements
Type
Frequency Range
Gain (Typical)
TMA
1885 to 1990 MHz
1965 to 1990 MHz
+12 dB
–0.5 dB