User's Manual

Navini Networks, Inc. Ripwave Base Station I&C Guide
Part #40-00047-00 Rev D v1.0 103
February 28, 2003
Receive Verification
This test verifies the Receive function of the Base Station.
Equipment Required
• Signal Generator - Agilent 8648C, or equivalent, tunable to the RFS center frequency
• Oscilloscope – Agilent 54622 D, or equivalent
• Test cable (optional)
• Test Channel Processor board
Note: Some test equipment may have a DC block for input protection. If so, do not remove the
DC block from the equipment.
Equipment Settings
Ensure that the Signal Generator and the Spectrum Analyzer have been allowed to warm up for
15 minutes before beginning testing.
Signal Generator:
• Output frequency = Base Station center frequency + 300 KHz (i.e. if the center frequency
of the BTS is 2640.5 MHz, set the Signal Generator frequency to 2640.8 MHz).
• Output power = The RF Power injected at the cal cable to get sensitivity at the antenna
(line 25) of the Base Station Calibration Verification Form. This value cannot be obtained
until steps 1 – 5 of this test are performed.
Oscilloscope:
• Horizontal sweep = 100 us/division
• Amplitude = 200 mV/division. Setting is arbitrary depending on the environment. It
should be as low as possible, while still being able to differentiate between signals.
• Channel = AC coupled
• Bandwidth (BW) = 20 MHz
• Limiting = on
• Trigger = EXT (or channel 2 if used)