Assembly Instructions

Navini Networks, Inc. Ripwave Base Station I&C Guide
Part #40-00047-00 Rev F v1.0 (TTA) 251
October 23, 2003
Appendix W: Local Modem Tests
Objective
Local Wired Modem Testing (then Over-The-Air Modem Testing) will verify that the Base
Station is working and able to transmit and receive data. Data rates are not being checked at this
time. Refer to Figure W1 when setting up and performing the Wired Modem procedures.
Wired Modem Test
Equipment Required
?? Modem
?? PC - Laptop with CPE debug tool. Connect to CPE with an Ethernet cable
?? Attenuator - 70dB fixed attenuation, plus 40 adjustable range with 1dB resolution
(cascade multiple attenuators)
?? Shielding box - Need to provide 80 dB isolation. Shielding box may not be needed if
the Modem cannot sync to BTS over-the-air at the test location.
Figure W1: Wired Modem Setup
CPE
PC
Attenuator
Shielding box
BTS
Calibration
cable
Modem
PC
Attenuator
Shielding box
BTS
Calibration
cable
CPE
PC
Attenuator
Shielding box
BTS
Calibration
cable
Modem
PC
Attenuator
Shielding box
BTS
Calibration
cable
Modem
PC
Attenuator
Shielding box
BTS
Calibration
cable