Assembly Instructions

Navini Networks, Inc. Ripwave Base Station I&C Guide
Part #40-00047-00 Rev F v1.0 (TTA) 249
October 23, 2003
H. Attenuation (D13)
Enter the attenuation value inserted into calibration path.
I. Total Path loss (D14)
Excel will enter the calculated value of the total path loss.
J. Receiver sensitivity (in EMS) (D15)
Enter the same number entered in the EMS under Air Interface > Layer 1 > General
tab > RX sensitivity.
K. Antenna power (in EMS) (D16)
Enter the same number entered in the EMS under Air Interface > Layer 1 > General
tab > Antenna power.
L. Antenna gain (D17)
Enter gain value of antenna elements.
II. Section 2: Cable and RFS performance
A. Cable loss (B30-D38)
Enter the values measured during the cable sweeps. Include the minus sign on all
entries. Include jumpers and surge protectors.
B. Insertion loss through cal cable and RFS (C44-E59)
Enter values measured during the RF sweeps of the cables and the RFS. Include the
minus sign for all entries.
C. Cal path loss (calculated) (H44-H58)
Calculated value based on absolute loss measured during RF sweeps. The measured
cable loss for antenna 1 plus 3dB for inherent loss in RFS (internal cables and LNA
loss) is subtracted from the measured TX path loss to give absolute calibration path
loss. It is important to check this value to ensure that it does not exceed –45 dB.
D. LNA gain (calculated) (J45-L59)
Calculated value based on absolute loss measured during RF sweeps. The absolute
value of the difference between TX path loss and RX path loss equals LNA gain for
each antenna path.
III. Section 3: Receiver Performance
A. Power splitter loss (in EMS) (A69-A76)
Before calibrating, the script must have been run to enter the decimal values of the
calibration board loss for each path. Enter those same values here.
B. UL TCC power (C69-C76)
From Beamforming Display, enter the value from the "Tcc receive signal strength"
field. There should be only one carrier active. This is the relative power per code
channel, referenced to RX sensitivity, of that carrier, being received by the Base
Station.
C. UL SNR (E69-E76)
Enter the value from the Beamforming Display. This value can be found just above
the TCC value in the same carrier column.
D. Absolute Signal strength (G69-G76)
Calculated signal strength of the receive signal converted to 5 MHz BW. TCC power
per code channel is converted to absolute by adding RX sensitivity and then
subtracting spreading gain. Multiple antenna gain is then added to show receive