Testing on a Network Device with a Remotely-Mounted 900 MHz Antenna
Antenna Return Loss Test: Complete a return loss test of the remote antenna on the
ground prior to installation. Determine the quality of the impedance match to 50-ohms at
the antenna connector. This test is performed with the test equipment calibrated for a one-
port return loss measurement to the end of the test cable. Ensure that the antenna is
positioned vertically, at least 24" above the ground, and at least 24" away from any
metallic structure or equipment.
1. Configure the test equipment in return loss mode and calibrate.
2. Identify if the antenna passes or fails based on antenna manufactures specification.
For more information about the antenna specifications, see Itron ChoiceConnect
900MHz Antenna Specifications on page 89.
3. Save the trace for printing. This shall include site and sector numbers for
identification.
System Test Parameters:
Sweep Range: 902 - 928 MHz
Markers: M1 - 902 MHz, M2 – 928 MHz
Overall System Return Loss Test: Sweep test of entire transmission system including:
antenna, coax, jumpers, and protection devices. Parameters of tests to be provided. While
monitoring the sweep results, move connectors on jumpers and coax to ensure all
connections are reliable. There should be no variance in sweep tests while stressing
connections. The purpose of this test is to ensure total system return loss is within
acceptable limits.
1. Configure the test equipment in return loss mode and calibrate.
2. Identify if the system return loss passes or fails. The antenna specifications are
attached to this document as Attachment B.
3. Save the trace for printing. This shall include site and sector numbers for
identification.
System Test Parameters:
Sweep Range: 902 - 928 MHz
Markers: M1 - 902 MHz, M2 – 928 MHz
Insertion Loss Tests: Perform with test equipment connected to bottom jumper, and
calibrated short at the top jumper. The purpose of this test is to verify that insertion loss is
within acceptable limits.
Insertion Loss Test Parameters:
Sweep Range: 902 - 928 MHz
Markers: M1 - Peak R/L, M2 – Valley R/L
Passing is determined by comparing measured insertion loss to the calculated
insertion loss. Results should be no more than 1 dB over the calculated loss.
TDC-0971-011 CCU 100 and Repeater 100 Installation Guide 83
Proprietary and Confidential
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