TransCore 2611SS ユーザーズマニュアル
IT2200 Reader System with Multimode Capability Installation & Maintenance/Service Guide
6-16
Measuring Power and VSWR
1.
Connect the RF jumper cable from the RF module transmit
port to the wattmeter input port.
port to the wattmeter input port.
2.
Connect the antenna cable to the wattmeter output port.
3.
Person 1: Select Continuous Uplink on the host software.
4.
Person 2: Measure uplink power. It should be 28 to 30 dBm.
5.
Measure the VSWR of the transmit antenna. It should be a
maximum of 1.6:1.
maximum of 1.6:1.
6.
If VSWR is out of tolerance, test the antenna cable near the
connectors by moving it. Any significant change in VSWR
indicates a poorly terminated connection. Have Person 1
disable the continuous uplink, then replace the antenna cable
and repeat Steps 10 and 12. If the VSWR is still out of
tolerance, replace the transmit antenna.
connectors by moving it. Any significant change in VSWR
indicates a poorly terminated connection. Have Person 1
disable the continuous uplink, then replace the antenna cable
and repeat Steps 10 and 12. If the VSWR is still out of
tolerance, replace the transmit antenna.
7.
Person 1: Disable the uplink.
8.
Person 2: Disconnect the transmit antenna from the wattmeter
and connect the receive antenna.
and connect the receive antenna.
9.
Person 1: Select Continuous Uplink on the engineering host
software diagnostics.
software diagnostics.
10. Person 2: Measure the VSWR of the receive antenna. It should
be a maximum of 1.6:1.
11. If VSWR is out of tolerance, test the antenna cable near the
connectors by moving it. Any significant change in VSWR
indicates a poorly terminated connection. Have Person 1
disable the continuous uplink, then replace the antenna cable
and repeat Steps 16 and 17. If the VSWR is still out of
tolerance, replace the receive antenna.
indicates a poorly terminated connection. Have Person 1
disable the continuous uplink, then replace the antenna cable
and repeat Steps 16 and 17. If the VSWR is still out of
tolerance, replace the receive antenna.
12. Person 1: Disable the uplink and select Continuous
Downlink RF.
13. Person 2: Measure downlink power. It should be 20 to 27
dBm.
If the previous procedures did not reveal a problem, replace the
reader logic card and retest the system.
reader logic card and retest the system.
Table 6-8 Spotty Pattern or Low Handshake Counts (continued)
Indication
Action