Справочник Пользователя для IP Mobilenet LLC M32450-25

 

 

M32450-25-FCCRpt.doc  

Page 

14

 

closely monitor the variation in transmit frequency due to these different messages and 
ensure that on average the transit frequency error has been minimized to within +/-100 Hz. 
This indicates that some of these test messages will be slightly high in frequency, some 
messages will be slightly low in frequency, and some messages will be right on frequency.  

 
Step 4 

Verify the transmit deviation is 4.9 kHz 

 
Step 5 

Verify the timing characteristics are identical to the plots in the next section, Uplink 
Hardware Timing Verification. 

 
Step 6 

At the base station monitor PC, verify that all the data quality readings are 240 and higher. 

 
Step 7 

Move the scope probes to monitor the timing at the mobile radio as described in Downlink 
Hardware Timing Verification. Generate test messages by pinging the IPNC from the PC 
attached to the radio.  The following command will cause 100 pings, 500 bytes in length to be 
transmitted from the mobile radio and echoed by the IPNC through the base station: 

 

 
Step 8 Set 

 on the radio 

 
Step 9 

Verify the timing characteristics are identical to those in Downlink Hardware Timing 
Verification. 

 
Step 10 

Verify that both receivers on the mobile radio report data quality readings of 240 or higher 
(248 is typical).  This can be accomplished by installing the antenna on the TX/RX1 port and 
verifying RX1 is selected by observing the RX1 LED on the mobile radio and installing the 
antenna on the RX2 port and verifying RX2 is selected by observing the RX2 LED on the 
mobile radio. 

 
Step 11 Reset 

 on the radio 

 
Step 12 In 

IPMessage, type the 

 command to radio.  Copy the radio settings and paste them into the 

Test Data File. 

 
Step 13 

Perform a close visual inspection of the radio closely inspecting manufacturing related 
problems (loose screws, solder particles, etc.).