User's Manual

CSM System Time – GPS & LFR/HSO Verification68P09258A31–A
Oct 2003
1X SCt 4812T BTS Optimization/ATP
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Table 3-21: LFR Initialization/Verification
Step Action Note
1 At the CSM> prompt, enter lstatus <cr> to verify that the LFR is in tracking
mode. A typical response is:
mode
.
A typical response is:
CSM> lstatus <cr>
LFR St ti St t
LFR Station Status:
Clock coherence: 512 >
5930M 51/60 dB 0 S/N Flag:
5930X 52/64 dn –1 S/N Flag:
5990 47/55 dB –6 S/N Flag:
7980M 62/66 dB 10 S/N Fl
This must be greater
than 100 before LFR
becomes a valid source.
7980M 62/66 dB 10 S/N Flag:
7980W 65/69 dB 14 S/N Flag: . PLL Station . >
7980X 48/54 dB –4 S/N Flag:
7980Y 46/58 dB –8 S/N Flag:E
7980Z 60/67 dB 8 S/N Flag:
8290M 50/65 dB 0 S/N Flag:
This shows the LFR is
locked to the selected
PLL station.
8290M 50/65 dB 0 S/N Flag:
8290W 73/79 dB 20 S/N Flag:
8290W 58/61 dB 6 S/N Flag:
8290W 58/61 dB 6 S/N Flag:
8970M 89/95 dB 29 S/N Flag:
8970W 62/66 dB 10 S/N Flag:
8970X 73/79 dB 22 S/N Flag:
8970X 73/79 dB 22 S/N Fl
ag:
8970Y 73/79 dB 19 S/N Flag:
8970Z 62/65 dB 10 S/N Flag:
9610M 62/65 dB 10 S/N Fl
g
9610M 62/65 dB 10 S/N Flag:
9610V 58/61 dB 8 S/N Flag:
9610W 47/49 dB –4 S/N Fla
g
:E
9610W 47/49 dB –4 S/N Flag:E
9610X 46/57 dB –5 S/N Flag:E
9610Y 48/54 dB –5 S/N Flag:E
9610Z 65/69 dB 12 S/N Flag:
9610Z 65/69 dB 12 S/N Flag:
9940M 50/53 dB –1 S/N Flag:S
9940W 49/56 dB –4 S/N Flag:E
9940W 49/56 dB 4 S/N Flag:E
9940Y 46/50 dB–10 S/N Flag:E
9960M 73/79 dB 22 S/N Flag:
9960W 51/60 dB 0 S/N Flag:
9960W 51/60 dB 0 S/N Fl
ag:
9960X 51/63 dB –1 S/N Flag:
9960Y 59/67 dB 8 S/N Flag:
9960Z 89/96 dB 29 S/N Fl
9960Z 89/96 dB 29 S/N Flag:
LFR Task State: lfr locked to station 7980W
LFR Recent Change Data:
Search List: 5930 5990 7980 8290 8970 9940 9610 9960 >
PLL GRI: 7980W
LFR Master, reset not needed, not the reference source.
CSM>
This search list and PLL
data must match the
configuration for the
geographical location
of the cell site.
2 Verify the following LFR information (highlighted above in boldface type):
– Locate the “dot” that indicates the current phase locked station assignment (assigned by MM).
– Verify that the station call letters are as specified in site documentation as well as M X Y Z
assignment.
– Verify the signal to noise (S/N) ratio of the phase locked station is greater than 8.
3 At the CSM> prompt, enter sources <cr> to display the current status of the the LORAN receiver.
– Observe the following typical response.
Num Source Name Type TO Good Status Last Phase Target Phase Valid
––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––
0 Local GPS Primary 4 Yes Good –3 0 Yes
1 LFR ch A Secondary 4 Yes
Good –2013177 –2013177 Yes
2 Not used
Current reference source number: 1
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