NGSLR Operations Manual
Most Common Errors and Their Resolutions
Document Number:
P a g e |
6 1
NASA NGSLR OPS Manual (v1.0)
8.6.3 No returns during satellite tracking
1.
Ensure that the laser is firing
(If not, see Section 8.5)
2.
Verify the PMT beam block has been manually removed
3.
Check sky conditions to verify that clouds are not blocking the signal
4.
Verify that the PMT is ON and that noise shows up on the O C plot on RAT
5.
Verify that the dome is open
a. During the day Can you see the target in the telescope camera monitor?
b. During the night Can you see the laser reflection off of the target in the telescope camera
monitor?
6.
Add pointing bias to the telescope
7.
Verify that the meteorological data is being logged properly
Values for the pressure, temperature,
wind speed, etc. should all be within normal ranges.
8.7 The software appears to have crashed/is non responsive
If the POP software stops unexpectedly, especially when it declares a segmentation fault, then chances are
that you will need to reboot the system. If the system responds to keyboard input, perform a soft reboot. See
the section
How to do a soft reboot on POP
for more information. Please note that you will also need to reboot
the RAT laptop computer
after
you have rebooted POP.
If the DAM/POP terminal is unresponsive to keyboard input, you will need to perform a hard reboot.
Note:
Performing a hard reboot may affect both POP and DAM.
See the section
How to do a hard reboot on POP
and
How to do a hard reboot on DAM
for more details.
If both POP and DAM are rebooted you should re mount the disk drives on both of these machines. See
Remounting the disk drives on POP and DAM
.
8.7.1 How to do a soft reboot on POP
POP must be rebooted using the rack mounted keyboard.
1.
Switch to POP using the labeled button on the KVM and type:
reset <ENTER>
2.
When asked for the password, use the operator password
The computer should automatically
reboot and display the username prompt on the screen.
3.
Follow normal login procedures from this point
Note:
Whenever POP is rebooted, you must also reboot RAT. See
How to do a soft reboot on RAT
.
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