NGSLR Operations Manual
Preparing for Tracking Operations
Document Number:
P a g e |
2 5
NASA NGSLR OPS Manual (v1.0)
4.
Verify that the waveform generator is set to use waveform #1
Select the
WVFM
button, then use the
Down Arrow to display the current setting on the LCD screen (Figure 3 22).
Figure 3 22: Adjusting the Waveform Generator
5.
Turn the overhead lights
OFF
in the back area
To prevent damage to the PMT, the lights
must remain
OFF
whenever the Bertran high voltage power supply is turned ON.
Warning:
The lights in the Laser Operations Area must be OFF before proceeding to the next
step! Permanent damage to the PMT could result.
Warning:
Do not exceed the maximum voltage, or increase the voltage too quickly.
Permanent damage to the PMT could result.
6.
Power ON the Bertran high voltage power supply
Supplying power to the PMT, this device is located
under the Optical Bench (Figure 3 23).
a. Flip the
ON/OFF
toggle switch located on the left hand side to the ON position.
b. Slowly ramp up the operating voltage in 500 volt increments from 450 to 2950 volts over the
span of 1 minute.
c. The MCP should be powered on for 20 30 minutes before any data is taken.
Figure 3 23: Bertran High Voltage Power Supply
7.
Slide the protective card in front of the light tight box to the UNBLOCKED position
This is in place as a
manual backup to the shutter, but must be removed before tracking.
