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7
Place the front-panel switch "control/sweep select" in the
"sweep select" position.
Telemark TT-6 Power Supply
B Switch the Sweep Select Module's control-select toggle-switch
(labeled "manual/auto'; to 'manual.' Turn the rotary switch
labeled "select" to pattern-bank channel 1.
9
Switch the channel's mode switch to "man" (manual).
10
Bring the E-beam Power Supply's Emission up slowly and use
the Sweep Select's channel 1 position knobs to center the
beam in the crucible pocket. Turn the Emission down.
11
Repeat the last three steps for each of the other pattern-bank
channels.
12 If more than one Sweep Select Module is to be used (for
additional pattern storage), it is advisable to center the
channels at this time.
XV Sweep with Memory Module Operation
The system is now operational. The position of the E-beam in the crucible can be
moved or swept by adjustment of the Sweeper removable module controls.
Patterns are determined using the Controller/Joystick Module while watching the
E-beam in the vacuum tank's EB gun crucible. Once setup and positioned, they
can be copied to Sweep Select Module pattern-bank channels even with Emission
off: visually match front-panel LED bargraph-display motions controlled by the
joystick system with those controlled by the Sweep Select channels. Once
patterns are complete, it is best to check them with low Emission into the tank.
Note The E-beam shape may be affected somewhat as Emission output is later
increased to high levels. If the E-beam spreads, the pattern may end up
sweeping wider areas than previously calibrated.
CAUTION: always keep the E-beam in the crucible pocket.
Power Supply Shutdown
1 Reduce the EMISSION ADJUST potentiometer to zero. The
indicated emission current should go to zero. If it does not, the
bias setting is too high and should be reduced.
2
Turn off the high voltage and emission by depressing the OFF
push-button. The indicated voltage level will go to zero.
Note: Allow two minutes for the unit to cool down before
proceeding.
OPERATION
5-3