if the display reads ARMED 4, there are four cycles left and once a cycle is completed, the
number decreases to three.
To turn the TSP OFF, press
Menu
to cycle to OFF. Then press
ENTER
.
1
2
3
4
5
6
7
8
Set Point
Set Point
Supply 1
Supply 2
DEGAS
Use DEGAS to outgas filaments that are new or have been brought up to atmosphere.
During DEGAS mode, each filament is fired once. It uses the specified ON TIME and
SUBLEVEL setup parameters, but starts firing at half the value.
For example, if current is specified at 50 amps and time at 30 seconds, then the TSP (when
enabled) ramps up to 25A for the first 15 sec and then ramps up to 50A for the remaining 15-sec.
1
2
3
4
5
6
7
8
Set Point
Set Point
Supply 1
Supply 2
When in TSP SETUP, press
Menu
to cycle to DEGAS and press
ENTER
to enable degassing.
ATTENTION: Degas pressure should be less than 1 x 10
-2
Torr.
While in degas mode, the display shows which filament is degassing and at what value. When
DEGAS is complete, the display returns to TSP SETUP. You need to reset the filament-logged
time to zero. Go to setup parameter 2, CLR FILMNT.
1
2
3
4
5
6
7
8
Set Point
Set Point
Supply 1
Supply 2
Setup parameters:
ACTIVE
The ACTIVE parameter provides two functions:
•
As an information tool, the display indicates the filament number and the total
amount of operating logged time.
•
As a setup tool, it allows you to select which filament you want to use.
When in TSP SETUP, press
Menu
to cycle to ACTIVE.
1.
Press
ENTER
to display the filament number and its total logged time.
F2 ACTIVE
1
2
3
4
5
6
7
8
Set Point
Set Point
Supply 1
Supply 2
Display
Select
Display
Select
arrow shows
bottom key is active
Options:
- F1 ACTIVE
- F2 ACTIVE
- F3 ACTIVE
- F4 ACTIVE
press to toggle
between options
Digitel MPC Manual
Page 27 of 72
