3.
2. Switch to the other filament
1. Front panel - page 25 (SETUP IG --> FILAMENT
NUM --> FILAMENT 1/2)
2. RS485 - page 32
3. Contact [email protected] with resistance values
1. Possibly need to replace the sensor or electronics
R&D MODE Troubleshooting
1. SETUP DISP --> MODE --> RESEARCH
Filament voltage values are
present for several
seconds immediately after
turning IG ON, but then the
values are zero
1. Filament is contaminated
or filament has reached
end-of-useful operating
life for required emission
current setting
1. Check filament current in R&D Mode
1. MENU --> SETUP DISP --> MODE and select
RESEARCH. After going to top of menu, it should
display several things including FVI. The first digits
are filament voltage, the second digits are current.
i.
If voltage > 1.7 V and current is > 2.5 A at 100
uA setting, there is possible contamination
ii.
If voltage > 2.3 V and current is > 2.7 A at 4
mA setting, there is possible contamination.
2. Switch emission current setting from initial setting and re-
start the IG; make several attempts to establish emission
current at both 100
μA and 4 mA.
1. Front panel - page 24 (EMISSION SEL --> 4mA /
100 uA)
2. RS485 - page 32
3. Degas sensor if values exceed limits from point 1
1. Degassing basic information, page 16 of manual
2. Front Panel Control --> DEGAS ON
3. RS-485 - page 32 of manual
4. Re-check R&D Mode Values. If nothing changed, sensor
is contaminated.
5. Switch to second filament
1. Front panel - page 25 (SETUP IG --> FILAMENT
NUM --> FILAMENT 1/2)
2. RS485 - page 32
