11-065 Filament Current Test

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This blog post shows you how to test the filament current supply on an 11-065 when it is connected to the 04-303 ion source.

Make sure that the 11-065 main power switch is OFF and then remove all cables and the power cord. Put the 11-065 on the table top or bench. Note that you will need to connect the black high voltage cable from J9 on the back of the 11-065 to the 04-303 ion source.

Remove the top cover on the 11-065.

11-065 Top Cover

Remove the High Voltage cover on the right hand side. Remove the 4 outside screws, not the 4 inside screws.

11-065 high voltage cover
Remove 4 outside screws

The two high voltage boards are now visible.

HV2 board is on the left, HV1 board is on the right

On the right hand HV1 board, E93 is the high voltage output, E92 and E91 are the filament current output connectors. With the 11-065 power OFF and the high voltage OFF and set to zero, unplug the E92 connector and then connect a current meter that can go up to 10 amps DC between the E92 cable lug and the E92 connector on the HV1 board. Make sure that the meter leads are not touching anything.

CAUTION! High voltages can be present on this board. As long as you have the high voltage on the 11-065 set to zero (fully CCW) and the high voltage switch set to off, then there is no high voltage present. Refer this test to someone who is trained to work safety with high voltage if you are not familiar with operating a DVM.

Remove E92 cable from HV1 board.
Fluke meter set to 10 amps DC

Make sure that the beam voltage switch is set to zero and the beam voltage control potentiometer is turned fully CCW.

Beam voltage set to OFF and control potentiometer set to zero (fully CCW)

Connect the black high voltage cable between the 11-065 and the 04-303 ion source. Connect the main power cable to the back of the 11-065.

Make sure that the Emission adjust potentiometer is fully CCW and that the emission scale switch is in the X1 position,and then turn on the 11-065 main power. The emission current should be zero.

When the 11-065 is turned on the emission current should be zero.

Slowly turn up the emission current (turn CW) until you get 25 mA of emission current.

Emission current set to 25mA with the emission scale set to X 1.

The DC current meter should read approximately 2.7 amps DC current at 25 mA of emission current on the 11-065 emission meter.

2.7 amps DC current with the emission current set to 25mA

If your emission current shoots up to 50mA when the 11-065 is first turned on or when the emission current is turned up then there is a problem with the 11-065 filament current circuit or the emission feedback circuit.

If you do not get any filament current then there is a problem with the 11-065 filament circuit or the ionizer in the 11-065.

For help with repairing your 11-065 controller please contact RBD Instruments for assistance.

Electron multipliers for older PHI AES and XPS systems

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4831G Channeltron Electron Multiplier

The original channeltron and channel plate electron multipliers for the older PHI (Physical Electronics) AES and XPS systems are still available through Photonis.  The cost of these parts has increased substantially in the last few years, so be prepared for sticker shock the next time you need a channeltron or a set of channel plates!

Here are the Photonis part numbers for the different PHI systems:

Model NumberWhere usedPhotonis Part Number
4831G15-255G, 25-120, 25-120A, 25-130, 25-270 and 25-260 cylindrical mirror analyzers. 06-600 SIMS, 590 through 660 scanning AES systems30129
483910-150 and 10-155 CMA30131
48215100, 5300 and 5400 XPS systems 10-360 SCA single channel detector30117
PSD detector channel plate matched set EDR5400 XPS system 10-360 SCA PSD  position sensitive detector30300
MCD chevron plate set EDR5500 through 5800 XPS 10-360 SCA MCD 16 channel detector30410

For a quotation you can call 1-508-347-4000 or request a quotation at this URL –

https://www.photonis.com/products/microchannel-plates

20-040 X-ray source power supply LOCAL REMOTE switch

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The 20-040 X-ray source power supply is used on some of the older PHI X-ray photoelectron spectroscopy (XPS) systems. There is a switch on the back of the 20-040 that needs to be set to the LOCAL position. When in the LOCAL position the high voltage is set by the user but the 32-095 or 32-096 X-ray source control turns the 20-040 high voltage on and off. Sometimes the LOCAL / REMOTE switch can become oxidized in which case the 20-040 high voltage may not turn on. This post explains how to remove the LOCAL / REMOTE switch and hard wire the board to the LOCAL position.

20-040 front panel
20-040 front panel

Make sure that the 20-040 main power switch is OFF and then unplug all cables from the back of the 20-040 and remove the 20-040 from the electronics console.

Remove the top cover (8 cross head screws).

Unscrew the nut on the LOCAL / REMOTE switch and also unscrew the two nuts on the 15 pin connector. Unplug the 3 pin connector on the top of the board, the larger bottom connector can stay attached.

On the back of the little board that the LOCAL / REMOTE switch is attached to you can see where the switch is soldered to the board. Un-solder and remove the switch. A solder sucker works well but you can also use some solder wick.

Solder some jumper wires between the pins as shown in the image below.

20-040 board with jumpers installed

Reattach the 3 pin connector and then insert the 15 pin connector back into the slot and use the two nuts to attach the board to the back chassis. I also added a plastic screw and nut to block the hole that remains after removing the switch. You can also just leave that hole open.

Plastic nut
Hole plugged

Replace the cover and tighten the 8 cover screws.

Make sure that the 20-040 main power switch is still OFF and then insert the 20-040 back into the electronics console and reattach all the cables to the back of the 20-040.

Below is a table that shows the pin outs on the control cable that goes between the 32-095/6 and the 20-040.

Removing the LOCAL / REMOTE switch eliminates the switch as a cause of lack of high voltage with the 20-040. If your 20-040 does not work and can’t be repaired, then RBD Instruments provides a drop in replacement, the 20-042.

https://rbdinstruments.com/phi/x-ray-hv-supply.html