Telemark TT CHEETAH Series User manual

1
TT CHEETAH SERIES
ELECTRON BEAM POWER SUPPLY
INSTRUCTION MANUAL
Copyright ©TELEMARK, 2018 –All rights reserved
March 2018
telemark.com
Brand and product names are trademarks or
registered trademarks of their respective companies.
Current version of this manual can be found at
https://telemark.com/e-beam-power-supplies/tetrode-tube/

Telemark TT Cheetah Series Power Supply Instruction Manual
2
WARRANTY
The TT Electron Beam Power Supply is guaranteed against faulty materials, function and
workmanship for a period of 12 months after shipment from the Telemark factory.
Components which are purchased by Telemark from other manufacturers will be guaranteed
for any lesser time that such manufacturer warrants its products to Telemark. This warranty is
valid only for normal use where regular maintenance is performed as instructed. This
warranty shall not apply if repair has been performed or alterations made by anyone other
than authorized Telemark service representatives, or if a malfunction or damage occurs
through abuse, misuse, negligence or accident. No charge will be made for repairs made
under warranty at a Telemark service facility. Freight costs both ways will be at customer’s
expense. Telemark reserves the right to determine if the malfunction was caused by faulty
materials or workmanship.
USER RESPONSIBILITY
The user is responsible for proper operation and ordinary maintenance of the equipment,
following procedures described in this manual, including reference documents. Proper
operation includes timely replacement of parts that are missing, broken or plainly worn. If the
user has a reasonable doubt about understanding the use or installation of a component,
Telemark Technical Service should be contacted.
It is vitally important that the user properly install the equipment as described in Chapter 4
(Installation) of this manual. The warranty will be void if the equipment is improperly
installed and/or improperly grounded.
Alteration of the design or any function of the equipment voids the warranty and is entirely the
responsibility of the user.

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SAFETY WARNINGS
This power supply operates at a high enough voltage and possesses sufficient stored energy
to be capable of killing a human.
DO NOT TAKE SAFETY FOR GRANTED
Pay strict attention to safety information and warnings in this manual.
This power supply produces extremely high voltages. DO NOT attempt to
adjust any load connection with high voltage on. DO NOT attempt to open the
power supply enclosure unless the manual has been thoroughly reviewed and
the internal layout is understood. Never reach into the enclosure unless the
power has been disconnected and the output is fully discharged. Be certain of
safety ground connections.
Assuming that high voltage is always ON is the best way to avoid hazard to
personnel. Always shut off the supply circuit breaker(s) and follow an
appropriate grounding procedure to discharge the output before touching any
exposed connections.
DO NOT rely on the power supply’s instrumentation or controls to determine
that the output is safely discharged. The sensors are driven by amplifiers,
which are powered by an internal low voltage power supply, as are the
indicator LEDs. There may be dangerous voltages present on the output,
even if the unit appears “dead”.
The high voltage output is automatically discharged internally when HV is
turned off. Although redundancy is designed into the discharge circuit, in the
unlikely event of component failure the output may remain charged long after
power is disconnected if not manually discharged!
DO NOT allow anyone who has not reviewed the manual to perform any part
of the installation process or to attempt servicing of the power supply. Any
questions must be brought to the attention of Telemark's service personnel.
DO NOT obstruct the cooling inlets or outlets. Overheating can result, which
may damage the power supply.

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TABLE OF CONTENTS
1 UNPACKING 6
2 GENERAL DESCRIPTION 7
3 SPECIFICATIONS 8
4 INSTALLATION 10
Introduction 10
Mechanical 11
System Grounding Practice............................................................. 11
Grounding 11
Ground Connections 12
Interlock Connections 13
Power Tube Installation................................................................... 13
Input Voltage Selection ................................................................... 15
HVPS Rear Panel Connectors ........................................................ 15
Interconnection Procedure 16
Connector and Pin Definitions 17
HVPS.............................................................................................. 17
Controller ........................................................................................ 18
5 OPERATION 23
Controller Functions 23
Operation 25
6 PREVENTIVE MAINTENANCE 28
7 MULTI-SOURCE OPERATION 29
Introduction 29
Connector and Pin Definitions 29
Sub-Controller................................................................................. 29
8 ADDENDUM 32

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LIST OF ILLUSTRATIONS
Figure Title Page
4-A HVPS Front Panel (TT-8) ...........................................................12
4-B HVPS Front Panel (TT-10) .........................................................13
4-C Suggested Ground Installation ...................................................15
4-D Power Tetrode in TT-6 ...............................................................16
4-E TT-10/15/20 Tube sitting on Socket ...........................................17
4-F Tube fully inserted in Socket ......................................................17
4-G Anode Connection......................................................................18
4-H HVPS Rear Panel Connectors ...................................................18
4-I Controller Rear Panel Connectors .............................................18
4-J Filament Transformer Connections ............................................20
5-A Controller Front Panel ................................................................26
8-A Connections TT-3.......................................................................37
8-B Connections TT-6/8 –208VAC Version .....................................38
8-C Connections TT-6/8 –400VAC Version .....................................39
8-D Connections TT-10/15 –208VAC Version .................................40
8-E Connections TT-10/15/20 –400VAC Version ............................41
8-F J5 Remote User I/O Connector..................................................42

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1
UNPACKING
Remove the High Voltage Power Supply (HVPS) and Controller from their
crate/carton(s), but do not discard the packing materials; retain the packing
materials and carton in case the unit needs to be returned.
Inspect the unit for dents or other damage, which may have occurred during
shipping. In the unusual event that shipment damage has occurred, contact
the transportation company and Telemark immediately.
The additional material enclosed in the shipping boxes (such as cables etc.)
should be inspected as well. Put them aside and DO NOT proceed until this
instruction manual has been thoroughly reviewed. After completely unpacking
the boxes, you should have the following items: (see also packing list)
1. High Voltage Module
2. Control Module
3. Filament Transformer Box
4. Cable 25pin Sub-D, M-F
5. Cable 9pin Sub-D, M-F
6. HV Coax Cable RG213
7. Filament Power Cable, Hirschmann 3pin, M-F, grey
8. Sweep Power Cable, Hirschmann 2 pin, M-EURO/IEC
9. EMO Connector, Hirschmann 2 pin M
10. HV Cable Set, dual red filament cable, 42" (1m)
11. 15pin Sub-D Connector, M
12. Connector Shell Sub-D 15
13. 37pin Sub-D Connector, M
14. Connector Shell Sub-D 37
15. 2 ea. Strain Relief 3/4" NPT
16. Power Connector Shell, AMP } TT-
17. Cable Clamp for Power Connector, AMP } 3/6/8
18. 5 ea. Crimp Pins for Power Connector, AMP } only

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2
GENERAL DESCRIPTION
The TT series of Electron Beam Source Power Supplies are compatible with
electron beam sources which use electro-magnetic deflection or a
combination of permanent magnet deflection and electro-magnetic focusing.
This High Voltage Power Supply (HVPS) incorporates the latest in fast
response Tetrode Tube high voltage regulation and switching technology.
Each unit is packaged in a single, 19" rack-mountable chassis (TT-3/6/8) or a
stand-alone cabinet on casters (TT-10/15/20) with approximate dimensions
as below. Approximately 2" (50mm) are additionally required behind the rack
mount chassis for connections.
TT-3: W 19" (483mm) x D 22" (560mm) x H 10.5" (267mm) [6U]
TT-6: W 19" (483mm) x D 25" (635mm) x H 14" (356mm) [8U]
TT-8: W 19" (483mm) x D 29" (740mm) x H 15.75" (400mm) [9U]
TT-10/15/20: W 23" (585mm) x D 27.5" (700mm) x H 35" (890mm)
Operation of the HVPS requires connection to its controller unit, which is
housed in a separate 19" chassis 1U high (1.75" or 44,5mm). The Controller
permits operation of the HVPS both locally and remotely, while providing
visual status indications.
The TT-3/6/8 power supplies will operate only one electron beam source at a
time, but multiple supplies may be utilized to operate two or more sources.
The TT-10/15/20 can operate up to three electron beam sources
simultaneously (optional).
A series of system safety interlocks are available to protect both operator and
the equipment.

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3
SPECIFICATIONS
Parameter
TT-3 CE
TT-6 CE
208 VAC
TT-6 CE
400 VAC
TT-8 CE
208 VAC
TT-8 CE
400 VAC
Line Voltage *
208/230VAC
208VAC
400VAC
208VAC
400VAC
Line Frequency
50/60Hz
60Hz
50/60Hz
60Hz
50/60Hz
Line Current
35A
35A
23A
42A
30A
Output Voltage
-5 to -7kV
-6 to -8kV
-6 to -8kV
-6 to -10kV
6- to -10kV
Max Output Ripple
1.5%rms
1.2%rms
1.2%rms
1%rms
1%rms
Voltage Regulation
0.5%
0.3%
0.25%
0.25%
0.25%
Emission Current
500mA
750mA
750mA
800mA
800mA
Filament Current
40A
40A
40A
40A
40A
Parameter
TT-10 CE
208 VAC
TT-10 CE
400 VAC
TT-15 CE
208 VAC
TT-15 CE
400 VAC
TT-20 CE
400 VAC
Line Voltage *
208VAC
400VAC
208VAC
400VAC
400VAC
Line Frequency
60Hz
50/60Hz
60Hz
50/60Hz
50/60Hz
Line Current
60A
35A
73A
42A
50A
Output Voltage
-4 to -10kV
-4 to -10kV
-4 to -10kV
-4 to -10kV
-4 to -12kV
Max Output Ripple
1%rms
1%rms
1%rms
1%rms
1%rms
Voltage Regulation
0.25%
0.25%
0.25%
0.25%
0.25%
Emission Current
1000mA
1000mA
1500mA
1500mA
1700mA
Filament Current
50A
50A
50A
50A
50A
*)Line voltages +/-5% –Other line voltages on request –TT-3 is single phase, all others are 3 phase
Specifications subject to change without notice
NOTE: Above specified line currents are average maximum currents at full load. Current
rating and response curves of circuit breakers (fuses) in the power feed line must allow for
some extra current and time delay to deal with inrush / initial surge currents from the HV
transformer when it is turned on.

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The TT-8/10/15/20 are equipped with a "soft start" feature to eliminate excessive initial surge
currents from their large HV transformers.
It is considered good practice to select slow blow circuit breakers (fuses) with at least one
step up in current rating (e.g. +5A). Line feed cable size must be chosen accordingly.

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4
INSTALLATION
Introduction
The TT-3/6/8 Electron Beam Source Power Supply is designed to be mounted in a standard
19 inch electronic instrument rack. Any suitable place on a vacuum system with a standard
19 inch opening may be used.
The TT-10/15/20 Electron Beam Source Power Supply is designed in a stand-alone cabinet
on casters and can be placed in any free space conveniently close to the vacuum system.
The control module could, for example, be set directly on a system cabinet top for easy
access or be mounted in a 19 inch electronic instrument rack. The installation procedures are
described below.
Figure 4-A HVPS Front Panel (TT-8 shown, with Controller)

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Figure 4-B HVPS Front Panel (TT-10 shown, with Controller and Sweep)
Mechanical
The High Voltage module (HVPS) of the TT-3/6/8 must be placed in a level
19 inch rack or other suitable cabinet that is capable of supporting a minimum of the following
weights.
TT-3: 100 lbs (45 kg)
TT-6: 200 lbs (90 kg)
TT-8: 300 lbs (135 kg)
The HVPS must be secured in the cabinet before electrical connections are made.
System Grounding Practice
A good ground is necessary to assure safe and proper operation of the power supply (see
page 15, #1. and section 7, Figures 8-A through 8-E).
Grounding
Proper grounding is the single most important aspect of the installation of the E-beam. During
arcing events, RF noise is generated that must be properly driven to ground to avoid
interference/damage. For this reason, the E-beam ground must be separate from the
electronics rack ground and ideally as short as possible. Improper grounding can lead to poor
performance, interference with other equipment, damage to E-beam electronics or other
equipment, or even shock potential.
Do not depend on water pipes for the system ground connection. Because of multiple joints
and sealing compounds, water pipes typically do not make an earth ground. Keep in mind this
is a high frequency as well as a DC ground.
Regardless of the method of grounding, the first point of connection for the ground
cable/strap is always the E-beam chamber. There should be a specially designed ground bar
welded to the chamber for this purpose. The strap, if used, should be "sandwiched" between
two bars to ensure a broad area connection.

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Connecting to Building Steel
The best method known for grounding the E-beam is to tie the ground bar to building steel as
close as possible using the appropriate grounding strap (varies based on the distance - see
details below). One must verify that the building steel has a good connection to ground for
this to be a viable solution. Be sure to remove any paint, rust, etc from under the connection
point to the building steel.
Because the connection is for an RF ground, surface area is more important than cross-
sectional area. It is critical to have a wide surface area of connection between the grounding
strap and the building steel.
Distance Between E-Beam Chamber
and Grounding Point
Minimum Recommended Strap/Cable
< 10 Feet « 3 meters)
#6 Gauge or larger gauge copper cable
10-20 Feet (3-6 meters)
#4 Gauge or larger gauge copper cable
20-60 Feet (6-18 meters)
2 inch by .035 inch thick copper strap
> 60 Feet (> 18 meters)
Contact Telemark for recommendations
Table 4-1: Ground Strap Size
When in doubt, always go with the larger ground connection. You can never have too good of
a connection!
Do not use braided wire. Be sure that the connection is made to clean metal.
The power supply is connected to ground using the HV cable’s shield connection. The power
supply may sustain major damage if power is applied before the ground is connected.
High Voltage
Use decals or other warning labels on the high voltage shield, at the front of the E-beam
chamber and on the door to the room to provide warning that lethal voltages are present. Do
not put any part of the body under a chamber while a source is running. Always use a
grounding hook as a matter of habit before touching any potentially high voltage area, even
when power supply is off. Always keep one hand in a pocket. Always maintain a respectful
fear of high voltages: familiarity does not make high voltages safe.
Ground Connections
In addition to the critical building (earth) ground described above, there are 6 other ground
leads that will attached to the ground bar on the E-beam chamber:
1. Source Transformer Box - connected using 6 AWG gauge wire
2. E-beam power supply - connected using 6 AWG wire
3. Safety cover over high voltage feedthrus - connected using 12 AWG gauge wire
4. Sweep controller - connected using 12 AWG gauge wire
5. TT-Controller - connected using 12 AWG gauge wire
6. Sweep cable ground connection - connected using 12 AWG gauge wire
There is not a required order for the above; simply connect each ground lead securely to an
open ground lug location on the ground bar. Ensure connections are secure prior to turning
on the power to the E-beam. Operating without one or more grounds properly connected may
cause damage to equipment or even harm to the operator.

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Figure 4-C Suggested Ground Installation
Interlock Connections
It is extremely important for operator and equipment safety that the external interlocks are
appropriately installed (see page 20 and section 7, Figures 8-A through 8-E).
Symbol Definitions
Protective Conductor Terminal
Indicates where to connect safety ground conductor for
AC line source and system ground.
Caution: Risk of Electric Shock
Indicates that high voltages, capable of causing injury, are present on the
output connector.
Caution: Refer to Manual for Further Instructions
Directs user to manual for further detailed instructions on installation and
operation.
CAUTION!!!
The instrument rack (for TT-3/6/8) must not block air passages located on the unit’s front and
rear panels. Fans in the lower center of the rear panel pull in air for the power tube and fans
in the upper corners extract air from the unit. Allow for ample clearance for adequate air flow.
The rear of the instrument rack in the area of the HVPS MUST NOT be closed in order not to
obstruct air flow to/from the fans.
The HVPS cabinet (TT-10/15/20) must be placed in such a way that neither the air intake at
the front panel, nor the air intakes and exhausts by the fans on the rear panel are obstructed.
Ample clearance (at least 20 inches or 500mm) must be kept from both front and rear panel.
Power Tube Installation
The TT-3 and TT-6 are equipped with an indirectly heated oxide cathode power tetrode that
can be left in the power supply during shipping.
Sweep
Power Supply
Power Supply
Controller
Filament
Transformer

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These power supplies do have the tube already properly installed.
Figure 4-D Power Tetrode installed in TT-6
The TT-8/10/15/20 are equipped with a directly heated power beam tetrode that requires
separate shipping in a dedicated container to avoid damage.
These tubes need to be installed in the power supply prior to installation and start-up of the
HVPS.
Open the top cover of the HVPS chassis (TT-10/15/20 requires disconnecting of the ground
wire to the top cover). Locate the tube socket (concentric silver plated contact rings in a grey
air guiding chimney).
Carefully remove the power tetrode from its shipping container and its protective bag. Set it
loosely into the socket from top, straight and centered. The tube for the TT-8 now sits with
about ½" (12mm) clearance from the heat sink to the air chimney, whereas the tubes for the
TT-10/15/20 come with two marking lines. The lower line indicates the position in the chimney
when loosely sitting on top of the socket, the upper one the fully inserted position.
Figure 4-E TT-10/15/20 Tube sitting loosely on Socket
Insert the tube into its socket by firmly pushing it down straight and level until feeling a solid
stop. This may require some force and a slight wiggle. Do not twist! Check for the proper
position of the tube to make sure it is fully engaged in the socket.

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Figure 4-F
Tube fully
inserted into Socket, left TT-10/15/20, right TT-8 (~ ¼" or 6mm gap)
Proper seating of the tube in its socket is essential for good current transfer for the heater
filament (75A for TT-8, 160A for TT-10/15/20 !!!), preventing the socket contact rings from
overheating and eventually burning out.
Make the anode connection with the red high voltage wire by attaching the contact clip to the
anode hub on top of the tube's heat sink.
Figure 4-G Anode Connection clipped to
power tube, left TT-10/15/20, right TT-8
This completes the installation of the power tetrode.
Close the top cover of the HVPS (do not forget to put back the ground connection to the top
cover in the TT-10/15/20).
Input Voltage Selection
Before the HVPS may be installed, it is critical that the input AC line voltage being supplied to
it conforms to the marking on the serial number label on the rear panel (see Figure 4-G). No
neutral connection is required for 208VAC units. The HVPS is not sensitive to phase rotation.
Double check your power line wiring configuration before proceeding with the installation.
HVPS Rear Panel Connectors

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Figure 4-H HVPS Rear Panel Connectors (TT-6 shown)
Interconnection Procedure
Figure 4-I Controller Rear Panel Connectors
1. Turn OFF all front panel circuit breakers.
2. Connect the ground stud on the rear panel of the HVPS chassis to a common ground on
the vacuum system. Use a 0.5 inch or 10mm wide metal earthling braid or #10 AWG /
6mm² insulated stranded wire with properly crimped ring terminals where required.
Heavier gauge conductors may be used. This vacuum system ground must be the
common point of all ground connections. Run grounding connections from here to the
Controller and Filament Transformer Box as well. In rack mount systems run the
grounding for the Controller the short way directly to the HVPS ground stud.
If no common grounding point is available on the vacuum system, the ground stud of the
HVPS may be used as common ground instead.
See section 7, Figures 7-A through 7-E.
3. Connect the supplied HV Output cable (RG213 Coax) between J5
HV OUT on the HVPS and the mating connector on the supplied Filament Transformer
Box. It is good practice to keep the HV cable away from sharp objects, machinery, and
high traffic areas. This will minimize the possibility of damage to the cable.
4. Connect the supplied Hirschmann cable between J3 FIL(AMENT) XFMR on the HVPS
and the mating connector on the Filament Transformer Box.
5. If desired, connect an external EMO (Emergency Off) switch with the supplied 2-pin
Hirschmann connector to J7 EXT EMO on the HVPS (not available on TT-3/6). Jumper
JP1 on the HVPS main board must be set to OFF (2-3) for activation of the external EMO
(contact Telemark Service for details)
6. Connect the supplied 25pin Sub-D M-F cable between J1 HV CONTROL on the HVPS
and J1 on the Controller.
7. Connect the supplied 9pin Sub-D M-F cable between J2 SOURCE CTRL on the HVPS
and J2 on the Controller.
8. TT-3/6/8:
With input AC line voltage OFF, terminate the AC line feed wires to the supplied terminals
(P/N 124-1440-1), connector shell (P/N 124-1441-1), and cable clamp (P/N 124-1442-1).
It is mandatory to use 600V insulated stranded wire of sufficient gauge (min. #12AWG /

Telemark TT Cheetah Series Power Supply Instruction Manual
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4mm² for 208VAC,
min. #14AWG / 2.5mm² for 400VAC). Strip about 0.4 inch (~10mm) of insulation from the
wires before crimping them to the terminals.
Connect the completed connector assembly to J6 POWER IN on the HVPS.
TT-10/15/20: With input AC line voltage OFF, terminate the AC line feed wires with
ferrules. It is mandatory to use 600V insulated stranded wire of sufficient gauge (min.
#10AWG / 6mm² for 208VAC, min. #12AWG / 4mm² for 400VAC; except for TT-15
208VAC: min. #8AWG / 10mm²).
Strip about 0.4 inch (~10mm) of insulation from the wires before crimping them to the
ferrules. Connect the completed cable to the terminal block at the rear of the HVPS
cabinet and tighten the strain relief.
9. Connect the safety interlocks to J7 INTERLOCKS of the controller as described on page
20 and in section 6, Figures 6-A through 6-E.
10. Install the two supplied ¾" NPT flexible Strain Relieves 110-0052-4 in the openings of the
Filament Transformer Box, run the supplied red HV Cable Set 122-0031-1 through them,
connect the ring lugs to the output bolts of the Filament Transformer (see Figure 4-J),
and connect the shields to the internal GND bolt. Keep the shield wires away from the
HV.
The other ends need to be custom configured to connect to the High Voltage
Feedthroughs for the E-Beam Source. Make sure to strip back the shield by at least 2"
(50mm) and keep it away from the hot conductor.
11. When all connections have been double checked, apply AC power from the AC line input
and turn both rear panel circuit breakers ON. The unit is now ready for operation.
Figure 4-J Filament Transformer Connections
Connector and Pin Definitions
HVPS
J1 –HV CONTROL >>> connects to J1 of Controller
J2 –SOURCE CTRL >>> connects to J2 of Controller
J3 –FIL(AMENT) XFMR >>> connects to Filament Transformer Box
J4 –SWEEP POWER >>> connects to Analog Sweep (see separate Manual)
J5 –HV OUT >>> connects to Filament Transformer Box
J6 –POWER IN –AC Line Input TT-3/6/8 (Amphenol 7-pin F-series circular)

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Pin#
Name
Description
1
Phase 1
AC Phase 1
3
GND / PE
AC GND / PE
4
Neutral
AC Neutral, on 400VAC units only
5
Phase 2
AC Phase 2
6
Phase 3
AC Phase 3
AC Line Input TT-10/15/20 (Terminal Block, pin count from left)
#
Name
Description
1
P1
AC Phase 1
2
P2
AC Phase 2
3
P3
AC Phase 3
4
GND
AC GND / PE
5
N
AC Neutral, on 400VAC units only
J7 –EXT EMO –not on TT-3/6 (Hirschmann 2-pin rectangular)
Pin#
Name
Description
1
External EMO
Interlock
Contact closure to pin 2 to enable HVPS,
open will disable HVPS
2
External EMO
Interlock
Contact closure to pin 1 to enable HVPS,
open will disable HVPS
Controller
J1 –HVPS –HV CONTROL >>> from J1 of HVPS
J2 –HVPS –SOURCE CTRL >>> from J2 of HVPS
J3/J4 –SUB CONTROL #2/#3 >>> to J3/J4 of Sub Controller (see section 6)
J5 –REMOTE USER I/O (37pin Sub-D M)
Pin
#
Name
Input/
Output/
Power
Signal
Range
Function Description
1
User +24VDC
Power
+24VDC
Source for user +24VDC control
(200mA max output)
2
HV Ready/OFF
Indicator
Output
(O.C.)*
0 to +Vcc
Low = HV ready/off
High = HV not ready
3
Arc Indicator
Output
(O.C.)*
0 to +Vcc
Low = HV arcing/not regulating
High = HV regulating
4
Air/Timer Indicator
Output
(O.C.)*
0 to +Vcc
Low = Air Flow not OK
Low/High pulsing = Time Delay
High = Air Flow / Time Delay OK

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19
5
HV ON Indicator
Output
(O.C.)*
0 to +Vcc
Low = HV is on
High = HV is off
6
Source ON Indicator
Output
(O.C.)*
0 to +Vcc
Low = Source is on
High = Source is off
7
Voltage Reference
Select
Input
Jumper only,
do not apply
voltage
Open = always front panel pot
GND = kV reference selected by
Control Select switch
8
Digital GND
(GND)
Power
Reference for pins 1, 7, 12, 14,
15, 30, 32, 33, 34
9
HV ON Control
Input
0 to +24VDC
+5VDC to +24VDC = HV ON
0VDC = HV OFF
10
Source ON Control
Input
0 to +24VDC
+5VDC to +24VDC = Source ON
0VDC = Source OFF
11
Unused
12
F.P. ON in Remote
Input
Jumper only,
do not apply
voltage
Open = ON signals from PLC
GND = F.P. ON switches are
active in remote mode
13
Digital GND
(GND)
Power
Reference for pins 1, 7, 12, 14,
15, 30, 32, 33, 34
14
Remote Voltage
Reference
Input
0 to +10VDC
0 to +10VDC = 0 to -10kV
0 to +8VDC = 0 to -8kV (TT-6)
0 to +7VDC = 0 to -7kV (TT-3)
15
Remote Emission
Current Reference
Input
0 to +10VDC
0 to +10VDC = 0 to 100% current
(500 / 750 / 800 / 1000 / 1500 / 1700 mA)
16
Isolated GND
(GND_ISO)
Power
Reference for pins 2 thru 6, 9,
10, 24, 31 (isolated from GND)
17
Isolated GND
(GND_ISO)
Power
Reference for pins 2 thru 6, 9,
10, 24, 31 (isolated from GND)
18
Digital GND
(GND)
Power
Reference for pins 1, 7, 12, 14,
15, 30, 32, 33, 34
19
Digital GND
(GND)
Power
Reference for pins 1, 7, 12, 14,
15, 30, 32, 33, 34
J5 –REMOTE USER I/O (continued)
Pin#
Name
Input/
Output/
Power
Signal
Range
Function Description

Telemark TT Cheetah Series Power Supply Instruction Manual
20
20
Unused
21
Unused
22
Unused
23
Unused
24
All Interlocks OK
Indicator
Output
(O.C.)*
0 to +Vcc
Low = All Interlocks satisfied
High = Not all Interlocks satisfied
25
Unused
26
Source Ready/OFF
Indicator
Output
(O.C.)*
0 to +Vcc
Low = Source is ready/off
High = Source is not off
27
Unused
28
Unused
29
User +10VDC
(Emission)
Power
+10VDC
Source (if used) for remote
Emission reference input
(2mA maximum output)
30
User +10VDC (kV)
Power
+10VDC
Source (if used) for remote
kV reference input
(2mA maximum output)
31
+Vcc
Input
+5 to
+24VDC
External user isolated digital
control power (clamping)
32
Voltage Monitor
Output
0 to +10VDC
0 to +10VDC = 0 to -10kV
0 to +8VDC = 0 to -8kV (TT-6)
0 to +7VDC = 0 to -7kV (TT-3)
33
Emission Current
Monitor
Output
0 to +10VDC
0 to +10VDC = 0 to 100% current
(500 / 750 / 800 / 1000 / 1500 / 1700 mA)
34
Filament Current
Monitor
Output
0 to +10VDC
0 to +5VDC = 0 to 50A
35
Isolated GND
(GND_ISO)
Power
Reference for pins 2 thru 6, 9,
10, 24, 31 (isolated from GND)
36
Digital GND
(GND)
Power
Reference for pins 1, 7, 12, 14,
15, 30, 32, 33, 34
37
Digital GND
(GND)
Power
Reference for pins 1, 7, 12, 14,
15, 30, 32, 33, 34
*) O.C. denotes Open Collector
Note 1: Open Collector outputs require external pull-up resistors. When connecting “User
+24VDC” to pull-up resistors, their resistance value must not be lower than 2kOhm.