Bruker BLAH500 E Instruction and safety manual

NMR Spectroscopy
Bruker BioSpin
think forward
Version
BLAH500 E
Amplifier 700900MHz INR
Operating & Service Manual
002

The information in this manual may be altered without notice.
BRUKER BIOSPIN accepts no responsibility for actions taken as a result of use of
this manual. BRUKER BIOSPIN accepts no liability for any mistakes contained in
the manual, leading to coincidental damage, whether during installation or
operation of the instrument. Unauthorised reproduction of manual contents,
without written permission from the publishers, or translation into an other
language, either the entire manual or a part of it, is forbidden.
This manual describes the units as they are at the date of printing. On request, the
manufacturer shall supply circuit diagrams, lists of components, descriptions,
calibrating instructions and any other information for use by qualified personnel of
the user, in charge of repairing the parts of the unit which have been stated by the
manufacturer to be "repairable". Such supply shall in no event constitute
permission to modify or repair the units or approval of the same.
All rights reserved for the units, circuits, processes and appellations mentioned
herein.
This unit is not designed for any type of use which is not specifically described in
this manual. Such use may be hazardous.
For further technical assistance on the BLAH500 E unit, please
do not hesitate to contact your nearest BRUKER dealer or
contact us directly at:
BRUKER BioSpin
34 rue de l’Industrie
F-67166 Wissembourg Cedex
France
Phone: + 33 388 066 000
Fax: + 33 388 736 820
Email: [e-mail]
Internet: www.bruker.com
This manual was written by
This manual was edited and desktop published by
© September 24, 2009: Bruker BioSpin
Wissembourg, France
Bernard Geissert
Dominique Wurtz
P/N: Z31838
DWG-Nr: Z4D10552A

Operating & Service Manual Version 002 BRUKER BIOSPIN 3 (51)
Contents
Contents ............................................................................ 3
1 General Information ........................................................... 5
1.1 Introduction ........................................................................................ 5
2 Safety .................................................................................. 7
2.1 Identification Labels ............................................................................ 7
Identifying Plate ............................................................................. 7
Manufacturer’s Name Plate ............................................................ 8
2.2 Safety Labels and Symbols ................................................................. 9
Warning Signs ............................................................................... 9
Danger ...................................................................................... 9
Instruction ................................................................................. 9
3 Installation .........................................................................11
3.1 Initial Inspection ............................................................................... 11
Mechanical Check ........................................................................ 11
Claim for Damage ........................................................................ 11
Reshipment and Repackaging Requirements ............................... 11
Environment Requirements .......................................................... 12
3.2 Installation Requirements ................................................................. 12
Bench Operation .......................................................................... 12
3.3 Power Requirements ........................................................................ 12
3.4 System Check .................................................................................. 12
3.5 Initial Turn on Procedure .................................................................. 13
4 Operation .......................................................................... 15
4.1 Front Panel Description .................................................................... 15
Indicators ..................................................................................... 15
Coaxial Connectors ...................................................................... 16
Ethernet 10/100 Interface Connector ............................................ 16
Device Front View ........................................................................ 17
4.2 Rear Panel Description ..................................................................... 18
Device Rear View ........................................................................ 18
5 Technical Description ...................................................... 19
5.1 System Overview .............................................................................. 19
5.2 Theory of Operation .......................................................................... 23
RF Path ....................................................................................... 23
Embedded Router ................................................................... 23
RF Driver ................................................................................ 23
RF Relay H500/H50 Selection ................................................. 24

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Contents
RF Coupler H50 ...................................................................... 24
RF Power Amplifier ................................................................. 24
RF Coupler H500 .................................................................... 24
Circulator ................................................................................ 24
BLA Control Board ....................................................................... 25
BLA Extension Board ................................................................... 27
Status Led Board ......................................................................... 27
BIS Board .................................................................................... 27
6 Servicing the BLA .............................................................29
6.1 Accessing the BLA Amplifier ............................................................. 29
6.2 Sub Toolbar Information ................................................................... 30
Device Information (default) ......................................................... 30
Amplifier Status ........................................................................... 31
6.3 Sub Toolbar Advanced Operations ................................................... 32
Device Information (advanced) .................................................... 32
Amplifier Limitations .................................................................... 33
Change Limits ............................................................................. 34
Routing Information and Setting ................................................... 35
6.4 Sub Toolbar Maintenance ................................................................. 36
Device Information (maintenance) ............................................... 36
Self-Test & Software Reset .......................................................... 37
Firmware Update ......................................................................... 39
BIS Content ................................................................................. 40
7 Specifications ...................................................................41
7.1 Common Characteristics .................................................................. 41
7.2 General Specifications ..................................................................... 42
Channel High Resolution 50W Output .......................................... 42
Channel Solid 500W Output ......................................................... 43
8 Service Information and Maintenance ..............................45
8.1 Preventive Maintenance of the RF Module on BLA-Type Amplifiers .. 45
Operation .................................................................................... 45
Figures ............................................................................. 47
Tables ............................................................................... 49

Operating & Service Manual Version 002 BRUKER BIOSPIN 5 (51)
1
General
Information 1
Introduction 1.1
The BLAH500 E Amplifier 700-900MHz INR is a broadband linear pulse power
amplifier specifically designed for Nuclear Magnetic Resonance (NMR)
application for 16,4 to 21,1 Teslas Systems. It is commercialized under the
BRUKER BIOSPIN part number W1345505.
It is operated in AB linear class and provides 500W and more peak RF power over
the frequency range 650-900MHz on the H500 output for the Solid applications
and 50W and more peak RF power on the H50 output for the High Resolution
applications.
The amplifier is equipped with N-Channel RF LDMOSFETs transistors of the
latest generation. The unit can provide full power for any combination of pulse
width and duty cycle up to 100ms and 20% in High Resolution mode and 10% in
Solid mode.
Its built-in protection circuitry will allow lower power pulses for longer pulse widths
and duty-cycles, maintaining a 50W average power for the Solid application on
the H500 output and 10W average power for the High Resolution application on
the H50 output.
The electronic protection circuitry has been designed to protect against:
•Excessive power output level (overdrive)
•Excessive pulse repetition rate (over duty-cycle protection)
•Excessive pulse duration (over pulse-width)
•More than 50% reflected RF power (mismatch when VSWR ≥6)
•Thermal protection (overheat)
The amplifier is powered by an internal switched power supply assembly that
provides the +32VDC for the power amplifiers, in addition to all low level voltages
for the system.
The supply is self protected for overcurrent and overvoltage.
The entire unit is housed in a 19", 3U, 520mm rack cabinet.

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General Information

Operating & Service Manual Version 002 BRUKER BIOSPIN 7 (51)
2
Safety 2
The BLAH500 E Amplifier 700-900MHz is in accordance with the standard
61010-1 and with the UL 61010-1 / CSA C22.2 No.61010-1-04 Safety
Requirements for Electrical Equipments.
Identification Labels 2.1
Labels are provided to alert operating and service personnel to conditions that
may cause personal injury or damage to the equipment from misuse or abuse.
Please read the labels and understand their meaning.
Identifying Plate 2.1.1
The BLAH500 E Amplifier 700-900MHz can be identified by an identifying plate at
the front panel of the unit that contains the following information :
Figure 2.1. Identifying Plate
•(A) Part Number
This field indicates the part number of the product.
•(B) Variant
This field indicates the variant number that identifies the production category of
the product. The default variant is 00.
•(C) ECL
This field indicates the revision number that identifies the product
configuration. The initial revision is 0.00.
•(D) Serial Number
This field indicates the serial number of the product.
•(E) Type
This field contains the designation of the product.
•(F) Information
This field contains additional information about the product.
A///BC D
E
F

8 (51) BRUKER BIOSPIN Operating & Service Manual Version 002
Safety
Manufacturer’s Name Plate 2.1.2
The BLAH500 E Amplifier 700-900MHz can be identified by a manufacturer’s
name plate at the back panel of the unit that contains the following information :
Figure 2.2. Manufacturer’s Name Plate
•(A) Voltage
This field indicates the input mains voltage of the product.
•(B) Frequency
This field indicates the input mains frequency of the product.
•(C) Phases
This field indicates the number of phases of the mains.
•(D) Power
This field indicates the absorbed power of the product.
•(E) Current
This field indicates the absorbed current of the product.
•(F) Wires
This field indicates number of wires with the ground in the mains cord.
•(G) Part Number
This field indicates the assembly number that identifies the part number of the
product.
Hz
Made in France
VAC
Wires +
A B C Phase
FD KVA Gnd
EAmps
P/N : G

Operating & Service Manual Version 002 BRUKER BIOSPIN 9 (51)
Safety Labels and Symbols
Safety Labels and Symbols 2.2
Warning Signs 2.2.1
Danger
Instruction
Operating personal should not remove RF output cable without turn off the power
supply because the RF output can cause serious burns before the "Mismatch"
protection is active.
Please disconnect the mains supply before opening to prevent potential hazard
such as :
•Electrical shock from power supply
•Contact burns from the RF module and heatsink
•Finger scratch due to the fan assembly on the RF module.
DANGER! Risk of electrical shocks
Throughout this manual, this symbol indicates the possibility of
severe personal injury, loss of life or equipment damage if the
instructions are not followed.
On the equipment, the symbol also implies a danger and alerts the
user.

10 (51) BRUKER BIOSPIN Operating & Service Manual Version 002
Safety

Operating & Service Manual Version 002 BRUKER BIOSPIN 11 (51)
3
Installation 3
The installation of the device must be done only by an authorized and qualified
technician, in total accordance with the running standards.
BRUKER BIOSPIN assumes no liability for the customer’s failure to comply with
these requirements and is therefore not responsible or liable for any injury or
damage that occurs as a consequence of non-approved installation.
Initial Inspection 3.1
Mechanical Check 3.1.1
If damage of the shipping cardboard is evident, request the carrier's agent to be
present when the instrument is unpacked. Check the equipment for damage and
inspect the cabinet and panel surfaces for dents and scratches.
Claim for Damage 3.1.2
If the unit is mechanically damaged or fails to meet specifications upon receipt,
notify BRUKER or our representative immediately. Retain the shipping cardboard
and packing material for the carriers inspection as well as for subsequent use in
returning the unit if necessary.
Reshipment and Repackaging Requirements 3.1.3
Whenever possible, the original cardboard and packing material should be used
for reshipment. If the original packing material is not available, wrap the
instrument in heavy paper or plastic. Use a strong shipping container. If cardboard
is used, it should be at least 200 lbs. test material.
Use shock absorbing material around all sides of the instrument to provide a firm
cushion and to prevent movement from inside the container wall on each side.
Protect the front panel by means of cardboard spacers inserted between the front
panel and the shipping cardboard. Make sure that the instrument cannot move in
the container during shipping. Seal the cardboard box with a good grade of
shipping tape and mark the container :
"FRAGILE ELECTRONIC INSTRUMENT"

12 (51) BRUKER BIOSPIN Operating & Service Manual Version 002
Installation
Environment Requirements 3.1.4
This amplifier is built for inside use only on a maximum elevation of 2000m above
sea level (6600 feet).
No specific cooling or ventilation is required.
Be sure that the amplifier has enough area around it so that the free airs flow into
and out of the amplifier is not obstructed.
It should, however, be in an environment which conforms to the 5°C - 45°C (41°F
- 113°F) thermal specifications, a 80% maximum relative humidity of air and a
contamination level of two (means a normal non-conductive contamination,
temporary conductivity due to condensation is possible).
Installation Requirements 3.2
No special precautions are necessary. Mount the equipment in an area which is
relatively free of vibration, and has sufficient room for cable connections.
The amplifier has a class II installation category.
Bench Operation 3.2.1
The unit can be placed onto a secure flat surface.
Power Requirements 3.3
The BLAH500 E Amplifier 700-900MHz has a built-in switched power supply.
The mains line connector on the rear panel is a CEI 10A.
One Phase Line requirements :
AC input voltage : 208-230VAC
Input current max : 3,4A
Frequency : 50/60Hz
System Check 3.4
Before applying power for the first time the following items should be checked:
•The AC input voltage 208-230 VAC ± 10% range must be compatible with the
power supply.
•An external blanking (gating) pulse must be supplied to the amplifier in order
for the unit to function. Ensure that this pulse has a proper level and logic
polarity.
•The BLAH500 E Amplifier 700-900MHz has a nominal input level of +4dBm.
Ensure that the system drivers are operating at these levels.
•Output RF loads are connected.

Operating & Service Manual Version 002 BRUKER BIOSPIN 13 (51)
Initial Turn on Procedure
Initial Turn on Procedure 3.5
The following list describes how to turn on the BLAH500 E Amplifier 700-900MHz
and what should be seen as this occurs.
Before starting this procedure, make sure that you have properly followed the
instructions in section "System Check" on page 12.
1. Connect the amplifier to the AC line and turn the line switch to ON.
2. Observe the indicators on the front panel of the amplifier :
- The +32V ON LED's will illuminate,
- The +15V, -15V and +3,3V ON LED's will illuminate.
3. System is now fully operational.

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Installation

Operating & Service Manual Version 002 BRUKER BIOSPIN 15 (51)
4
Operation 4
Front Panel Description 4.1
The BLAH500 E Amplifier 700-900MHz front panel is provided with 12 indicators
for status monitoring, 7 RF connectors, 1 interface connector and 1 line switch.
Indicators 4.1.1
Normal operation is indicated when following LED's are ON.
Table 4.1. Indicators Assignment
+32V Indicates that the +32V supply is applied.
+15V Indicates that the +15V supply is applied.
-15V Indicates that the -15V supply is applied.
+3,3V Indicates that the +3,3V supply is applied.
Overdrive Indicates when the peak power limit has been reached.
Duty Cycle (D.C.) Indicates when the duty cycle limit has been reached.
Pulse Width (P.W.) Indicates when the pulse width limit has been reached.
Mismatch Indicates when the max. reflected power limit has been reached.
RF POW. FLT Indicates when one of the above limits has been reached.
Overheat Indicates that the thermistor located on the RF module heatsink has sensed
excessive heatsink temperature. The amplifier is blanked until an accepable
temperature is reached. The function is self-resetting and no maintenance is
needed.
Indicates also that a fan on the assembly stops turning. The amplifier is
blanked until fans are changed.
H500 ON Indicates when the RF Power is present on the Solid output.
H50 ON Indicates when the RF Power is present on the High Resolution output.

16 (51) BRUKER BIOSPIN Operating & Service Manual Version 002
Operation
Coaxial Connectors 4.1.2
Table 4.2. Coaxial Connectors Assignment
Ethernet 10/100 Interface Connector 4.1.3
The RJ45 connector for the Ethernet 10/100 Mbps link is mounted directly on the
BLA Control Board.
Table 4.3. RJ45 Pin Assignment
IN1, IN2, IN3 RF input of the embedded router, SMA type connector (female).
Defaults entry is IN1 and allows to the BLAH500 E to deliver full power at
nominal +4dBm drive.
H500 RF OUT H500 (Solid output), N type connector (female).
H50 RF OUT H50 (High Resolution output), N type connector (female).
BLNK Blanking input, BNC type connector (female).
TTL logic, 5V = blanking ON, 0V = blanking OFF.
When BLANKING signal is at TTL level high (+5V), no gating is applied to the
amplifier stages, and no RF Power is possible.
When BLANKING signal is at TTL level low (0V), the amplifier stages are gated
and RF Power is possible.
SEL H500/H50 Select input, BNC type connector (female).
When the SEL H500/H50 signal is at TTL level low (0V), the Solid output H500
is selected.
When the SEL H500/H50 signal is at TTL level high (+5V), the High Resolution
output H50 is selected.
Pin 1 Transmit + (Tx+)
Pin 2 Transmit - (Tx-)
Pin 3 Receive + (Rx+)
Pin 4 N/A
Pin 5 N/A
Pin 6 Receive - (Rx-)
Pin 7 N/A
Pin 8 N/A

Operating & Service Manual Version 002 BRUKER BIOSPIN 17 (51)
Front Panel Description
Device Front View 4.1.4
Figure 4.1. BLAH500 E Amplifier 700-900MHz Front Panel Design
Figure 4.2. BLAH500 E Amplifier 700-900MHz Front Panel View
1
O
TxRx
18
BLAH500 E 700-900MHz
H500 ON
+32V
+15V
-15V
+3.3V
RF POW. FLT
OVERHEAT
OVERDRIVE
D. C.
P. W.
MISMATCH
H50 ON
IN 1
ETH. 10/100
BLNK LINE
IN 2
IN 3
Sel H500/H50
H 50 H 500

18 (51) BRUKER BIOSPIN Operating & Service Manual Version 002
Operation
Rear Panel Description 4.2
The BLAH500 E Amplifier 700-900MHz rear panel is free of elements in exception
of the 3 poles (2P+E) line filter socket.
Device Rear View 4.2.1
Figure 4.3. BLAH500 E Amplifier 700-900MHz Rear Panel Design
Figure 4.4. BLAH500 E Amplifier 700-900MHz Rear Panel View

Operating & Service Manual Version 002 BRUKER BIOSPIN 19 (51)
5
Technical
Description 5
System Overview 5.1
The BLAH500 E Amplifier 700-900MHz provides :
•A RF Output of 500W and more on the Solid Output H500, over the full
frequency range 650 to 900MHz, when selected for Solid operation with
SEL H500/H50 command controlled at TTL level low.
•A RF Output of 50W and more on the High Resolution Output H50, over the
full frequency range 650 to 900MHz, when selected for High Resolution
operation with SEL H500/H50 command controlled at TTL level High.
The RF section of the system consists of an embedded router fixed on the front
panel and a linear module BLMH500/H50-E mounted around a single self-
contained Push fan assembly heatsink.
The embedded router has three RF inputs and one RF output feeded to the driver
amplifier located on the BLMH500/50-E module.
A linear class A / AB driver using switches and bias voltage gatings, delivers the
RF input power to the Power Amplifier. This driver is located on the top of the
heatsink assembly.
The class AB power amplifier is located on the bottom of the heatsink assembly.
The output of the power amplifier is connected to a bi-directional high dynamic
coupler mounted on the front panel of the amplifier. This output will be the Solid
H500 output when the amplifier is controlled for Solid applications.
When controlled for High Resolution applications, the output of the driver is
switched to the front panel H50 output via a RF relay and a bi-directional high
dynamic coupler.
The entire system is controlled by a Digital Signal Processing control board,
processing information from the amplifier and blanking signal, providing protection
from excessive peak power, duty cycle and pulse width for average power,
maximum reflected power and heatsink over-temperature.
The DSP control board reads the indentification information of the amplifier (BIS).
Monitoring of fan status, supply status and LED's status is also performed by the
control board.
Circuits such as BLAC6 Extension Board 1 Channel and Status LED's board,
complete the amplifier assembly.

20 (51) BRUKER BIOSPIN Operating & Service Manual Version 002
Technical Description
Figure 5.1. BLAH500 E Amplifier 700-900MHz System Block Diagram
IN 1 IN 2 IN 3
GND
L N
Line
Filter
Switched
Power Supply
Assemblies
ON/OFF
Circuit Breaker
E
POWER SUPPLY
+3,3V -15V +15V +32V
Front
panel
indicators
BIS
Board
BLA-DSP Control Board
BLNK
(Gating)
Supply
+15V
-15V
+3,3V
Status
Driver & Relay Switch
A1
Power Amplifier
A1
Gating &
Detection
+32V
+32V
Gating
Fan Status
Temperature
Heatsink
Reflected
Forward
Reflected
Forward
H50 OUT H500 OUT
High
Resolution
10/100
Ethernet
& BIS
Routing Selection
Sel H500/H50
Bi-directional
High dynamic
Coupler
+15V -15V
Bi-directional
High dynamic
Coupler
+15V -15V
SEL H500/H50
Solid
Sel H500/H50
Circulator
Circulator
+15V
Router