BLAXH2H300/100/150 E Amplifier 200

BLAXH2H300/100/150 E Amplifier 200
Bruker BioSpin
BLAXH2H300/100/150 E
Amplifier 200600MHz INR
Operating & Service Manual
Version 003
think forward
NMR Spectroscopy
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.
This manual was written by
Bernard Geissert
This manual was edited and desktop published by
Dominique Wurtz
© November 2, 2011: Bruker BioSpin
Wissembourg, France
P/N: Z31797
DWG-Nr: Z4D10071B
For further technical assistance on the BLAXH2H300/100/150 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:
Fax:
Email:
Internet:
+ 33 388 066 000
+ 33 388 736 820
support-rmn@bruker.fr
www.bruker.com
Contents
Contents ............................................................................ 3
1
1.1
2
2.1
2.2
3
3.1
3.2
3.3
3.4
3.5
4
4.1
4.2
5
5.1
5.2
General Information ........................................................... 5
Introduction ........................................................................................ 5
Safety .................................................................................. 7
Identification Labels ............................................................................ 7
Identifying Plate ............................................................................. 7
Manufacturer’s Name Plate ............................................................ 8
Safety Labels and Symbols ................................................................. 9
Warning Signs ............................................................................... 9
Danger ...................................................................................... 9
Instruction ................................................................................. 9
Installation ......................................................................... 11
Initial Inspection ...............................................................................
Mechanical Check ........................................................................
Claim for Damage ........................................................................
Reshipment and Repackaging Requirements ...............................
Environment Requirements ..........................................................
Installation Requirements .................................................................
Bench Operation ..........................................................................
Power Requirements ........................................................................
System Check ..................................................................................
Initial Turn on Procedure ..................................................................
11
11
11
11
12
12
12
12
12
13
Operation .......................................................................... 15
Front Panel Description ....................................................................
Indicators .....................................................................................
Coaxial Connectors ......................................................................
Ethernet 10/100 Interface Connector ............................................
Accessory Connector ...................................................................
Device Front View ........................................................................
Rear Panel Description .....................................................................
Device Rear View ........................................................................
15
15
16
16
17
17
18
18
Technical Description ...................................................... 19
System Overview ..............................................................................
Theory of Operation ..........................................................................
RF Path .......................................................................................
Embedded Input Router ...........................................................
RF Power amplifier Channel X300 ...........................................
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22
22
22
22
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Contents
RF Power Amplifier Channel H100 ..........................................
RF Power Amplifier Channel 2H150 ........................................
2H RF Power Switch ...............................................................
RF Coupler H and X ................................................................
BLA Control Board .......................................................................
2H-E Supervisor Board ................................................................
BLA Extension Board ...................................................................
Status Led Board .........................................................................
BIS Board ....................................................................................
6
6.1
6.2
6.3
6.4
7
7.1
7.2
8
8.1
23
23
23
23
24
26
26
26
26
Servicing the BLA .............................................................27
Accessing the BLA Amplifier .............................................................
Sub Toolbar Information ...................................................................
Device Information (default) .........................................................
Amplifier Status ...........................................................................
Sub Toolbar Advanced Operations ...................................................
Device Information (advanced) ....................................................
Amplifier Limitations ....................................................................
Change Limits .............................................................................
Routing Information and Setting ...................................................
Sub Toolbar Maintenance .................................................................
Device Information (maintenance) ...............................................
Self-Test & Software Reset ..........................................................
Firmware Update .........................................................................
BIS Content .................................................................................
27
28
28
29
30
30
31
32
33
34
34
35
37
38
Specifications ...................................................................39
Common Characteristics ..................................................................
General Specifications .....................................................................
Channel X 300W Output ..............................................................
Channel H 100W Output ..............................................................
Channel 2H 150W Output ............................................................
39
40
40
41
42
Service Information and Maintenance ..............................43
Preventive Maintenance of the RF Module on BLA-Type Amplifiers .. 43
Operation .................................................................................... 43
Figures ............................................................................. 45
Tables ............................................................................... 47
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BRUKER BIOSPIN
Operating & Service Manual Version 003
General
Information
1
Introduction
1
1.1
The BLAXH2H300/100/150 E is a linear broadband pulse power amplifier
specifically designed for Nuclear Magnetic Resonance (NMR) applications for 4.7
to 14 Teslas Systems. It is commercialized under the BRUKER part number
W1345096.
Operating linear class AB, it provides 300W peak power output over the
frequency range 6-365MHz on the X channel output, 140W peak power output
over the frequency range 220 to 564MHz (100W for 180 to 220MHz and at
600MHz) on the H channel output and 150W peak power output over the
frequency range 30-92MHz on the 2H channel output.
The amplifier is realized by employing N-CHANNEL MOS BROADBAND RF
POWER FETs of the latest generation. The unit can provide full power for any
combination of pulse width / duty cycle up to 100ms / 25% for the H100 channel,
100ms / 10% for the X300 channel and 5ms / 10% for 2H150 channel.
Its built-in protection circuitry will allow lower power pulses for longer pulse widths
and duty cycles, maintaining a 30W X channel, a 35W H channel and a 15W 2H
channel average power.
An 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 ≥ 6)
Thermal overload (overheat).
The 2H channel is not protected against reflected RF power and excessive
power output level.
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 protecting for overcurrent and overvoltage.
The entire unit is housed in a 19", 3U, 520mm rack cabinet.
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General Information
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Operating & Service Manual Version 003
Safety
2
2
The BLAXH2H300/100/150 E Amplifier 200-600MHz INR 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 BLAXH2H300/100/150 E Amplifier 200-600MHz INR can be identified by an
identifying plate at the front panel of the unit that contains the following
information :
A
/ B / C /
D
E
F
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.
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Safety
Manufacturer’s Name Plate
2.1.2
The BLAXH2H300/100/150 E Amplifier 200-600MHz INR can be identified by a
manufacturer’s name plate at the back panel of the unit that contains the following
information :
Made in France
A
D
P/N :
VAC
KVA
B
Hz
E Amps
C Phase
F
Wires +
Gnd
G
Figure 2.2. Manufacturer’s Name Plate
8 (49)
•
(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.
BRUKER BIOSPIN
Operating & Service Manual Version 003
Safety Labels and Symbols
Safety Labels and Symbols
2.2
Warning Signs
2.2.1
Danger
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.
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.
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Safety
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Operating & Service Manual Version 003
Installation
3
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"
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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 BLAXH2H300/100/150 E Amplifier 200-600MHz INR 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 :
Input current max :
Frequency :
208-230VAC
3,5A
50/60Hz
System Check
3.4
Before applying power for the first time the following items should be checked:
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•
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 BLAXH2H300/100/150 E Amplifier 200-600MHz INR has a nominal input
level of +4dBm. Ensure that the system drivers are operating at these levels.
•
Output RF loads are connected.
BRUKER BIOSPIN
Operating & Service Manual Version 003
Initial Turn on Procedure
Initial Turn on Procedure
3.5
The following list describes how to turn on the BLAXH2H300/100/150 E Amplifier
200-600MHz INR 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
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Operating & Service Manual Version 003
Operation
4
4
Front Panel Description
4.1
The BLAXH2H300/100/150 E Amplifier 200-600MHz INR front panel is provided
with 2 x 13 indicators for status monitoring, 13 coaxial connectors, 2 interface
connectors 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.
Channel ON
Indicates when the RF Power is present on the H channel or X channel.
2H ON
Indicates when the RF Power is present on the 2H channel.
2H Error
Indicates when an error has occured on the 2H channel.
This could be a:
- Duty cycle error,
- Pulse width error.
This Led is also coupled with the overheat error.
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Operation
Coaxial Connectors
4.1.2
Table 4.2.
Coaxial Connectors Assignment
IN1, IN2, IN3
RF input of the embedded router, SMA type connector (female).
Default entries are :
- IN 1 to channel H and allows the channel to deliver full power at nominal
+4dBm drive.
- IN 2 to channel X and allows the channel to deliver full power at nominal
+4dBm drive.
FX IN
Connection from SGU auxiliary RF output. This is the input of the 2H amplifier.
FO IN
Connection from the L-TX 2H-TR. This is the 2H lock signal.
X OUT / H OUT
RF output N type connector (female).
2H OUT
Connection to the HPPR 2H-module. This is either the output of the 2H amplifier and the 2H lock signal.
BLNK X / BLNK H
BLNK 2H
Blanking signals of channel X, H or 2H, 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.
LTX BLNK
Connection to L-TX TX-BLNK. This signal, the same as BLNK 2H, is used to
blank the L-TX (ECL02 or higher) during Deuterium decoupling.
SEL 2H
This signal is used to command the RF switch located on the 2H amplifier
board with the same polarity as a BLNK 2H signal.
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.
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RJ45 Pin Assignment
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
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Operating & Service Manual Version 003
Front Panel Description
Accessory Connector
4.1.4
Depending of the probe model, this connector makes it possible to connect the
QNP accessory.
This accessory (BRUKER part number W1345201) is reconized by "cf" and allows
automatic routing to the probe.
Device Front View
4.1.5
BLAXH2H300/100/150 E
1
Rx
200-600MHz
X
H
8
Tx
IN 1
RF POW. FLT
CH ON
OVERDRIVE
ETH. 10/100
ACCESSORY
IN 2
+32V
D. C.
+15V
P. W.
-15V
MISMATCH
+3.3V
OVERHEAT
2H ON
2H ERROR
1
LTX BLNK
O
FO IN
LINE
X OUT
H OUT
2H OUT
IN 3
BLNK X
BLNK H
BLNK 2H
FX IN
SEL 2H
W1345096 /
/ 3.0 / 0001
BLAXH2H300/100/150
200-600MHz INR
Figure 4.1. BLAXH2H300/100/150 E Amplifier Front Panel Design
Figure 4.2. BLAXH2H300/100/150 E Amplifier Front Panel View
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Operation
Rear Panel Description
4.2
The rear Panel of the BLAXH2H300/100/150 E Amplifier 200-600MHz INR is free
of elements in exception of the three pole (2P + E) line filter socket.
Device Rear View
4.2.1
Made in France
208-230 VAC 50/60 Hz
1 Phase
0.8 KVA
2 Gnd
3.5 Amps
Wires +
P/N : W1345096
Figure 4.3. BLAXH2H300/100/150 E Amplifier Rear Panel Design
Figure 4.4. BLAXH2H300/100/150 E Amplifier Rear Panel View
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Operating & Service Manual Version 003
Technical
Description
5
System Overview
5
5.1
The BLAXH2H300/100/150 E Amplifier 200-600MHz INR provides :
•
A RF Output of 300W on the X channel Output X OUT, over the full frequency
range 6 to 365MHz.
•
A RF Output of 140W on the H channel Output H OUT, over the full frequency
range 200 to 564MHz ( also 100W from 180 to 220MHz and at 600MHz).
•
A RF Output of 150W on the 2H channel Output 2H OUT, over the full
frequency range 30 to 92MHz.
The RF section of the system consists of an embedded router fixed on the front
panel and a linear module BLMXH2H300/100/150-E, mounted around a single,
self-contained Push fan assembly, heatsink.
The embedded router has three RF inputs and two outputs respectively wired to
channel H and channel X located on the BLMXH2H300/100/150-E module. The
2H channel is not routed.
The linear module BLMXH2H300/100/150-E includes three class AB power
amplifiers. The amplifiers for the H and 2H channels are located on the top side of
the module, and the one for the X channel on the bottom side.
X and H channel outputs are connected to the front panel of the amplifier via a
bi-directional high dynamic coupler. The 2H channel output is connected directly
to the front panel.
The entire system is tied together by a Digital Signal Processing control board,
processing information from the amplifier and blanking signal, providing protection
to X and H channels from excessive peak power, duty cycle and pulse width for
average power, maximum reflected power and heatsink overtemperature.
The DSP control board reads identification information of the amplifier (BIS).
Monitoring of Fan status, Supply status & LED status is also performed by the
control board.
Moreover, a 2H-E supervisor board is in relation with the DSP control board, to
ensure protection of the 2H channel.
These are the following:
•
•
•
Duty cycle and Pulse width (Average Power).
Heatsink overtemperature.
Fan assembly misfunction.
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+32V (x3)
+15V
-15V
+3.3V
GND
BIS
Board
Front
panel
indicators
2H-E Supervisor
+15V
+15V
Supply
Status
POWER SUPPLY
Detection 2H
ON/OFF
Controlled
Bias 2H
Switched
Power Supply
Assemblies
ATT2
DSP to QNP
Interface
2H Error &
Monitoring
N
Routing Selection & BIS
Line
Filter
Circuit Breaker
+32V
-15V
E
L
Gating 2H
BLA-DSP Control Board
A3
+15V
BLNK X
(Gating)
*
A2
Forward X
BLNK H
(Gating)
Detection X
RF Pin Switch
A4
Bi-directional
High dynamic
Coupler
Reflected X
SEL 2H
Gating X
A1
+32V
ATT1
A2
Gating X
Power Amplifier Channel 2H
Bias
A1
+15V
*
A3
Bi-directional
High dynamic
Coupler
-15V
BLNK 2H
(Gating)
Detection H
ATT1
A3
Gating H
RF Switch
A2
Forward H
LTX BLNK
Gating H
Power Amplifier Channel X
A1
-15V
FX IN
Router
RF Switch
Reflected H
FO IN
IN 3
IN 2
IN 1
+15V
*
ATT1
Power Amplifier Channel H
1 are thermo
* Attenuators
compensated attenuators
QNP
Accessory
Ethernet
10/100
2H OUT
X OUT
H OUT
Technical Description
Heatsink
Temp.
Fans
Status
+15V
-15V
+3.3V
+32V
Figure 5.1. BLAXH2H300/100/150 E Amplifier System Block Diagram
Operating & Service Manual Version 003
OUT 2
AO2
+15V
Combiner
Combiner
Router 3:2
Routing Selection Interface
OUT 1
AO1
System Overview
BIS
AI3
AI2
IN 2
IN 3
AI1
IN 1
Routing
Selection
Figure 5.2. Embedded Router Block Diagram
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Technical Description
Theory of Operation
5.2
RF Path
5.2.1
The BLAXH2H300/100/150 E amplifier (P/N: W1345096) consists of a 3 inputs
embedded router and three Class AB power amplifiers.
A nominal input power level of +4dBm produces a nominal output peak power of :
•
300W for 10% duty cycle at 100ms pulse width maximum on the X channel
output.
•
140W for 25% duty cycle at 100ms pulse width maximum on the H channel
output.
•
150W for 10% duty cycle at 5ms pulse width maximum on the 2H channel
output.
The unit is also capable of longer pulses for lower average power.
Embedded Input Router
The embedded router consists of a class A RF amplifier IC’s and RF switches,
manufactured on a Gallium Arsenide process.
It is built on a five independent cells architecture with three RF input cells and two
output cells. The RF input cells ensure the function of amplification and routing,
the output cells ensure the function of combining, RF amplitude thermo-stability
and amplification.
The three RF inputs could be routed alone or combined to the first or the second
RF output by selecting the wished RF path through the BLA controller board. The
same RF input cannot be routed at the same time towards the two RF outputs.
Each entire RF path has a nominal 15dB of gain and operates at +15VDC.
Also, the router is equipped with an EEPROM for BIS information.
RF Power amplifier Channel X300
In the first section of this power amplifier, the RF input signal crosses the RF
detection path. Then it is conveyed via an AsGa RF Switch to a thermo
compensated attenuator and two class A drivers to build a nominal 25dB to 29dB
gain block.
In this section, only the RF switch requires a control board conditioned gating
signal to control the operation of the switching element.
The second section of the PA includes two FET transistors.
The circuitry around the transistors consists of complementary input and output
transformers and baluns and operates the devices in push-pull.
This section requires a control board conditioned gating signal in order to control
the bias gate voltage on the gates of the FETs.
The input-output gain of this section is at nominal 13dB.
The RF power amplifier has a 38dB nominal gain and operates at +32VDC.
With the embedded router gain, the entire RF path has a 53dB nominal gain.
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Operating & Service Manual Version 003
Theory of Operation
RF Power Amplifier Channel H100
In the first section of this power amplifier, the RF input signal crosses the RF
detection path. Then it is conveyed to a thermo compensated attenuator, a RF
switch and two class A drivers to build a nominal 26dB gain block.
In this section, the RF switch and the second class A transistor requires a control
board conditioned gating signal to improve better anti-droop behavior.
The second section of the PA includes one FET transistor.
The circuitry around the transistor consists of complementary input and output
transformers and baluns and operates the devices in push-pull.
This section requires a control board conditioned gating signal in order to control
the bias gate voltage on the gates of the FET.
The input-output gain of this section is at nominal 10dB.
The RF power amplifier has a 36dB nominal gain and operates at +32VDC.
With the embedded router gain, the entire RF path has a 51dB nominal gain.
RF Power Amplifier Channel 2H150
In the first section of this power amplifier, the input RF signal is fed directly to a
hybrid amplifier followed by the RF detection path and a thermo compensated
attenuator. Then the RF signal is amplified by a class A driver to build a nominal
38dB gain block.
The second section of the PA includes a FET transistor.
The circuitry around consists of complementary input and output transformers and
baluns.This transistor requires a control board conditionned gating signal in order
to control the bias gate voltage. The input-output nominal gain value of this
section is 13dB.
The entire RF power amplifier has a 51dB nominal gain and operates at +32VDC.
2H RF Power Switch
The output of the 2H150W power amplifier is connected directly to an RF Power
switch, located on the same board. This switch is used to select either the 2H
amplifier or the lock transmitter.
It is composed of PIN diodes and provides a 60dB isolation between the 2H
OUTPUT and the FO IN input when the 2H amplifier is selected. The PIN diodes
switch is selectable by SEL 2H signal for routing FX IN to 2H OUT when the signal
is TTL low or FO IN to 2H OUT when the signal is TTL high. PIN diodes also have
0.4dB insertion loss between FO IN and 2H OUT when BLNK 2H signal is TTL
high and SEL 2H signal is TTL high. In this mode, the LTX signal can feed
through.
RF Coupler H and X
The bi-directional high dynamic couplers on the front panel provide an
approximate 1V peak DC signal for full output power and also a peak DC signal
for reflected power on channel H and X.
Both signals, forward and reflected, are analyzed by the BLA Control board for
monitoring and protection setting.
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Technical Description
BLA Control Board
5.2.2
The BLA Control Board has 3 main functions:
1. Conditions the input blanking (BLNK) signal and delivers it to the above
mentioned RF Paths.
2. Allows Ethernet communication with the workstation.
3. Monitor the output characteristics of the amplifier thanks to the DC peak
detection of the bi-directional coupler.
Electronic circuitry processes the detection information and protect the
amplifier from overstress like :
•
Forward and reflected peak power
MAX. RF SHAPE AMPLITUDE
FORW. OR REFL.
RF SHAPE
Figure 5.3. Peak Power Limitation
The peak power limitation is the maximum RF forward shape amplitude
allowed at the amplifier output.
Limitation range : from 1% to 200% of nominal power.
The peak power limitation is checked for each sample (10 million samples
per second), and the maximum peak value is latched then cleared by a
read operation (for monitoring purpose).
•
Forward pulse width
FORW. RF SHAPE
PW LIMIT
IF POWER > 100% NOMINAL POWER THEN FAULT DETECTION
Figure 5.4. Forward Pulse Width Limitation
The pulse width is the lapse of time during which the nominal power can be
applied.
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Operating & Service Manual Version 003
Theory of Operation
Limitation range : from 0.1ms to 512ms.
The pulse width value is updated every 100µs.
•
Forward pulse duty cycle
The duty cycle value is the ratio between measured input power during
pulse width limitation value divided by duty cycle limitation value and the
nominal power during the same time.
For example, if the pulse width limitation is set to 3ms and duty cycle is
limited to 10%, then duty cycle value equals the measured input power
during 30ms (3ms / 0.1) divided by the nominal power during 30ms.
Limitation range : from 1% to 100%.
The duty cycle value is updated every 100µs.
•
Excess of reflected power (Mismatch)
The mismatch value is the ratio between the reflected power value and the
forward power value.
Limitation range : from 1% to 100%.
The mismatch value is updated every 100µs.
•
Other protections
The control board also detects the following faults :
- Power supply fault
- Fan failure
- Heat sink temperature to protect against thermal overstress
- Fault detection timings
Table 5.1.
Fault Detection Timings
Fault
Detection delay (max)
Peak power
500 ns
Duty cycle
100 µs
Pulse Width
100 µs
Mismatch
100 µs
Power Supply, Fan
200 ns
Heat sink temperature
500 ms
Peak, pulse width, duty cycle, mismatch and also mean power values can
by read out at any time from the main DSP for monitoring purpose.
- Fault protection reset.
If one of these overstresses appears the board automatically resets the
fault flags after 2 seconds, the gating signal is disabled and the status led
board on the front panel displays the fault.
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Technical Description
This means, for example, that when a pulse width fault occurs, the amplifier
channel is disabled after the detection delay. The side effect is that the fault
condition disappears since the channel's output power is null.
After 2 seconds, the channel is switched on and the cycle begins again
(unless the channel RF input signal is re-adjusted to meet the power
limitations).
2H-E Supervisor Board
5.2.3
The 2H RF output power is coupled via resistive coupling to the 2H-E Supervisor
board. This board is in relation with the BLA Control board and ensures basics
functions of :
•
•
•
2H RF output power monitoring,
Protection against Duty cycle and Pulse width overstresses (average power),
Indication of 2H RF output power presence.
BLA Extension Board
5.2.4
This board gives the information to the control board of RF detection.
Status Led Board
5.2.5
The status led board, on the front panel of the amplifier, displays overstress
functions, supplies status, and so on, as described in "Indicators" on page 15
and "BLA Control Board" on page 24.
BIS Board
5.2.6
The universal BIS board is located on the amplifier case and contains
identifications of the amplifier.
Technical help : please contact your local representative.
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Operating & Service Manual Version 003
Servicing the BLA 6
6
The BLAXH2H300/100/150 E Amplifier 200-600MHz INR provides diagnosis and
servicing web pages relies on HTTP, allowing service access with any web browser.
Accessing the BLA Amplifier
6.1
The BLAXH2H300/100/150 E Amplifier 200-600MHz INR is accessible via the
BLA control board with its IP address.
The IP address is given during "cf" by using TOPSPIN 2.5x or better software on
the workstation.
In case of problems :
•
•
•
•
Check the RJ45 cabling between amplifier, Ethernet switch and workstation.
Check the Ethernet switch power.
Check if the green LED on the amplifier RJ45 connector lights up.
Check the front panel of the amplifier, LED's indicators +32V, +15V, -15V and
+3.3V ON must have lit.
To access the BLAXH2H300/100/150 E Amplifier 200-600MHz INR, type "ha" in
TOPSPIN 2.5x or better and choose the BLA that should be accessed or start
your favourite web browser and type the given IP address as URL.
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Servicing the BLA
Sub Toolbar Information
6.2
Device Information (default)
6.2.1
You should get the following start screen.
Figure 6.1. Device Information
This page gives you general information about the amplifier (default page).
In the main toolbar, we can see that a BLA is displayed.
The left panel is the navigation menu. It can be used to navigate through the
service pages or choose another tab in the sub toolbar.
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Sub Toolbar Information
Amplifier Status
6.2.2
Leads you to a page giving information about the current status of the amplifier.
Figure 6.2. Amplifier Status
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Servicing the BLA
Sub Toolbar Advanced Operations
6.3
Device Information (advanced)
6.3.1
You should get the following start screen.
Figure 6.3. Device Information
This page gives you general information about the amplifier.
The left panel is the navigation menu. It can be used to navigate through the
service pages or choose another tab in the sub toolbar.
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Sub Toolbar Advanced Operations
Amplifier Limitations
6.3.2
Leads you to a page giving several default and current limits of the amplifier.
If you want, for any reasons, to change the current limits of the amplifier, press
Change limits.
Figure 6.4. Amplifier Limitations
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Servicing the BLA
Change Limits
6.3.3
Read the warnings, change limit parameters and press Apply if you are sure of
that.
Figure 6.5. Change Limits (Channel H)
Figure 6.6. Change Limits (Channel X)
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Sub Toolbar Advanced Operations
Routing Information and Setting
6.3.4
Leads you to a page giving information about the current routed RF path at the
amplifier inputs.
Default RF paths are INPUT 1 to CHANNEL 1 and OUTPUT 2 to CHANNEL 2.
2H RF path is fixed route.
Figure 6.7. Routing Information and Setting
Read the warnings, it is allowed to change routing configuration of the input router
and the output router (ex: new route INPUT2 to CHANNEL1 and INPUT3 to
CHANNEL2), press set new route if you are sure of that.
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Servicing the BLA
Sub Toolbar Maintenance
6.4
Device Information (maintenance)
6.4.1
You should get the following start screen.
Figure 6.8. Device Information
This page gives you general information about the amplifier.
The left panel is the navigation menu. It can be used to navigate through the
service pages or choose another tab in the sub toolbar.
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Sub Toolbar Maintenance
Self-Test & Software Reset
6.4.2
Leads you to a page allowing you to do a self-test on the BLA control board
(Hardware test) and to do a software reset.
Both operations can be done if the amplifier doesn't work correctly.
Figure 6.9. Perform Self Test and Report
Read the warnings, press Start the Self Test.
You should have only gray lines in the report.
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Servicing the BLA
Figure 6.10. Perform Software Reset and Report
Read the warnings, press Perform Software Reset.
You should have the following screen.
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Operating & Service Manual Version 003
Sub Toolbar Maintenance
Firmware Update
6.4.3
Leads you to a page allowing you to download new firmware.
Figure 6.11. Firmware Update
Read the warnings, press the Browse button for selecting the new firmware file to
download and press Update. Download the new firmware will take a few minutes.
NOTE : This button caption depends on your operating system language settings.
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Servicing the BLA
BIS Content
6.4.4
Leads you to a page giving information about the current BIS programmed on the
amplifier.
Figure 6.12. BIS Content
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Operating & Service Manual Version 003
Specifications
7
Common Characteristics
Table 7.1.
7
7.1
Amplifier Common Characteristics
Constant Internal Protection
Supplies, fans faults and over temperature.
Forward Power : peak & CW power, pulse width and duty cycle.
Reflected Power : peak & CW power, pulse width and duty cycle
for 2H channel.
Front Panel Indicators
Amplifier Status Led Board.
Front Panel Interfaces
1 x I/O 8 pins RJ45 connector,
1 x 7 pins female connector for QNP Accessory.
Front Panel Controls
1 x AC line ON/OFF switch,
1 x SEL 2H switch selection signal.
Front Panel Connectors
5 x RF input,
3 x RF output,
3 x blanking input (gating),
1 x blanking output (gating).
Rear Panel Connectors
1 x AC line in socket.
Cooling System
Forced-air cooling (from front to rear).
Size
19" rack cabinet x 3U height x 520mm depth.
Weight
23kg
Power Requirements
208-230 VAC ± 10% single phase 50-60Hz.
Bruker Biospin part number W1304006.
Consumption max. 0.8kVA.
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Specifications
General Specifications
7.2
Channel X 300W Output
7.2.1
Table 7.2.
Channel X 300W Output Specifications
Frequency Range
6 to 365MHz
Linear Gain
53dB ±1dB typical
Gain Flatness
±1dB max.
Minimum Pulsed Output Power
(@ nominal Input +4dBm)
300W min. full range
CW Output Power (Internal Limitation)
30W max.
Linear Output Power
300W typical @ 1dB compression
Linearity
±1dB to 300W typical
Amplifier Biasing
Class AB operation
Blanking Delay Time
1µs min.
RF Rise Time
< 100ns
RF Fall Time
< 50ns
DC Ringing
±500mV typical (due to blanking signal)
Input Noise Figure
9dB typical
Output Noise Power (Unblanked)
-112dBm @ 1Hz
Output Noise Power (Blanked)
< 25dB over Thermal Noise
Input/Output Impedance
50Ω
Input V.S.W.R. Route OFF
1.2 max.
Input V.S.W.R. Route ON
1,3 max. (100 to 365MHz)
(up to 1.9 max. @ 20MHz)
Output Harmonics (2fc ; 3fc)
-30dBc ; -10dBc max. @ 300W
Pulse Width (Internal Limitation)
100ms @ 300W (up to CW @ 30W)
Duty Cycle (Internal Limitation)
10% @ 300W (up to 100% @ 30W)
Droop & Pulse Flatness
±4% typical @ 300W for 20ms Pulse Width
±1.5% typical @ 300W for 1ms Pulse Width
Amplitude Stability vs. Temperature
±0.1% / °C max.
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Operating & Service Manual Version 003
General Specifications
Channel H 100W Output
Table 7.3.
7.2.2
Channel H 100W Output Specifications
Frequency Range
180 to 600MHz
Linear Gain
51dB ±1dB typical
Gain Flatness
±1dB max.
Minimum Pulsed Output Power
(@ nominal Input +4dBm)
140W min. from 220 to 564MHz
100W min. from 180 to 220MHz and @ 600MHz
CW Output Power (Internal Limitation)
35W max.
Linear Output Power
80W typical @ 1dB compression
Linearity
±1dB to 80W typical
Amplifier Biasing
Class AB operation
Blanking Delay Time
1µs min.
RF Rise Time
< 100ns
RF Fall Time
< 50ns
DC Ringing
±200mV typical (due to blanking signal)
Input Noise Figure
8dB typical
Output Noise Power (Unblanked)
-115dBm @ 1Hz
Output Noise Power (Blanked)
Thermal Noise
Input/Output Impedance
50Ω
Input V.S.W.R. Route OFF
1.2 max.
Input V.S.W.R. Route ON
1.3 max.
Output Harmonics (2fc ; 3fc)
-40dBc ; -16dBc max. @ 100W
Pulse Width (Internal Limitation)
100ms @ 140W (up to CW @ 35W)
Duty Cycle (Internal Limitation)
25% @ 140W (up to 100% @ 35W)
Droop & Pulse Flatness
±2% typical @ 140W for 100ms Pulse Width
Amplitude Stability vs. Temperature
±0.15% / °C max.
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Specifications
Channel 2H 150W Output
7.2.3
Table 7.4.
Channel 2H 150W Output Specifications
Frequency Range
30 to 92MHz
Linear Gain
50dB ±1dB typical
Gain Flatness
±1dB max.
Minimum Pulsed Output Power
(@ nominal Input +4dBm)
150W min. full range
CW Output Power (Internal Limitation)
15W max.
Linear Output Power
150W typical @ 1dB compression
Linearity
±1dB to 150W typical
Amplifier Biasing
Class AB operation
Blanking Delay Time
3µs min. (due to PIN diodes switch commutation)
RF Rise Time
< 500ns (due to PIN diodes switch commutation)
RF Fall Time
< 50ns
DC Ringing
N/A
Input Noise Figure
4.5dB typical
Output Noise Power (Unblanked)
-120dBm @ 1Hz
Output Noise Power (Blanked)
< 17dB over Thermal Noise
Input/Output Impedance
50Ω
Input V.S.W.R.
1.3 max. (No Router)
Output Harmonics (2fc ; 3fc)
-25dBc ; -11dBc max. @ 150W
Pulse Width (Internal Limitation)
5ms @ 150W (up to CW @ 15W)
Duty Cycle (Internal Limitation)
10% @ 150W (up to 100% @ 15W)
Droop & Pulse Flatness
±2% typical @ 150W for 5ms Pulse Width
Amplitude Stability vs. Temperature
±0.15% / °C max.
Table 7.5.
Channel 2H 150W Pin Diode Switching Specifications
Insertion FO_IN vs 2HOUT
0,4dB typical
Isolation 2HOUT vs FO_IN
> 60dB full range
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Operating & Service Manual Version 003
Service Information
and Maintenance 8
8
Every intervention on the device must be carried out by an authorized and
qualified person. Any failure due to a non-respect of the following instructions will
not be attributable to BRUKER BIOSPIN and will not be covered by the guarantee
clauses.
Preventive Maintenance of the RF Module on BLA-Type Amplifiers
8.1
The RF module inside BLA's Amplifiers is equipped with a easily extractible PUSH
FAN Assembly.
Fan's on assembly have a high reliability and manufacturer gives a expected live
time of 70000 hours (8 years) at 25°C and 5 years at 60°C.
Replacement of the assembly could be done in the field when a misfonction of
fans is detected by lightning from the OVERHEAT Status Led.
To prevent such a misfonction, a preventive maintenance could be done every 4
years.
This assembly can be ordered on the manufactory BBIO-FR by P/N:
•
W1346523 «PUSH FAN ASSEMBLY 6».
Operation
8.1.1
Read below or see SIH0292.
1. Disconnect all cables from the front panel and the supply connector on the rear
panel. Remove the amplifier from the NMR console and place it on a secure
flat surface.
2. Unscrew and remove the coverage plate from the amplifier.
3. Disconnect the 2 wires (red +32V / black GND) from the RF module dispatch
supply connectors and disconnect the fan status wires (white) from BLA
Control board connector J18.
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Service Information and Maintenance
Push fan supply
connector
Screws for Push
fan assembly
Fans status wires from
BLA Control board
connector J18
Figure 8.1. Push Fan Assembly
4. Unscrew the 2 screws from the top of the push fan assembly.
5. Remove the push fan assembly.
6. Place correctly the new fan assembly in the bottom holes from the RF module
and screw it.
7. Connect all wires (status and supply).
8. Connect line cord and turn on the BLA amplifier. Note that the fans are turning
and no OVERHEAT status led appears on front panel.
9. Put the coverage plate on the BLA amplifier and screw it.
10. Put the amplifier in the NMR console, connect all cables on the front panel and
the line cord on the rear panel.
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Operating & Service Manual Version 003
Figures
1 General Information
5
2 Safety
7
Figure 2.1. Identifying Plate .................................................................................... 7
Figure 2.2. Manufacturer’s Name Plate ................................................................... 8
3 Installation
11
4 Operation
15
Figure
Figure
Figure
Figure
4.1.
4.2.
4.3.
4.4.
BLAXH2H300/100/150
BLAXH2H300/100/150
BLAXH2H300/100/150
BLAXH2H300/100/150
E
E
E
E
Amplifier
Amplifier
Amplifier
Amplifier
Front Panel Design ........................
Front Panel View ...........................
Rear Panel Design .........................
Rear Panel View ............................
17
17
18
18
5 Technical Description
19
Figure
Figure
Figure
Figure
20
21
24
24
5.1.
5.2.
5.3.
5.4.
BLAXH2H300/100/150 E Amplifier System Block Diagram ...................
Embedded Router Block Diagram ........................................................
Peak Power Limitation .........................................................................
Forward Pulse Width Limitation ...........................................................
6 Servicing the BLA
27
Figure
Figure
Figure
Figure
Figure
Figure
Figure
Figure
Figure
Figure
Figure
Figure
28
29
30
31
32
32
33
34
35
36
37
38
6.1. Device Information ..............................................................................
6.2. Amplifier Status ...................................................................................
6.3. Device Information ..............................................................................
6.4. Amplifier Limitations ............................................................................
6.5. Change Limits (Channel H) .................................................................
6.6. Change Limits (Channel X) ..................................................................
6.7. Routing Information and Setting ..........................................................
6.8. Device Information ..............................................................................
6.9. Perform Self Test and Report ..............................................................
6.10.Perform Software Reset and Report ....................................................
6.11.Firmware Update ................................................................................
6.12.BIS Content ........................................................................................
7 Specifications
39
8 Service Information and Maintenance
43
Figure 8.1. Push Fan Assembly ............................................................................ 44
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BRUKER BIOSPIN
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Figures
46 (49)
BRUKER BIOSPIN
Operating & Service Manual Version 003
Tables
1 General Information
5
2 Safety
7
3 Installation
11
4 Operation
15
Table 4.1. Indicators Assignment ......................................................................... 15
Table 4.2. Coaxial Connectors Assignment .......................................................... 16
Table 4.3. RJ45 Pin Assignment .......................................................................... 16
5 Technical Description
19
Table 5.1. Fault Detection Timings ....................................................................... 25
6 Servicing the BLA
27
7 Specifications
39
Table
Table
Table
Table
Table
39
40
41
42
42
7.1.
7.2.
7.3.
7.4.
7.5.
Amplifier Common Characteristics .......................................................
Channel X 300W Output Specifications ...............................................
Channel H 100W Output Specifications ...............................................
Channel 2H 150W Output Specifications .............................................
Channel 2H 150W Pin Diode Switching Specifications .........................
8 Service Information and Maintenance
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47 (49)
Tables
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Operating & Service Manual Version 003
End of Document
Operating & Service Manual Version 003
BRUKER BIOSPIN
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