ORTEC 9306 Service manual

Model 9306
1-GHz Preamplifier
Operating and Service Manual
Printed in U.S.A. ORTEC®Part No. 761700 1202
Manual Revision F

Advanced Measurement Technology, Inc.
a/k/a/ ORTEC®, a subsidiary of AMETEK®, Inc.
WARRANTY
ORTEC* warrants that the items will be delivered free from defects in material or workmanship. ORTEC makes
no other warranties, express or implied, and specifically NO WARRANTY OF MERCHANTABILITY OR
FITNESS FOR A PARTICULAR PURPOSE.
ORTEC’s exclusive liability is limited to repairing or replacing at ORTEC’s option, items found by ORTEC to
be defective in workmanship or materials within one year from the date of delivery. ORTEC’s liability on any
claim of any kind, including negligence, loss, or damages arising out of, connected with, or from the performance
or breach thereof, or from the manufacture, sale, delivery, resale, repair, or use of any item or services covered
by this agreement or purchase order, shall in no case exceed the price allocable to the item or service furnished
or any part thereof that gives rise to the claim. In the event ORTEC fails to manufacture or deliver items called
for in this agreement orpurchaseorder, ORTEC’s exclusiveliabilityandbuyer’s exclusiveremedy shallbe release
of the buyer from the obligation to pay the purchase price. In no event shall ORTEC be liable for special or
consequential damages. Quality Control
Before being approved for shipment, each ORTEC instrument must pass a stringent set of quality control tests
designed to expose any flaws in materials or workmanship. Permanent records of these tests are maintained for
use in warranty repair and as a source of statistical information for design improvements.
Repair Service
If it becomes necessary to return this instrument for repair, it is essential that Customer Services be contacted in
advance of its return so that a Return Authorization Number can be assigned to the unit. Also, ORTEC must be
informed, either in writing, by telephone [(865) 482-4411] or by facsimile transmission [(865) 483-2133], of the
nature of the fault of the instrument being returned and of the model, serial, and revision ("Rev" on rear panel)
numbers. Failure to do so may cause unnecessary delays in getting the unit repaired. The ORTEC standard
procedure requires that instruments returned for repair pass the same quality control tests that are used for
new-production instruments. Instruments that are returned should be packed so that they will withstand normal
transit handling and must be shipped PREPAID via Air Parcel Post or United Parcel Service to the designated
ORTEC repair center. The address label and the package should include the Return Authorization Number
assigned. Instruments being returned that are damaged in transit due to inadequate packing will be repaired at the
sender's expense, and it will be the sender's responsibility to make claim with the shipper. Instruments not in
warranty should follow the same procedure and ORTEC will provide a quotation.
Damage in Transit
Shipments should be examined immediately upon receipt for evidenceof external or concealeddamage. Thecarrier
making deliveryshouldbenotifiedimmediatelyof anysuch damage, sincethecarrier is normallyliable for damage
in shipment. Packing materials, waybills, and other such documentation should be preserved in order to establish
claims. After such notification to the carrier, please notify ORTEC of the circumstances so that assistance can be
provided in making damage claims and in providing replacement equipment, if necessary.
Copyright © 2002, Advanced Measurement Technology, Inc. All rights reserved.
*ORTEC®is a registered trademark of Advanced Measurement Technology, Inc. All other trademarks used
herein are the property of their respective owners.

iii
CONTENTS
WARRANTY ....................................................................... ii
SAFETY INSTRUCTIONS AND SYMBOLS ............................................... iv
SAFETY WARNINGS AND CLEANING INSTRUCTIONS ..................................... v
1. DESCRIPTION................................................................... 1
2. SPECIFICATIONS ................................................................ 1
2.1. PERFORMANCE ............................................................. 1
2.2. INPUTSANDOUTPUTS ....................................................... 1
2.3. ELECTRICALANDMECHANICAL................................................ 1
2.4. WEIGHT ................................................................... 2
3. INSTALLATIONANDOPERATION ................................................... 2
4.MAINTENANCE .................................................................. 2

iv
SAFETY INSTRUCTIONS AND SYMBOLS
This manual contains up to three levels of safety instructions that must be observed in order to avoid
personal injury and/or damage to equipment or other property. These are:
DANGER Indicates a hazard that could result in death or serious bodily harm if the safety instruction is
not observed.
WARNING Indicates a hazard that could result in bodily harm if the safety instruction is not observed.
CAUTION Indicates a hazard that could result in property damage if the safety instruction is not
observed.
Please read all safety instructions carefully and make sure you understand them fully before attempting to
use this product.
In addition, the following symbol may appear on the product:
ATTENTION – Refer to Manual
DANGER – High Voltage
Please read all safety instructions carefully and make sure you understand them fully before attempting to
use this product.

v
DANGER Opening the cover of this instrument is likely to expose dangerous voltages. Disconnect the
instrument from all voltage sources while it is being opened.
WARNING Using this instrument in a manner not specified by the manufacturer may impair the
protection provided by the instrument.
CAUTION To prevent moisture inside of the instrument during external cleaning, use only enough liquid
to dampen the cloth or applicator.
SAFETY WARNINGS AND CLEANING INSTRUCTIONS
Cleaning Instructions
To clean the instrument exterior:
!
Unplug the instrument from the ac power supply.
!
Remove loose dust on the outside of the instrument with a lint-free cloth.
!
Remove remaining dirt with a lint-free cloth dampened in a general-purpose detergent and water
solution. Do not use abrasive cleaners.
!
Allow the instrument to dry completely before reconnecting it to the power source.

vi

1
ORTEC MODEL 9306
1-GHz PREAMPLIFIER
1. DESCRIPTION
The ORTEC Model 9306 1-GHz Preamplifier is
optimized for fast timing and counting applications
with detectors that deliver pulseswith ultra-fast rise
times. An output rise time of 350 ps and a non-
inverting gain of 100 make the Model 9306 ideal for
use with microchannel-plate photomultipliers,
microchannel plates, channeltrons, silicon diodes,
fast photomultiplier tubes, and electron multipliers.
The compact preamplifier case with captive power
cord permits close coupling to the detector to
minimize sensitivity to environmental noise.
To preserve the ultra-fast rise time, the Model 9306
is designed to accept and deliver signals on high-
quality, 50-ohm, coaxial cables with SMA
connectors and 50-ohm terminations. The input is
ac-coupled with a 50-ohm input impedance, and is
protected to a maximum of ±1 V. Two identical
outputs are provided for convenient, simultaneous
connection to two different instruments. Both
outputsare ac-coupled, short-circuit protected, and
capable of driving pulse amplitudes from 0 to
!
2 V
into 50-ohm loads.
The1-GHzPreamplifierderivesits+24
!
Vdcpower
from a NIM moduleor power supply via the captive
power cord and standard, 9-pin, D connector. The
ORTEC Model 4002P Portable Power Supply and
most NIM amplifiers provide the required power on
a compatible preamplifier power connector.
2. SPECIFICATIONS*
2.1. PERFORMANCE
All specification are measured with a pulser having
a pulse width of 2 nsFWHM, and a rise time of 150
ps. Where significant, the measurement is
corrected for the rise times of the pulser, coaxial
cable, and oscilloscope. The specifications are
identical for OUTPUTS 1 and 2.
GAIN Nominally 100 (50 to 150), non-inverting,
into a 50-ohm output load.
OUTPUT RISE TIME Typically 350 ps.
BANDWIDTH (3 dB) Typically 100 kHz to 1 GHz.
NOISE <100
:
V rms equivalent input noise over
the full bandwidth.
2.2. INPUTS AND OUTPUTS
INPUT SMA input connector with 50 ohms input
impedance (ac-coupled). Input protected to a
maximum of ±1 V.
*Specifications subject to change without notice.
OUTPUT 1 SMA output connector provides a
linear output range from 0 to
!
1.75 V and a
maximum output of
!
2 V into a 50-ohm load.
Output impedance is 50 ohms, ac-coupled, and
short-circuit protected. The unused output must be
terminated with a 50-ohm load for proper operation
of the other output. An optional SMA 50-ohm
terminator is available for this purpose.
OUTPUT 2 Identical to OUTPUT 1
POWER Input power supplied through a captive
cable (length: 3 m) with a standard preamplifier
power connector (9-pin D type). Compatible with
ORTEC instruments that provide a preamplifier
power connector.
2.3. ELECTRICAL AND MECHANICAL
POWER REQUIRED +24 V at 200 mA. Captive
power cord with standard9-pinDconnector derives
power from any ORTEC instrument equipped with
the standard Preamplifier Power plug (e.g.,
spectroscopy amplifiers, 4002P Portable Power
Supply, etc.).

2
2.4. WEIGHT
Net 0.2 kg (0.4 lb).
Shipping 1.1 kg (2.4 lb).
DIMENSIONS Aluminum housing 9.5 × 6.4 × 2 cm
(3.75 × 2.5 × 0.8 in.).
3. INSTALLATION AND OPERATION
The Model 9306 Preamplifier contains no internal
power supply and must obtain power from a
separate supply such as that provided in NIM
standard supplies. The 9306 comes equipped with
a captive power cable that mates directly with the
preamplifier power output connectors provided on
manyNIMinstruments.Thepowersupply shouldbe
turned off while the 9306 is connected or
disconnected.
If only one output of the 9306 is to be used, the
other output should be terminated with a 50-ohm
terminator. A 50-ohm, SMA terminator is available
as an option. Also, it is important to note that it is
notpossibletoprovideinputover-voltageprotection
at such high frequencies.
Therefore, the magnitude of the input signal must
be less than 1 V. Excessive input voltages will
damage the 9306.
To utilize the high-frequency performance of the
9306, careful signal handling is required. The input
and output cables for the 9306 should be short,
high-quality, 50-ohm cables, since only a few
meters of lossy cable will degrade the signal rise
time. Keep the sum of the input and output cable
lengthslessthan1.7meterstoavoiddegradationof
the signal risetime. The output cable from the 9306
shouldbeterminatedwitha50-ohmimpedancethat
provides a good match to the cable impedance at 1
GHz.
The 9306 should not be subjected to temperatures
in excess of 50°C.
4. MAINTENANCE
The 9306 requires very little maintenance other than routine removal of dust and tightening of mechanical
connections.
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