Noise Com UFX7000 Series Manuel utilisateur
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NOISE COM, INC.
TABLE OF CONTENTS
I. GENERAL INFORMATION
1-1 Special Instructions
1-2 Introduction
1-3 Description of the Basic Unit
1-4 Options and Optional Configurations
II. SPECIFICATIONS
2-1 Instrument Specification
2-2 Functional Specifications
2-3 Block Diagram
III. INSTALLATION
3-1 Initial Inspection
3-2 GPIB (IEEE 488 BUS) Interconnection
3-3 GPIB Address
3-4 RS 232, RS 422, RS 423 Interconnection
IV. OPERATION
4-1 Introduction
4-2 Front Panel Controls
4-3 Remote Operation
V. PERFORMANCE VERIFICATION
VI. ADJUSTMENT &CALIBRATION
VII. SERVICE
7-1 Common Parts
7-2 Parts List
7-3 Figures 1,2 and 3
VIII. WARRANTY
Document M016301 Pg 2 Rev. 2 2/26/03
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NOISE COM, INC.
I. GENERAL INFORMATION
1-1 SPECIAL INSTRUCTIONS
Document M016301 Pg 3 Rev. 2 2/26/03
SELECTION OF LINE VOLTAGE AND FUSES
1. Remove Power Cord.
2. Open access door to power entry module with a small
screwdriver.
3. Pull fuse carrier out. Replace fuse with required one.
(Fuse size marked on rear panel).
4. Pull voltage select wheel out and rotate until correct
voltage appears in the window when access door is closed.
(DO NOT attempt to rotate wheel in place.)
5. Replace fuse carrier into right hand side slot (this is the
only active side) with the white arrow facing to the right.
Close access door.
THIS INSTRUMENT IS SUPPLIED WITH AFUSE FO
R
THE VOLTAGE SELECTED
A
LL SIGNAL AND CONTROL CABLES CONNECTED SHOULD NOT EXCEED 3
M
eters (9 Feet) IN LENGTH.
FOR PROPER OPERATION - THIS INSTRUMENT REQUIRES A 30
M
INUTE WARM-UP PERIOD PRIOR TO OPERATION.
IMPORTANT!
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NOISE COM, INC.
1-2 INTRODUCTION
This manual is the operation and maintenance manual for Series
UFX7000 & UFX9000 series Programmable Noise Generating
Instruments. It provides general information plus
installation and operation instructions.
Section I provides a description and option information for
the Programmable Noise Generating Instruments.
1-3 DESCRIPTION OF THE BASIC UNIT
Noise Com, Inc. Series UFX7000 and UFX9000 Noise Generating
Instruments represent the state of the art in noise
generators. Utilizing dedicated keys and a 4x20 LCD display
the UFX series is both user friendly and powerful. They can be
controlled manually by means of front panel controls, or,
alternately, they can be controlled remotely by means of a
controller via IEEE 488 (GPIB) BUS (RS-232, RS-422 or RS-423
option available). These Instruments operate remotely only in
the listen mode.
The case is 17" wide, 5.25" high and 12.5" deep. It is
equipped with front panel handles and fold down feet. Rack
mounting brackets for 19" rack mounting are available.
Brackets are mounted at the factory.
The RF circuit, without options, contains a noise generator
assembly, a standby switch, and a programmable attenuator
(Fig. #1). The above circuit with all options listed in the
following section (1-3) is depicted in Figure #2. The digital
interface for this unit, without options, is IEEE 488 BUS
(GPIB).
Document M016301 Pg 4 Rev. 2 2/26/03
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NOISE COM, INC.
1-4 OPTIONS AND OPTIONAL CONFIGURATIONS
Programmable Noise Generating Instrument options include:
1. Fine resolution attenuator .1db steps 0 - 127.9DB.
2. Input Power 230V 50Hz.
3. Rack Mounting Brackets (19" x 5¼").
4. Switching bandwidth by means of band limiting filters.
Frequencies to be specified by customer.
4.1 Up to 6 filters and a filter bypass for full
band operation.
4.2 7 Filters.
5. Input connector and resistive combiner. This allows a
signal, externally supplied, to be combined with the
noise output. Noise output will be 6 dB below standard
output specified.
6. The following items may be added to Item 5: Option
Items 1, 4 and a 127 dB, 1 dB step attenuator. All of
the preceeding items are programmable. These option
items will be located in the input connector arm of the
RF circuit.
7. The marker input option permits injection of a signal
into the output line. The marker input is decoupled
approximately 23 dB. Decoupled noise output is
available at the marker input.
8. Noise Power Meter option provides the user with a real
time measurement of the output noise power.
Document M016301 Pg 5 Rev. 2 2/26/03
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NOISE COM, INC.
2-2 FUNCTIONAL SPECIFICATIONS
Non Volatile memory to retain program parameters, GPIB
address, serial baud rate and user programmed control
sequences
Baud Rate : 0150,300,0600,1200,2400,4800 and
9600 to be used with optional serial
interface ports ( 8 data bits,no
parity 1 stop bit).
Time Delay: 0.1 to 999.9 seconds with 0.1 second
resolution.
Programmable Attenuator: Standard 0-127 dB in 1 dB steps.
Programmable Attenuator: Optional 127.9 dB in 0.1 dB steps.
Bandwidth selection: Optional band switching filter to
customer specification.
Consult Noise Com.
Standby Position: Power is switched into a dummy load.
Reset: A logic reset button is provided.
Second Output: Optional SPDT Switch to connect
either of two outputs.
Document M016301 Pg 7 Rev. 2 2/26/03
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NOISE COM, INC.
III. INSTALLATION
3-1 INITIAL INSPECTION
Inspect the shipping container for damage. If the container
is damaged, retain until the contents of the shipment have
been checked against the packing list and the instrument has
been checked for mechanical and electrical operation.
If the instrument has been damaged in transit, notify the
carrier as well as Noise Com, Inc.
3-2 GPIB (IEEE 488 BUS Interconnection)
The only interconnection required for GPIB operation is
between the Programmable Noise Generating Instrument and the
controller. This is accomplished by means of a standard GPIB
24 wire interface cable.
Restrictions on use of GPIB interconnections are as follows:
1. No more than 15 Instruments may be installed on the
bus.
2. Total accumulative cable length in meters may not
exceed two times the number of bus instruments, or,
20 meters, whichever is less.
3-3 GPIB (IEEE 488 BUS) ADDRESS
The programmable noise generating instrument as shipped from
the factory is preset to address 5.
3-4 RS-232, RS-422, RS-423 INTERCONNECTION (optional)
RS-232, interconnections are made by means of a DB25S
connector mounted on the rear panel. It is wired as
DTE. Pin 3 is Receive, Pin 7 is Ground and Pins 4, 5
(RTS-CSD) and Pins 6, 8, 20 (DSR, DCD, DTR) are jumper
connected.
Interconnections for RS-422 and RS-423 are made as
follows: Use Pin 12 for positive data connection and in
13 for negative data connection.
Document M016301 Pg 9 Rev. 2 2/26/03
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NOISE COM, INC
IV. OPERATION
4-1 INTRODUCTION
The NOISE/COM PNGI uses a powerful single-chip microprocessor
to accurately control the amplitude, bandwidth, and combining
of its internal broad-band noise source and an externally
applied user generated signal.
Commands to the PNGI can be entered via a front-panel
dedicated keypad. Alternately, commands can be down loaded
from any computer using the GPIB (HP-IB) IEEE-488
instrumentation bus (as a talker), or by the optional RS-232,
RS-422, or RS-423 adapters allowing connection to any
asynchronous serial interface. A front panel alphanumeric
display and lighting status indicators give the operator
visual verification of the programming process and functional
state of the device.
The PNGI includes a special non-volatile memory which will
retain various programmed parameters after the unit has been
powered-off, and restore them to the state they were in when
the instrument was last used. These preserved functions
include GPIB listener address and user programmed control
sequences specifying attenuation levels, signal bandwidth,
time delays and incremental attenuation step values.
A "Reset" button has been provided. Use of this button will
return the instrument to the power turn on state. At power
turn on, the programmable attenuator is at 127 dB and standby
is off.
When the instrument is powered up the LCD display will show
the following for several seconds:
NOISE COM, INC
PROGRAMMABLE NOISE
GENERATOR III
TYPE 2
The type code refers to the status of various factory
installed options.
Document M016301 Pg 10 Rev. 2 2/26/03
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NOISE COM INC
After a brief delay, the MAIN INFORMATION DISPLAY will
appear, similar to the display shown below:
MANUAL MODE, on the top line, indicates that the PNG is
ready to accept commands from the KEYPAD and has received
no commands from a Remote Interface (GPIB, RS-232, RS-
485). If the most recent command to the PNG were received
from a Remote Interface, rather than the Keypad, the top
line would indicate 'REMOTE MODE' to advise the user that
the PNG has most recently been under Remote Control, and
that a Keypad action (if not disabled by a remotely issued
Local Lockout Command) may interrupt a remotely controlled
operation.
If the basic unit was ordered without options then the
display would indicate the noise attenuation of 127 dB
(unless a >2 GHz unit then 79 dB is the maximum attenuation)
and the noise filter at position 1.
The internal Noise Attenuator, 'NA', and Signal Attenuator
(for an externally applied signal), 'SA' are each set to
the maximum attenuation permitted by the PNG Type. The
internal Noise Filter, 'NF', and Signal Filter, 'SF', are
set to position #1. Position #1 is a through path full
(bandwidth). The Step Size, 'ST', is set to the minimum
increment permitted by the PNG Type. If the PNG has
been internally configured to support a Power Meter, the
Noise Power delivered to the load will be displayed in this
position.
Document M016301 Pg 11 Rev. 2 2/26/03
MANUAL MODE
N
A=127.9dB NF=1
SA=127.9dB SF=1
ST=000.1 P=000.0dB
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NOISE COM, INC.
INITIAL PNG CONFIGURATION
The first time the PNG is used, and whenever the Remote
Communications requirements change, the 'LOCAL' Function should
be selected from the Keypad. By pressing this key as the
first in a sequence (key interpretations are sequence
dependent), the following information screen will be displayed:
The above display indicates that the PNG is set for remote
control via the GPIB (IEEE-488) interface, and that its GPIB
address is 5. The 'bar' underlining the New Setting '0000' is
a cursor, inviting the user to alter this parameter. A new
value may be entered from the keyboard, followed by 'ENTER'. If
only the 'ENTER'
key is pressed, without entering any new digits, the original
value will not be changed. When the 'ENTER' key is pressed,
the New Setting will be 'burned' into non-volatile memory,
replacing the previous value. The MAIN INFORMATION DISPLAY
will re-appear.
Permissible values for the GPIB/BAUD parameter are '0000' through
'0031', which represent GPIB addresses, and the discrete values
'0150', '0300', '0600', '1200', '2400', '4800', and '9600',
which represent Baud Rates for the optional RS- 232/485
Asynchronous Serial Interface. Selecting a valid GPIB address
will simultaneously enable the Serial interface at 9600 Baud.
The Serial ASCII character configuration is 8-Data Bits, NO-
Parity, 1-Stop Bit. Lower case characters are internally
converted to upper case by the PNG. The PNG will acknowledge each
Remote Command received by sending a Carriage Return (CR =
0D-hex or 13-decimal) character to the Serial Port.
Document M016301 Pg 12 Rev. 2 2/26/03
KEYBOARD SETUP
GPIB/BAUD :0005
N
EW SETTING :0000
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