Astronics Trig-Tek 203M User manual

Trig-Tek™
530B
Tracking Filter
User Manual
Publication No. 980974 Rev. B
Astronics Test Systems Inc.
4 Goodyear, Irvine, CA 92618
Tel: [phone]; Fax: [phone]
[e-mail] [e-mail]
[e-mail] http://www.astronicstestsystems.com
Copyright 2011 by Astronics Test Systems Inc. Printed in the United States of America. All rights reserved.
This book or parts thereof may not be reproduced in any form without written permission of the publisher.

THANK YOU FOR PURCHASING THIS
ASTRONICS TEST SYSTEMS PRODUCT
For this product, or any other Astronics Test Systems product that incorporates software drivers,
you may access our web site to verify and/or download the latest driver versions. The web
address for driver downloads is:
http://www.astronicstestsystems.com/support/downloads
If you have any questions about software driver downloads or our privacy policy, please contact
us at:
[e-mail]
WARRANTY STATEMENT
All Astronics Test Systems products are designed to exacting standards and manufactured in full
compliance to our AS9100 Quality Management System processes.
This warranty does not apply to defects resulting from any modification(s) of any product or part
without Astronics Test Systems express written consent, or misuse of any product or part. The
warranty also does not apply to fuses, software, non-rechargeable batteries, damage from
battery leakage, or problems arising from normal wear, such as mechanical relay life, or failure to
follow instructions.
This warranty is in lieu of all other warranties, expressed or implied, including any implied
warranty of merchantability or fitness for a particular use. The remedies provided herein are
buyer’s sole and exclusive remedies.
For the specific terms of your standard warranty, contact Customer Support. Please have the
following information available to facilitate service.
1. Product serial number
2. Product model number
3. Your company and contact information
You may contact Customer Support by:
E-Mail: [e-mail]
Telephone: [phone] (USA)
Fax: [phone] (USA)

RETURN OF PRODUCT
Authorization is required from Astronics Test Systems before you send us your product or sub-assembly for
service or calibration. Call or contact Customer Support at 1-800-722-3262 or 1-949-859-8999 or via fax at
1-949-859-7139. We can also be reached at: [e-mail].
If the original packing material is unavailable, ship the product or sub-assembly in an ESD shielding bag and
use appropriate packing materials to surround and protect the product.
PROPRIETARY NOTICE
This document and the technical data herein disclosed, are proprietary to Astronics Test Systems, and shall
not, without express written permission of Astronics Test Systems, be used in whole or in part to solicit
quotations from a competitive source or used for manufacture by anyone other than Astronics Test
Systems. The information herein has been developed at private expense, and may only be used for
operation and maintenance reference purposes or for purposes of engineering evaluation and incorporation
into technical specifications and other documents which specify procurement of products from Astronics
Test Systems.
TRADEMARKS AND SERVICE MARKS
All trademarks and service marks used in this document are the property of their respective owners.
•Racal Instruments, Talon Instruments, Trig-Tek, ActivATE, Adapt-A-Switch, N-GEN, and PAWS are
trademarks of Astronics Test Systems in the United States.
DISCLAIMER
Buyer acknowledges and agrees that it is responsible for the operation of the goods purchased and should
ensure that they are used properly and in accordance with this document and any other instructions
provided by Seller. Astronics Test Systems products are not specifically designed, manufactured or
intended to be used as parts, assemblies or components in planning, construction, maintenance or
operation of a nuclear facility, or in life support or safety critical applications in which the failure of the
Astronics Test Systems product could create a situation where personal injury or death could occur. Should
Buyer purchase Astronics Test Systems product for such unintended application, Buyer shall indemnify and
hold Astronics Test Systems, its officers, employees, subsidiaries, affiliates and distributors harmless
against all claims arising out of a claim for personal injury or death associated with such unintended use.

FOR YOUR SAFETY
Before undertaking any troubleshooting, maintenance or exploratory procedure, read carefully the
WARNINGS and CAUTION notices.
This equipment contains voltage hazardous to
human life and safety, and is capable of inflicting
personal injury.
If this instrument is to be powered from the AC line (mains) through an autotransformer,
ensure the common connector is connected to the neutral (earth pole) of the power
supply.
Before operating the unit, ensure the conductor (green wire) is connected to the ground
(earth) conductor of the power outlet. Do not use a two-conductor extension cord or a
three-prong/two-
prong adapter. This will defeat the protective feature of the third
conductor in the power cord.
Maintenance and calibration procedures sometimes call for operation of the unit with
power applied and protective covers removed. Read the procedures and heed warnings
to avoid “live” circuit points.
Before operating this instrument:
1. Ensure the proper fuse is in place for the power source to operate.
2. Ensure all other devices connected to or in proximity to this instrument are properly grounded or
connected to the protective third-wire earth ground.
If the instrument:
- fails to operate satisfactorily
- shows visible damage
- has been stored under unfavorable conditions
- has sustained stress
Do not operate until performance is checked by qualified personnel.

Publication No. 980974 Rev. B 530B User Manual
Astronics Test Systems i
Table of Contents
Chapter 1.........................................................................................................................1-1
Introduction.....................................................................................................................1-1
System Description ........................................................................................................................1-2
General.......................................................................................................................................1-2
Carrier Generator.......................................................................................................................1-3
Analyzer......................................................................................................................................1-3
System Specifications ....................................................................................................................1-3
Reference Input..........................................................................................................................1-3
Data Input...................................................................................................................................1-4
Filtered Signal Output.................................................................................................................1-4
DC of Level (Linear)...................................................................................................................1-4
DC of Frequency (Linear)...........................................................................................................1-5
DC of Level (Log) Optional.........................................................................................................1-5
DC of Frequency (Log)...............................................................................................................1-5
Bandwidth...................................................................................................................................1-5
Time Constant............................................................................................................................1-6
Controls......................................................................................................................................1-6
Indicators....................................................................................................................................1-6
Power.........................................................................................................................................1-7
Size ............................................................................................................................................1-7
Cabinets (required) ....................................................................................................................1-7
Chapter 2.........................................................................................................................2-1
Operation.........................................................................................................................2-1
Meter Input Switch......................................................................................................................2-1
Range FS Volts Switch...............................................................................................................2-1
DC Output TC Switch.................................................................................................................2-1
MANUAL-AUTO (LIMIT) Switch and BW Hz Thumb Switch......................................................2-2
OVER LOAD Light......................................................................................................................2-2
ERROR Light..............................................................................................................................2-2
DVM Front Panel Meter..............................................................................................................2-2
Wide Bandwidth Filter (Optional) ...............................................................................................2-2
Chapter 3.........................................................................................................................3-1
Performance Test............................................................................................................3-1
Test Equipment..........................................................................................................................3-1
Switch Setttings..........................................................................................................................3-1
Performance Test Procedure.....................................................................................................3-1
Checking the Bandwidth.............................................................................................................3-3

530B User Manual Publication No. 980974 Rev. B
ii Astronics Test Systems
Chapter 4 ........................................................................................................................4-1
Calibration Procedure....................................................................................................4-1
Test Equipment...........................................................................................................................4-1
Test Procedure...........................................................................................................................4-1
DC of Frequency Adjustments (Linear) ......................................................................................4-2
DC Zero Adjustments (W15B)....................................................................................................4-3
FS Range Adjust.........................................................................................................................4-3
Log of Adjustments.....................................................................................................................4-4
Bandwidth Adjustments (W 15B)................................................................................................4-5
.

Publication No. 980974 Rev. B 530B User Manual
Astronics Test Systems iii
List of Figures
Figure 1-1, 530B Tracking Filter.........................................................................................................1-2
Figure 4-1, Adjustment Resistor Locations........................................................................................4-2
Figure 4-2, Front Panel Meter Circuit Board Adjustment ...................................................................4-4

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Publication No. 980974 Rev. B 530B User Manual
Astronics Test Systems v
DOCUMENT CHANGE HISTORY
Revision Date Description of Change
A 03/31/2011 Document Control release
B 01/28/2012 Revised per ECN02268 updating bandwidth
numbers in Chapter 3.

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Publication No. 980974 Rev. B 530B User Manual
Astronics Test Systems Introduction 1-1
Chapter 1
Introduction
The 530B Tracking Filter (Figure 1-1) accepts a complex signal at its input and
provides a clean filtered signal at its output at frequencies between 5 Hz and
10,000 Hz. It automatically tracks a reference input signal and tunes the center of
the filter to that frequency. The reference signal wave form can vary from a sine
wave to a short duration pulse. Filter bandwidth can be adjusted manually or
automatically via a front panel switch.
When in the MANUAL position, a thumb switch allows the filter bandwidth to be
set from 001 Hz to 299 Hz. This bandwidth will remain constant over the entire
frequency range. When switched to Auto (limit), the filter will automatically
maintain a bandwidth, which is 10% of the Reference INPUT frequency until
limited by the value set on the BW HZ thumb switch. For example, if the setting is
50 Hz, the filter BW will stay at 10% of the reference frequency until it reaches
500 Hz, where the bandwidth would be 50 Hz. Thereafter, as the reference
frequency increases, the filter bandwidth would remain at its limit of 50 Hz.
A front panel digital meter allows monitoring NB-PH-WB signal levels. It is in true
RMS units, and has two full-scale settings of 1 or 10 VRMS. The PH (PHASE) is
degrees. There are two front panel LED’s, ERROR and OVERLOAD. The
ERROR LED illuminates when a wrong reference signal is applied. The
OVERLOAD LED illuminates if the wideband input or filtered output is exceeded.
In addition to the filtered output, the 530B also provides rear panel outputs for
linear and log DC of frequency as well as linear DC of level. A rear panel terminal
strip provides TTL signals for overload and lock conditions as well as a means to
remotely switch the full-scale range between 1 or 10 Volts.
Features include:
•Bandwidths from 1 Hz to 299 Hz
•Fixed or Variable Bandwidths
•5 to 10,000Hz Frequency Range
•True RMS Meter (NB-PH-WB)
•Linear and Log DC of Frequency
•Linear DC of Level (or log) (Both Narrow and Wide Band)
•115 or 230 VRMS Power

530B User Manual Publication No. 980974 Rev. B
Introduction 1-2 Astronics Test Systems
Figure 1-1, 530B Tracking Filter
System Description
General
The 530B Tracking Filter has two major parts. The Carrier Generator provides
tuning to the analyzer portion and generates a linear and logarithmic DC voltage
proportional to frequency.
The Analyzer part accomplishes the filtering and provides an AC Filtered output
and both linear and logarithmic DC voltages proportional to the level.

Publication No. 980974 Rev. B 530B User Manual
Astronics Test Systems Introduction 1-3
Carrier Generator
The Carrier Generator uses a phase-lock-loop to track the reference input signal
frequency. The reference frequency is multiplied by 256 and a binary divider
residing in the W15B module counts it down to X1. The output from the divider is
used to address two read-only memories, each programmed with a sine wave,
one 90º phase shifted from the other. The SIN and COS outputs of the memories
are used to tune the Analyzer. A digital counter output to analog converter
provides a linear DC output. The log of frequency is accomplished in the DSP
chip and brought out via a separate Digital to Analog Converter.
Analyzer
The Data Input first goes to a selectable gain circuit which sets the gain for either
1 Volt or 10 V RMS full scale as selected by the RANGE switch. The scaled
signal goes to the 0º and 90º MDAC (in the W15) where the signal is mixed with
the carrier signals and translated to a DC IF (Intermediate Frequency).
The DC plus side band signal is filtered by the variable Low Pass filter, and then is
again translated to the original tuned frequency. This regenerated signal is at the
output of the summing circuit. The level is scaled and brought out at the
FILTERED output jack. The WB RMS level of the input is converted to DC by a
TRMS converter, and a second for the narrow bandwidth (NB) TRMS converter.
The METER INPUT switch selects either the NB, PH (phase) or WB LEVEL to the
meter input. The log of the WB and NB levels are derived and either can be
brought out on the WB and NB Level output jacks instead of the linear outputs
selected by an internal switch (S3) for the WB or S4 for the NB outputs. PH or
WB outputs are selected to the WB LEVEL output jack by (S2).
System Specifications
Reference Input
Impedance 500 k Ohms
Frequency Response 5 Hz to 10,000 Hz
Level 50 mV Pk-Pk to 100 V Pk-Pk
Waveform Sine, Triangle, Square or Pulse (pulse
width 25 μs minimum).
Connector BNC (isolated)

530B User Manual Publication No. 980974 Rev. B
Introduction 1-4 Astronics Test Systems
Data Input
Impedance 500 k Ohms
Frequency 5 Hz to 10,000 Hz
Level 1 or 10 VRMS full scale (FS)
Connector BNC (Low side at signal ground)
Filtered Signal Output
Impedance <50 Ohms
Frequency 5 Hz to 10,000 Hz
Level 0 to 10 Volts RMS
Distortion 5 to 10,000 Hz, <5%
20 to 5,000 Hz, <2%
Accuracy ±3% of Reading, ±0.5% FS
Dynamic Range 50dB
Connector BNC (Low side at signal ground)
DC of Level (Linear)
Impedance <50 Ohms
Maximum Out WBW 10 Volts FS
Maximum Out NBW 10 Volts FS
Accuracy ±3% of Reading, ±0.5% FS
Dynamic Range 60dB
Connector BNC (Low side at signal ground)

Publication No. 980974 Rev. B 530B User Manual
Astronics Test Systems Introduction 1-5
DC of Frequency (Linear)
Impedance <50 Ohms
Maximum Output 10 Volts (10,000 Hz)
Sensitivity 0.5 mV/Hz
Accuracy ±1% of Reading, ±0.1% FS
Connector BNC (Low side at signal ground)
DC of Level (Log) Optional
Impedance <50 Ohms
Maximum Output 10 Volts = 0dB
Sensitivity 125 mV/dB
Dynamic Range 50dB
WBW/NBW (Optional)
Noise 50dB
Connector BNC (Low side at signal ground)
DC of Frequency (Log)
Impedance <50 Ohms
Maximum Output 10 Volts
Conformity 0.5 dB
Sensitivity 125 mV/dB
Connector BNC (Low side at signal ground)
Bandwidth
Accuracy of Dial ±3%
Filter Shape 5-Section Bessell

530B User Manual Publication No. 980974 Rev. B
Introduction 1-6 Astronics Test Systems
Time Constant
Fast Slow
Narrow Bandwidth 0.3 sec 1 sec.
Wide Bandwidth 0.3 sec. 1 sec.
Controls
Range FS Volts Switch Selects 1 V or 10 V FS Input Range.
Meter Input Switch Selects WB, NB amplitude, or PH (phase).
DC Output TC Switch Selects SLOW or FAST time constant for
meter (and DC outputs).
Manual Auto (Limit) Switch Selects Auto BW or Manual BW. In Auto
(Limit) mode, Bandwidth is 10% of the REF
frequency.
In the MANUAL mode, a fixed bandwidth is
selected via the front panel BW Hz thumb
switch.
Filter IN-OUT Switch Located on the front panel of the chassis,
allows the signal to pass through the
tracking filter in the Filter position and to
bypass the tracking filter in the Bypass
position.
Indicators
Level Meter 3-1/2 Digit meter indicating level in Volts
RMS or Degrees.
OVERLOAD LED LED illuminates if input to tracking filter is
too high for selected range, or if output
from filter to meter is too high.
ERROR LED LED illuminates when an in-correct signal is
applied to the REF Input.

Publication No. 980974 Rev. B 530B User Manual
Astronics Test Systems Introduction 1-7
Power
115 or 230 Volts, 50-400 Hz.
Size
7” High x 2.7” Wide x 13” Deep.
Cabinets (required)
Single-Module 4220
Six-Module 19” Rack 4200
Optional Plug-in HP and LP Filter Assy 1697-1 is
available with 3-selectable High Pass and
3-selectable Low Pass Filters. Frequency
cutoffs are: HP-5, 30 or 70 Hz, LP-5000,
10,000 or 20,000Hz.

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Introduction 1-8 Astronics Test Systems
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Publication No. 980974 Rev. B 530B User Manual
Astronics Test Systems Operation 2-1
Chapter 2
Operation
The 530B Tracking Filter is designed to require little operator attention. The
front panel has a METER INPUT switch, RANGE FS VOLTS switch, DC
OUTPUT TC switch, MANUAL-AUTO (Limit) switch (in conjunction with a BW HZ
thumb switch), an OVER LOAD LED, an ERROR LED, and a 3-1/2 Digit DVM
display. A description of each follows.
Meter Input Switch
The Meter INPUT Switch is a three-position toggle switch to select either the NB
(narrow bandwidth) or WB (wide bandwidth) TRMS DC output or the PH (phase)
DEG (degrees). The bandwidth of the NB input is determined by the BW HZ
thumb switch 001 to 299 in 1 Hz steps. The WB input has a HP-LP Filter
Assembly option with settings available to filter the WB output. See WIDE
BANDWIDTH FILTER at the end of this section. The PH DEG selects the DC of
Phase shift between the REF and DATA signal to the meter.
Range FS Volts Switch
The RANGE FS VOLTS Switch is a two-position toggle switch to select either 1
or 10 VRMS FS at the DATA INPUT jack, and at the FS meter range. The 1 or
10 VRMS FS range can be selected remotely by a ground on the terminal
labeled “RANGE”; when the remote selection is used, the RANGE switch must
be in the 10V (REMOTE) position.
DC Output TC Switch
The DC OUTPUT TC Switch is a two-position toggle switch to select either a
SLOW or FAST time constant for the NB and WB DC outputs and meter
response. The DC OUTPUT TC switch changes the time constant of both NB
and WB TRMS detectors simultaneously.

530B User Manual Publication No. 980974 Rev. B
Operation 2-2 Astronics Test Systems
MANUAL-AUTO (LIMIT) Switch and BW Hz Thumb Switch
This two-position toggle switch below the BW Hz thumb switch selects either
MANUAL or AUTO (Limit). When the MANUAL position is selected, the BW Hz
thumb switch sets the filter bandwidth in 1 Hz steps to 299 Hz. When the AUTO
(Limit) is selected, the filter bandwidth is one-tenth the reference tuning
frequency. The bandwidth is 1 Hz with a reference frequency from 10 Hz and at
20 Hz; the bandwidth of the filter is 2 Hz and as the reference frequency
changes, will maintain 10% of the reference frequency until it reaches the
number of the BW Hz thumb switch limit setting.
OVER LOAD Light
This indicator is a red LED labeled OVER LOAD. The OVER LOAD LED
illuminates when either the input or meter circuit is overloaded. When on, the
purpose of the LED is to alert the operator that an overload condition exists and
the acquired data may not be valid.
ERROR Light
This indicator is a red LED labeled ERROR. The ERROR LED illuminates when
an incorrect signal is at the REF Input. Correct REF Input signal are (levels of
50 mV–100 VRMS) with any reoccurring wave form (sine, square or triangle).
DVM Front Panel Meter
The front panel DVM (digital voltmeter) is calibrated to indicate the DATA Input
level in TRMS units for the NB and WB settings and in degrees for the PH
(Phase).
Wide Bandwidth Filter (Optional)
A plug-in HP-LP Filter Assembly, part number 1697-1, is available to filter the
wide bandwidth detector input.
The filter assembly plugs into the A4 header on the main board and screws down
to two studs. The jumper between Pin 3 and Pin 6 of A4 must be removed
before installation. The filter assembly provides three switch-selectable low-pass
filter bandwidths of 5, 10 or 20 kHz, and three switch-selectable high-pass filter
bandwidths of 5, 30 and 70 Hz. The low-pass and high-pass filters are each
four-section Butterworth designs. Other filter bandwidths can be furnished on
special order.