Optional Scope probe Input
 Currently Available Test Fixtures:  Part Number  Description  Load  -------------  --------------------------------------------  ------------------------------------------  1020-000  TTL/CMOS  DIP/DIL  Simulated  TTL/CMOS  Load  1020-001  TTL  DIP/DIL  TTL Diode Load Fan Out of 10  1020-002  TTL/CMOS  5 x 7mm SMD  Simulated  TTL/CMOS  Load  1020-003  TTL  DIP/DIL  TTL Diode Load Fan Out of 5  1020-004  TTL  5 x 7mm SMD  TTL Diode Load Fan Out of 10  1020-005  TTL  5 x 7mm SMD  TTL Diode Load Fan Out of 5  1020-006  TTL/CMOS  J Lead SMD  TTL Passive Load Fan Out of 10  1020-007  TTL/CMOS  9 x 14mm 6 lead SG615  Capacitor load 15, 30, 50pF, jumper select  1020-010  CMOS  DIP/DIL  Capacitor load 15, 30, 50pF, jumper select  1020-011  CMOS  5 x 7mm SMD  Capacitor load 15, 30, 50pF, jumper select  1020-012  CMOS  9 x 14mm SMD  Capacitor load 15, 30, 50pF, jumper select  1020-013  CMOS  5 x 7mm SMD 6 lead  Capacitor load 15, 30, 50pF, jumper select  1020-014  CMOS  9 x 14 SMD 6 lead  Capacitor load 15, 30, 50pF, jumper select  1020-020  ECL/PECL  DIP/DIL Pin 7  Ground  50 ohm load  1020-021  ECL/PECL  DIP/DIL Pin 14  Ground  50 ohm load  1020-030  DIP/DIL DUT with plug in load device  Select load modules  1020-031  5 x 7mm SMD  Select load modules  1020-040  Sine wave  DIP/DIL Pin 7 ground  Sine wave 50 ohm load  All DIP/DIL fixtures support full and half size devices
Other fixtures can be made on request.  Model 1020 DUT Test Fixtures  Fixture 1020-000 with optional Scope Probe Input  Thetestfixturecanbesuppliedinmanyforms.The
purposeofthefixtureis:  • Provide a socket and contacts to the DUT  •  Buffer  amplifier  to  drive  the  scope's  50
ohm input (performs like a FET probe)
• Provide a load to the DUT  • Provide a start test button (also tests can be         started from the PC screen)              Eachfixtureisserializedandhasacalibra-
tionfilethatthesystemuses.Thispermitseasyand
rapid changeability between fixtures. The user
selectsfromamenuwhichfixtureisbeingused.  Specialfixturescanbemadeforinterfac-  ing to handlers. PRA can assist the customer in  making their own fixtures. The fixture has DC
power and 8 TTL/CMOS lines available for
varioustypesofcontroloptions.              Thereisacompromisewhenperforming
RF  measurements  between  simple  to  use
fixtures and the best possible measurements with
the best grounding and shortest leads. PRA provides
fixtures that have been optimized for these
options.              The  fixture  can  have  an  optional  Scope
Probe  input.  This  permits  attaching  a  50  ohm  terminated scope probe to probe various points in
the  oscillator.  Optional  add-on  software  to  the
Model 1020 allows this probe to be operated as a
typical scope probe would be.              Special  dual  output  ECL/PECL  fixtures
and a universal fixture base are available.
Handler Interface Option2
Handler Interface Option1
 Model 1020 Configurations  Model 1020B-K  This is the configuration to order when a PC already exists with  MicroSoft Windows 98 or 98SE,
COM port, minimum 1024 x 768 color display and MicroSoft EXCEL 2000 or later. Includes:  Model 1020 Expansion Card with Gage-Tektronix 500MHz Scope
Model1020SpecificationandMeasurementSoftware
Model 1020 System Cables
CalibrationModuleforTrise,TfallandDutyCycle  Model 1020B-C  This is a complete system including the computer. Includes the 1020B-K and the computer:  PCMinimumsuppliedcapability:  Pentium 4 1.2GHz, 128MByte RAM, 10GByte HDD, 3½ 1.44MByte Floppy Disk
CD-RW drive minimum
17" (less viewable) Color display  Model 1020A-K installed into the computer  MicroSoft WINDOWS 2000  1 of 16 bin select
Signal Lines  Start
Test  (A)  (B)  (C)  (D)  Handler Interface Option                    There are 16 signal lines, only one of which will
be active at any time, and this line indicates into which bin
to place the DUT.                    After the handler has received a bin signal and
performed binning, the handler can send a start test
signal (A) to the Model 1020 to indicate a test can begin.                    The Model 1020 will remove the bin signals as
soon as possible (B). The Model 1020 will begin testing.                    The handler must then remove or lower the Start
Test signal (C).                    When the measurements are completed and the
Start Test line is low, the bin signal will be set (D). This
sequence repeats for each DUT.                    Other handler interfaces are also available. For
example, the Extraon Handler with RS232 interface
software interface is available.  PRA Inc. reserves the right to make changes to the product contained in this data sheet in order to improve the design or performance and  to supply the best possible product. PRA Inc. reserves the right to make these changes without notice.  Revised 8/20/02
Oscillator Bench test System
 Oscillator Bench Test System
Model 1020B  TCXO, VCXO, TCVCXO,
Clock Oscillators
includes display of the output
waveform for TTL, CMOS,
PECL, ECL. Sinewave,
Clipped  Sinewave  Features:  • Easy to follow menus
• Specification Entry Program
• Measurement Program
• Waveform can be viewed and printed
• Statistical Plots of Data
• Operates in Windows 95/98
• Uses a standard PC
• Data written directly to EXCEL
• Uses any MicroSoft Windows          compatible printer
• Simple to attach test fixtures
• Test fixtures for various device types      Optimized for bandwidth
    Optimized for ideal loading
• Bandwidth of over 500MHz
• 4 Programmable Supplies ±10V range  Measurements:  • Frequency
• Start Time
• Start Voltage
• Supply Current
•Waveform:            Trise, Tfall, Duty Cycle
          Overshoot
          Pulse widths
          Vhigh, Vlow, VRMS, VP-P
• VCXO Pullability and Linearity
• Voltage to place on frequency
• Enable/Disable Function
•Warm-upTime
• Power Supply Sensitivity  Ideal for  -  Incoming inspection
In process oscillator setup
Manufacturing final test
Automatic Sorting
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Model 1020 Description

The Model 1020 is designed to provide fast, simple to do, and accurate measurements of TTL, CMOS, ECL, PECL, sinewave and low voltage 3V quartz clock oscillators. Oscillators with special functions such as VCXO functions, enable/disable pin functions, pretest of TCXOs, etc. can be tested. The Model 1020 is ideally suited for production final testing and incoming inspection. The specifications of the various oscillator types can be stored on the computer's disk to allow easy recall from a menu. The screen shows in a red background the tests that failed to allow easy analysis of nonconforming parts. The Model 1020B uses a Gage-Tektronix 85G 500MHz BW scope card. The Model 1020 occupies 2 full length positions in the PC but only one PCI slot in the computer. Software is Windows 95/98 32 bit code. The computer must have MicroSoft's EXCEL 2000 or 2002 spreadsheet program installed. The Model 1020 has three programs. DUT Waveform

The specification program permits entering and editing the specifications for the oscillators to be tested. The measurement program which operates in MicroSoft's EXCEL. The calibration program which is password protested. The Model 1020 containsa simple controller. With the continuing evolution of the PC and the multi media complexity, the Model 1020 does not depend on the PC for timing and control. The PC only sends commands like those sent on the GPIB or RS232 to any other instrument and receives back status and data. The control is via the COM port of the PC. The measured data can be printed as well as always being displayed on the screen. Measured data of up to 500 tested devices are accumulated to permit subsequent displaying or printing in statistical form. The data is stored in an EXCEL spreadsheet. The logic level thresholds are programmable to any value within the oscillator's supply voltage. The % settings are of oscillator output amplitude. The output Vhigh and Vlow measurements are done using the peak level mode or the histogram mode. The Model 1020 can test TCXOs. The pullability or deviation from several voltage points can be specified. Several data points can be measured and this frequency versus voltage function is then fit to the best straight line through the points. The error in %from the best fit is then computed and compared to user input limits. The Model 1020 can be supplied with numerous test fixtures. These are optimized for each type of oscillator. When a specification is selected, the type of fixture is also selected before testing begins. The standard Model 1020 fixtures do NOT havea Zero Insertion Force DIP/DIL oscillator test socket. These sockets do not have sufficient bandwidth and have far too muchC and L strays. The basic set of contacts will permit mounting the test sockets for DIP/DIL and the various SMT parts. One of these sockets could bea ZIF type socket with the subsequent measurement degradation. The Model 1020 is supplied witha calibration fixture to calibrate the oscilloscope, power supply set voltages and power supply currents. The counter can be operated referenced to an external standard. PRA will consider additional tests to the Model 1020. The Model 1020 is intended to continue to expand to meet the industries needs. For example a Tektronix TDS210 can be used for low frquency testing. The PRA Model 2470/2474 is an expanded version of the Model 1020. The Model 2470/2474 had more capable software, other scopes can be used, for example the Tekronix TDS7404, TDS3052, TDS820, etc.

  Model 1020 Specification
Counter:  
Frequency Accuracy: 0.5ppm per 6 months with internal standard
  External standard permitted
Reading Speed; 0.1ppm resolution for a 260mS reading time.
Testing speed: This will depend on frequency.
  Above 1MHz full waveform and frequency, 1.2 seconds
Minimumfrequency: 100 Hz
Maximum frequency: >800MHz (scope BW is 500MHz)
   
Waveform Measurements:  
Minimum Trise and Tfall: 300pS accuracy
  This will depend on the DUT and the test fixture selected.
Duty Cycle Accuracy: 0.15%
Oscillator Waveform Types: TTL/CMOS
  Low voltage square wave
  ECL/PECL
  Sine wave and Clipped Sinewaves
   
Test Power Supplies:  
DUT Power: ±10V up to 400mA. 5mV steps, 3mV accuracy
VCXO voltage Test Voltage: ±10V up to 100mA. 5mV steps, 3mV accuracy
Enable/Disable Test Voltage: ±10V up to 100mA. 5mV steps, 3mV accuracy
Load Circuit voltage: ±10V up to 100mA, 5mV steps, 3mV accuracy
   
Test Fixtures:  
Test fixtures: Specific fixtures for each type of device are required. This is
  predicated by the need for excellent lead length control and
  oscillator terminations for best accuracy.
  Supplied with DIP/DIL full and half size simulated TTL/
  CMOS fan out of 10 load fixture.
   
DUT Loads: The fixtures contains the loads. This minimizes the lead
  length.
   
Miscellaneous Requirements:  
PC Requirements: Windows 98/98SE required with MicroSoft EXCEL 2000
  or later.
  Serial COM port
  Single full length PCI slot for the waveform digitizer and a free
  full length position (no insertion into the PC bus is made)
  200watt power supply
Power Mains: Power will be obtained internally from the PC.
  No power mains connection required.
Printer: This is optional. Any printer compatible or supplied with MicroSoft
  Windows drivers will work.