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Bryan Mumford MicroSet Quick Start Manual

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Learning to Use MicroSet .................................................................... 2
Features ....................................................................................... 2
Quick Start .......................................................................................... 4
Measure beat error ...................................................................... 4
Measure the rate .......................................................................... 4
Using MicroSet .................................................................................... 7
Watch sensors .............................................................................. 8
The Beat Error Mode .................................................................... 9
The Time Mode ............................................................................ 12
Select the beat count ............................................................ 12
Read the results .................................................................... 12
Beep on completion .............................................................. 13
Blanking window ................................................................... 13
Time Mode Options ...................................................................... 14
Show error per day .............................................................. 14
Running Average ................................................................. 15
Speaker On/Off .................................................................... 16
Data Capture ........................................................................ 16
Dumping captured data ........................................................ 18
Paper tape output ................................................................ 19
The Accutron Mode ....................................................................... 22
The Tick Mode............................................................................... 23
Balance Wheel Amplitude ............................................................. 24
The Computer interface ............................................................... 25
Configuration ....................................................................................... 26
Beep On/Off .................................................................................. 26
Time Mode beat count .................................................................. 26
Blanking Window size ................................................................... 26
Time Mode display format ............................................................ 27
Oscillator calibration ..................................................................... 27
Technical Functions .............................................................................. 28
Technical Notes .................................................................................... 29
Accessories ......................................................................................... 30
Hardware Options ............................................................................... 30
Sample paper tape plots ..................................................................... 31
Summary of operations ....................................................................... 32
MicroSet Watch Timer

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Summary of Contents for Bryan Mumford MicroSet

  • Page 1: Table Of Contents

    MicroSet Watch Timer Table of Contents ——————————————————––—————————————————— Learning to Use MicroSet ..............2 Features ..................2 Quick Start ..................4 Measure beat error ..............4 Measure the rate ................4 Using MicroSet ..................7 Watch sensors ................8 The Beat Error Mode ..............9 The Time Mode ................

  • Page 2: Learning To Use Microset

    If you have a question about some aspect of MicroSet, first look to the Table of Contents. You should also feel free to call or email us at Mumford Micro Systems to ask questions about issues that are not clear to you.
  • Page 3 • An optional memory module can be added to capture watch data “in the field” for later analysis on a personal computer. • Optional temperature and barometric sensors allow you to analyze compensation in watches. Page 3...

  • Page 4: Quick Start

    Set the Level Control to the 9 o’clock position. Press the MODE button once. The screen says “Beat Error...” If the LED on MicroSet is not blinking, turn the Level control up until the LED blinks once on each beat.
  • Page 5 “Configuration - Display mode” for more details on these two choices. You can also set MicroSet to display how fast or slow the watch is in seconds per day. To do this, press the BEGIN button while MicroSet is measuring the rate.
  • Page 6 left edge of the display indicates how many readings have been incorporated in the current average. The rate readings will be much more stable because small variations will be a small fraction of the total. Page 6...

  • Page 7: Using Microset

    AC operation is recommended when you have easy access to it. You can leave the battery in when the unit is plugged in to the AC adaptor and, if the AC goes off, MicroSet will keep running on the battery. If you lose your AC adaptor you can use any one that provides 7 to 15 volts DC at 1000 milliamps.

  • Page 8: Watch Sensors

    It has the disadvantage of being very expensive. If you wish to use the Witschi watch holder we can probably get one for you and provide an interface to adapt it to MicroSet. Contact Mumford Micro for more information.

  • Page 9: The Beat Error Mode

    Beat Error... If the LED on MicroSet is not blinking, turn the Level control up until the LED blinks once on each beat. Then press the BEGIN button. The LED should now blink twice and then pause, twice and pause, etc.
  • Page 10 The next graph shows a watch with the Level control set too low. The readings are irregular because some beats are measured at different parts of the tick sound. This setup will produce jumpy, inaccurate readings in MicroSet. The Level control is set too low Even when the Level control is set correctly the Beat Error value may not be the same every time.
  • Page 11 error readings. And the beat error will change if the watch is measured in different positions. To terminate the Beat Error Mode you can hold down the MODE button or press the RESET button. Page 11...

  • Page 12: The Time Mode

    Press the MODE button until the LCD screen says: Time 10... This means MicroSet is in the mode to measure beat times, and is set to measure 10 beats. We will assume your watch is still mounted in the sensor after the Beat Error Mode. If you have not yet measured the beat error of the watch, do that first because the Beat Error Mode is used to properly set the Level control.

  • Page 13: Beep On Completion

    You can tell if the Blanking Window is set correctly for the watch you’re working on. The red LED on the front of MicroSet blinks on every beat. The LED is on while the Blanking Window is active, and goes off when MicroSet begins to listen for the next tick.

  • Page 14: Time Mode Options

    In other words, MicroSet will now tell you how fast or slow the watch is. If the value shown is positive, the watch is fast. If the value is negative, the watch is slow.

  • Page 15: Running Average

    As you enter the target rate in this way, if MicroSet has been displaying the rate as Beats Per Hour, the PLUS and MINUS keys will change the proposed rate by an odd value (.09 BPH). This is normal. If you cannot get MicroSet to display the exact rate you want, choose the closest value.

  • Page 16: Speaker On/Off

    MicroSet hold the timer off the table and let the sound out. In fact, the speaker is louder when MicroSet is sitting on a work table than it is if you turn it over and face the speaker towards you. However, the speaker will be loudest when sitting on a hard, reflective surface.
  • Page 17 Even if you have a computer handy to use with MicroSet, you don’t need to tie it up with monitoring a watch. The computer can be free for other things and MicroSet can monitor the watch all by itself.

  • Page 18: Dumping Captured Data

    You can capture more than one “session” of data with the Capture function. You can stop the Time Mode (or use any other function of MicroSet), or set up on a different watch, and then Capture more data. If you wish to do this, do NOT turn the Data Capture off.

  • Page 19: Paper Tape Output

    To use the paper tape printer, plug the special data cable (available from us) into the MicroSet Data Out jack at the end of the timer. This is the jack normally used by the computer interface. MicroSet must be in the Time Mode and generating readings. Press the BEGIN key to access the Time Mode Options, and press BEGIN as many times as necessary to reach the Paper Tape option.
  • Page 20 If the watch is running at exactly the correct rate, the lines will be straight. After 100 beats, MicroSet will print the current rate of the watch at the top of the tape. In this example, it printed “+25 Sec”, which means the watch is 25 seconds per day fast.
  • Page 21 But because MicroSet allows you to specify any arbitrary rate as the correct rate, you can get the lines to run straight simply by telling MicroSet that the current rate is the correct rate. In other words, when you first enter the Paper Tape Mode, simply accept the last rate reading without adjusting it to be the known correct rate.

  • Page 22: The Accutron Mode

    Place the watch so the tuning fork is at the center of the sensor. Turn the MicroSet level control all the way up and the LED should come on and stay on. This means the watch is running and MicroSet can sense the tuning fork. Press the BEGIN button and MicroSet will say: Blocks: 5...

  • Page 23: The Tick Mode

    Tick Mode —————————————————————————————————————— MicroSet includes a function to transmit digital information about the watch tick to the Windows Interface Program. To use this Tick Mode, you must have version 3 of the Interface Program. If you purchased the optional Balance Wheel Amplitude feature you will not have a Tick Mode in your timer.

  • Page 24: Balance Wheel Amplitude

    The Balance Wheel Amplitude Mode works like the Tick Mode except that it uses an optional analog to digital converter inside MicroSet to display a more accurate view of the tick sound. This more accurate view allows the Windows interface program to calculate and display the balance wheel amplitude much more accurately.

  • Page 25: The Computer Interface

    And the software can be set to work for any beat time, so you need not interpret the displays differently for unusual beat watches. The computer interface can be added to any MicroSet. Please call for details and availability. Page 25...

  • Page 26: Configuration

    This setting lets you store the default duration for the Blanking Window. The Blanking Window is the feature in the MicroSet Time Mode that allows it to ignore sounds that occur between proper ticks. Because MicroSet can measure watches as fast as 36,000 BPH and clocks as slow as 30 seconds per beat, there is no one setting for the Blanking Window that will serve all timepieces perfectly.

  • Page 27: Time Mode Display Format

    MINUS button. When the value you want is displayed, you must press the BEGIN button if you want MicroSet to memorize it. When you do, the LCD screen will show “OK!” and the trim value will be stored in permanent memory for future use.

  • Page 28: Technical Functions

    Technical Functions —————————————————————————————————————— There are several “technical functions” built into MicroSet that are not necessarily related to timing watches. These functions are put in as utilities to help the experimenter, or to extend the usefulness of the timer. Not all timers will have all functions. To access the technical functions, hold down the BEGIN button when you turn on the timer.

  • Page 29: Technical Notes

    Beats Per Hour. Others may prefer Seconds Per Beat. Limits in the oscillator calibration MicroSet is tuned to a GPS reference signal when we assemble it to get the greatest accuracy from the crystal timebase. When MicroSets are assembled, the oscillator components are hand selected to arrive at a frequency that’s within one or two parts per...

  • Page 30: Accessories

    • Software interface for personal computers Hardware Options —————————————————————————————————————— There are several optional features that can be added to the MicroSet hardware. These are listed below. Contact us for further details. • Built-in beat amplifier • Temperature and Atmospheric sensor •...

  • Page 31: Sample Paper Tape Plots

    Typical errors as revealed by paper tape printer A damaged tooth on the escape wheel Irregular transmission or dirty escapement Balance is isochronous but not in poise Balance is not isochronous when watch when watch is turned is turned Faulty escapement or damaged pallet Balance is knocking stone Escape wheel is out of round...

  • Page 32: Summary Of Operations

    Show error/day: Press PLUS to enter the correct rate of the timepiece or press MINUS to disengage Error Per Day calculation. MicroSet will guess the correct Target Rate. If it’s right, press BEGIN. If it’s not right, press MINUS to display the last value measured, then press PLUS or MINUS to adjust it.

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