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- The first thing you should do when you run CW is to calibrate the code speed
- to suit the clock speed for your computer and to account for any memory
- resident programs which you have loaded. Each time you change the memory
- resident program enviroment you will need to recalibrate code speed. When
- doing so use the following procedure:
-
- 1. Use the <P>arameters command and the <S>peed subcommand to set the
- code speed to a multiple of 10 words per minute (20 or 30 are most
- convenient). Set the send speed, character speed, and word speed to the same
- value.
-
- 2. Select the <U>tilities command on the main menu and the <S>peed
- test subcommand.
-
- 3. Using a clock or watch with a sweep second hand, count the number
- of times the standard word PARIS is sent in exactly one minute. If the
- number matches the code speed set in step 1, then no further calibration
- is necessay. The count is not automated since the counting process would
- consume time and thus render the result innacurate.
-
- 4. If the number of words and code speed do not match, then use the
- <U>tilities command and <T>iming subcommand to set the timing constant.
- Increasing the number slows the send speed down, and vice versa. Using a
- PC with a clock speed of 4.77 MHz. and with no memory resident programs
- installed, the author has found that a timing factor of about 1075 produces
- the correct speed.
-
- 5. Repeat steps 1-4 until the code speed shown at the bottom of the
- screen matches the number of words sent in one minute.
-
- In counting the number of times PARIS is send, be sure to include the
- last word space as part of the last PARIS. In other words, if you are
- attempting to calibrate at 20 words per minute, start timing when the first
- word is sent and stop timing when the 21st word starts.
-
- On my Zenith Z-150 running at 4.77 MHz. and with no memory resident
- programs installed, the timing factor is about 1080. With several memory
- resident programs installed, the timing factor decreased to about 620.