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{
"metadata": {
"name": "",
"signature": "sha256:3cc9d2c4c0d6a493cdaa2dbc9383ef800411a8ab69ddf373e977319372599f8f"
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"worksheets": [
{
"cells": [
{
"cell_type": "heading",
"level": 1,
"metadata": {},
"source": [
"Chapter6 - Digital Frequency Meter"
]
},
{
"cell_type": "heading",
"level": 2,
"metadata": {},
"source": [
"Example 6.17.1 - page6-26"
]
},
{
"cell_type": "code",
"collapsed": false,
"input": [
"# Desired gate time\n",
"#Given data :\n",
"r=0.1 #in Hz\n",
"D=1/r #in seconds\n",
"print \"The desired gate time, D = \", D,\" seconds\""
],
"language": "python",
"metadata": {},
"outputs": [
{
"output_type": "stream",
"stream": "stdout",
"text": [
"The desired gate time, D = 10.0 seconds\n"
]
}
],
"prompt_number": 2
},
{
"cell_type": "heading",
"level": 2,
"metadata": {},
"source": [
"Example 6.17.2 - page6-27"
]
},
{
"cell_type": "code",
"collapsed": false,
"input": [
"# Error in measurement\n",
"f1=1.0 # in Mhz\n",
"f2=200.0 #in kHz\n",
"per=(200*10**-3)*100 # percentage error that printlay may indicate 4 micro seconds or 6 micro seconds\n",
"per1=(1/50.0)*100 #percentage error after 10 times improvement\n",
"print \"Display may indicate 4 us or 6 us, percentage error is \", per,\" %\"\n",
"print \"Percentage error after 10 times improvement is \", per1,\" %\""
],
"language": "python",
"metadata": {},
"outputs": [
{
"output_type": "stream",
"stream": "stdout",
"text": [
"Display may indicate 4 us or 6 us, percentage error is 20.0 %\n",
"Percentage error after 10 times improvement is 2.0 %\n"
]
}
],
"prompt_number": 3
},
{
"cell_type": "heading",
"level": 2,
"metadata": {},
"source": [
"Example 6.17.3 - page6-27"
]
},
{
"cell_type": "code",
"collapsed": false,
"input": [
"# Measurement Accuracy\n",
"#Given data :\n",
"f=400.0 #Hz\n",
"time_accuracy=10**-8 # seconds\n",
"display_accuracy=1 #(+ve or -Ve)\n",
"t=10 # seconds\n",
"period=1/f*10**3 #ms\n",
"Accuracy= 1+((period)/10) #ms\n",
"print \"accuracy is \u00b1\",Accuracy,\" ms\""
],
"language": "python",
"metadata": {},
"outputs": [
{
"output_type": "stream",
"stream": "stdout",
"text": [
"accuracy is \u00b1 1.25 ms\n"
]
}
],
"prompt_number": 7
}
],
"metadata": {}
}
]
}
|
