Intermec IP2L Basic Reader Interface Programmer's Reference Manual (BRI versio - Page 102

FIELDSTRENGTH, FIELDSEP Attribute Values, Numerical Values and Their Equivalent dB Values

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Chapter 4 - BRI Commands The following table shows the values that are allowed for the FIELDSEP attribute. FIELDSEP Attribute Values Common Name Space Comma Colon Semicolon Tab Caret Tilde BRI Representation "\t" "^" "~" The following example shows how to change the BRI output character to a tab: ATTRIB FIELDSEP="\t" FIELDSTRENGTH Controls the RF power level for each antenna. You can specify a different value for each antenna between 15 and 30 dB. Default is 30 dB. Two input modes are supported for the FIELDSTRENGTH attribute, you can enter a FIELDSTRENGTH value using a numeric scale or dB value. It is recommended that you use a dB value. The numeric scale is deprecated and is supported for backward compatibility of older versions of the BRI. To enter values in dB, you must follow the numerical values with "dB". Valid values are 15 to 30 dB. For example: OK>ATTRIBUTE FIELDSTRENGTH=30dB, 15dB, 16dB, 25dB Reducing the signal by 3dB is equivalent to cutting the output power in half. For example, 27 dB is half as strong as 30 dB, and 24 dB is half as strong as 27 dB. 30 dB represents 1 watt of output power. Some regulatory domains limit the reader output power to less than 1 watt. If a reader is configured for one of these domains, entering 30 dB will result in maximum output power which will be less than 1 watt. For entering in a numerical scale, the valid values are 25 to 100. You enter in these values in increments of 5. If you enter in values that are not multiples of 5, the value that was entered will be rounded down to the nearest multiple. Every 5 steps on the numerical scale is equivalent to 1 dB as shown in the following table. Numerical Values and Their Equivalent dB Values Numeric Value 25 30 35 40 45 50 Equivalent dB value 15 dB 16 dB 17 dB 18 dB 19 dB 20 dB 90 Basic Reader Interface Programmer Reference Manual

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Chapter 4 — BRI Commands
90
Basic Reader Interface Programmer Reference Manual
The following table shows the values that are allowed for the FIELDSEP attribute.
The following example shows how to change the BRI output character to a tab:
ATTRIB FIELDSEP=“\t”
FIELDSTRENGTH
Controls the RF power level for each antenna. You can specify a different value for
each antenna between 15 and 30 dB. Default is 30 dB.
Two input modes are supported for the FIELDSTRENGTH attribute, you can enter
a FIELDSTRENGTH value using a numeric scale or dB value. It is recommended
that you use a dB value. The numeric scale is deprecated and is supported for
backward compatibility of older versions of the BRI.
To enter values in dB, you must follow the numerical values with “dB”. Valid values
are 15 to 30 dB. For example:
OK>ATTRIBUTE FIELDSTRENGTH=30dB, 15dB, 16dB, 25dB<CRLF>
Reducing the signal by 3dB is equivalent to cutting the output power in half. For
example, 27 dB is half as strong as 30 dB, and 24 dB is half as strong as 27 dB. 30 dB
represents 1 watt of output power. Some regulatory domains limit the reader output
power to less than 1 watt. If a reader is configured for one of these domains, entering
30 dB will result in maximum output power which will be less than 1 watt.
For entering in a numerical scale, the valid values are 25 to 100. You enter in these
values in increments of 5. If you enter in values that are not multiples of 5, the value
that was entered will be rounded down to the nearest multiple. Every 5 steps on the
numerical scale is equivalent to 1 dB as shown in the following table.
FIELDSEP Attribute Values
Common Name
BRI Representation
Space
“ ”
Comma
“,”
Colon
“:”
Semicolon
“;”
Tab
“\t”
Caret
“^”
Tilde
“~”
Numerical Values and Their Equivalent dB Values
Numeric Value
Equivalent dB value
25
15 dB
30
16 dB
35
17 dB
40
18 dB
45
19 dB
50
20 dB