Technical data

Glossary
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S:\hp11807a\OPT001\USRGUIDE\BOOK\chapters\glossary.fb
key (USER keys) Keys refer to any of the
push buttons on the front panel of the test
set. The USER keys are a specific grouping
of keys labeled k1 tok5 which perform the
associated numbered function in the action
field located in the upper right of the screen.
The USER keys are user programmable.
knob The large tuning dial for cursor
control located in the center of the test set
front panel. This knob is rotated to position
the cursor on the screen and then pressed to
select the particular field or function.
library A collection of the names of all of
the parameters, pass/fail limits, and tests in
the test software. The test software and the
test set’s firmware use the library, test
software program code file, and a procedure
to run a customized application program. A
library is stored as a file on a memory card
or other mass storage with its associated
procedure files.
Location Where to retrieve or save a
particular testing procedure, for example, to
a disk, card, RAM, or PC.
LPF Low-Pass Filter. A filter that
increasingly rejects signals as their
frequency increases towards, and then is
greater than, a certain cutoff frequency. In
the test set, audio low-pass filters are used
to reduce the level of high frequency signals
during certain measurements.
measurement A series of calculations on
data measured by the test set. These
calculations provide a value to be compared
against pass/fail limit values that verify the
performance of the unit-under-test.
Main Menu The screen accessed by
pressing the TESTS key, or k5 (Main
Menu). It is used to customize and execute
(run) automated testing.
Also referred to as the “TESTS” screen.
menu The test set’s screen displays
various tasks to be selected with the cursor
control knob or the USER keys ; this display
is the menu.
message The upper portion of the test set’s
screen is reserved for messages and
prompts. Messages give an indication of the
status of the test set, for example, System
initialization.
OTP One Time Programmable (OTP)
refers to a CARD on which code or date
may only be stored once; similar to ROM.
The HP 11807A/E software is shipped on
an OTP memory card.
parameters Entries you make for
calibration data, radio characteristics, or test
customization. They give you flexibility in
the way you use the software. Default
values for parameters are present in the
software.
pass/fail limits Pass/fail limits are the
names of criteria verifying the performance
of the unit-under-test. Usually, the
associated measurement value must fall
within the HI/LO limits of pass/fail values
to verify performance of the unit-under-test.
Default values in the test software have
been derived from standard methods of
measurement or from the unit-under-test
requirements.