Aeroflex NAV 2000R Operation Manual page 37

Aeroflex Operation Manual
CHANNEL
This field steps the RF frequency output up and down in 500 Hz steps using the cursor control up and
down arrow keys.
TOTAL %MOD
This field allows changing all the percent modulation fields respective to one another. That is, changing
the total percent modulation will allow all current modulations to be changed equally, maintaining the
ratios between one another. For example, suppose the 30 Hz modulation is set to 30%, 9960 Hz
modulation is set to 20% and the ident tone 1000 Hz modulation is set to 10%. This indicates a total sum
of 60%. If the total percent modulation was changed for 30% to 30%, the new component percent
modulations would be 15%, 10% and 5% respectively.
TONE FREQ
Programs the 1000 Hz frequency. The user may specify a frequency from 10.0 Hz to 18000.0 Hz with
0.1 Hz step resolution.
MODULATION
Programs the desired 1000 Hz tone percent of modulation. This is a numeric field type and is
programmable from 0 to 99% in 0.01% steps. The "VALUE LIMITED TO MAXIMUM" error will be
displayed if the user tries to enter a percent modulation value greater than 99%.
IDENT MODE
Allows the user to specify how the identification tone is to be modulated. This is a toggle type field
containing three valid options: OFF, CODE AND TONE. A selection of OFF, the default setting,
commands the NAV 2000R to force the percent of modulation to 0%. A selection of CODE, causes the
NAV 2000R to generate the specified Morse Code identification string using audio ON/OFF keying. A
selection of TONE, commands the NAV 2000R to modulate a steady tone.
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IDENT CODE
The identification field contains the identification string transmitted. The field uses the alphanumeric field
entry method. The characters allowed in the string are 0 - 9 or A - Z. The maximum number of
characters allowed is six. The default for this field is the ASCII string "JCAIR". The "space" character
may be entered either at the beginning or end to allow entry of character strings shorter than six.
WORD RATE
Allows the programming of the repetition rate at which the Morse Code identifier is transmitted. The valid
range for the field is from 1 to 65 seconds programmable with 0.1 second step resolution. The default
setting is 30 seconds.
DOT TIME
Allows programming of the Morse Code dot time in milliseconds. The valid range is from 50 ms to 250
ms with 1 ms resolution. The default value is 150 ms.
NAV 2000R SIGNAL GENERATOR - REV. 0 – JULY 26, 2007 - PG 3-17