Technical data

Aeroflex Operation Manual
NAV 2000R SIGNAL GENERATOR - REV. 0 – JULY 26, 2007 - PG 3-12
90 Hz %MOD
Programs the modulation percentage of 90 Hz tone. This is a numeric field type and is programmable
from 0 to 99% in 0.01% steps. The default for this field is 20%. The "VALUE LIMITED TO MAXIMUM"
error is displayed if a 90 Hz modulation percentage causes the total modulation percentage, the sum of
percent modulation of the 90 Hz, 150 Hz, and the ident tone, to exceed 99%. In this case, the system
limits the 90 Hz modulation percentage to a value that forces all modulation percents to total 99%.
A current value for the DDM field will be computed and the field will be updated for the newly entered 90
Hz percent modulation data. If the sum of the 90 and 150 Hz percent modulation fields does not add to
40, the DDM field will display --- in the field and the modulation fields will be highlighted by an * on both
sides.
150 Hz FREQUENCY
Programs the 150 Hz frequency. A frequency from 120.0 Hz to 180.0 Hz in 0.1 Hz steps may be entered.
Any frequency, other than the default setting of 150.0 Hz, will cause the VAL flag to enunciate.
150 Hz %MOD
Programs the modulation percentage for 150 Hz tone. This is a numeric field type and is programmable
from 0 to 99% in 0.01% steps. The default for this field is 20%. The "VALUE LIMITED TO MAXIMUM"
error will be displayed if the 150 Hz modulation percentage is set to a value which causes the total
modulation to be more than 99%. In this case, the system limits the 150 Hz modulation field to a value
that forces all modulation percents to total 99%.
A current value for the DDM field will be computed and the field will be updated for a newly entered 150
Hz percent modulation data. If the computed DDM exceeds .400, the DDM field will display --- in the
field. Also, the LEFT/RIGHT field will be changed to reflect a newly entered percent of modulation field.
1020 Hz FREQUENCY
Programs the 1020 Hz frequency. A frequency from 10.0 Hz to 18000.0 Hz in 0.1 Hz steps may be
entered. Any frequency, other than the default setting of 1020.0 Hz, will cause the VAL flag to enunciate.
1020 Hz %MOD
Programs the 1020 Hz tone modulation percentage. This is a numeric field type and is programmable
from 0 to 99% in 0.01% steps. An entry of 0% modulation commands the NAV 2000R not to modulate
the ident tone. The VAL flag will be set when any value, other than the default value of 20%, is entered.
The "VALUE LIMITED TO MAXIMUM" error will be displayed if a 1020 Hz modulation percentage causes
the total modulation to be more than 99%. In this case, the system will limit the 1020 Hz modulation to a
value that causes all modulation percents to total 99%. If a 90 or 150 Hz modulation percentage causes
the total modulation percentage to exceed 99%, the system will adjust the desired 1020 Hz modulation
percentage to realize a total modulation percentage of 99%.
PHASE SHIFT
Allows alteration of the phase between the 90 Hz and 150 Hz tones. The phase may be specified
ranging from 0 to 359.99 degrees in 0.01 degree steps. Any phase shift value, other than the default
setting of 0 degrees, will cause the VAL flag to enunciate.