Adf Mode Field Definitions - Aeroflex NAV 2000R Operation Manual

Aeroflex Operation Manual
90 Hz %MOD
This field programs the modulation percentage of the 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 40%. The "VALUE LIMITED TO
MAXIMUM" error will be displayed if the entered 90 Hz modulation percentage causes the total
modulation to be more than 99%. In this case, the system limits the 90 Hz modulation percentage such
that total modulation percentage is 99%.
A current value for the DDM field will be computed and the field will be updated for a newly entered 90 Hz
modulation percentage. If the computed DDM exceeds .800, the DDM field displays --- in the field. Also,
the UP/DOWN field will be changed to reflect the newly entered modulation percentage.
150 Hz FREQ
This field 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
This field programs the desired percent of modulation of the 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 40%. The "VALUE LIMITED
TO MAXIMUM" error will be displayed if the entered 150 Hz modulation percentage causes the total
modulation to exceed 99%. In this case, the system limits the 150 Hz modulation percentage so that the
total modulation percentage is 99%.
A current value for the DDM field will be computed and the field will be updated for a newly entered 150
Hz modulation percentage. If the computed DDM exceeds .800, the DDM field will display --- in the field.
Also, the UP/DOWN field will be changed to reflect the newly entered modulation percentage.
PHASE SHIFT
Alters the phase between 90 and 150 Hz tones. A 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.
3.5.10 ADF MODE FIELD DEFINITION
ADF test mode is entered by pressing and releasing the ADF mode button. This mode is used to test and
align ADF receivers. The ADF mode parameter fields are described in this section.
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RF LEVEL
This field allows the RF level to be programmed. The RF level may be programmed with 1/10th dBm
resolution using either dBm of uV/mV units. Dbm numbers are entered using the ENT key. Microvolt and
millivolt numbers are entered using the uV and mV keys (STO/RCL) respectively. The default display
units (normally dBm) may be changed by pressing the SEL key and then pressing either the uV, mV or
dBm keys.
FREQ. MHZ
This field allows the RF frequency to be programmed. The RF frequency may be programmed in
0.00001 Mhz steps within the NAV 2000R frequency range of 0.15000 mhz to 450.00000 mhz.
NAV 2000R SIGNAL GENERATOR - REV. 0 – JULY 26, 2007 - PG 3-16