Marker Beacon Mode Field Definition - Aeroflex NAV 2000R Operation Manual

Aeroflex Operation Manual
DASH TIME
Allows programming of the Morse Code dash time is milliseconds. The valid range is from 150 ms to 750
ms with 1 ms resolution. The default setting is 450 ms.
SPACING DOT/DASH
Programs delay time between dots and dashes within Morse Code characters. The valid range is from
50 ms to 250 ms with 1 ms resolution. The default setting is 150 ms.
SPACING CHARACTER
Programs delay time between Morse Code characters. The valid range is from 150 ms to 750 ms with 1
ms resolution. The default setting is 450 ms.

3.5.11 MARKER BEACON MODE FIELD DEFINITION

The Marker Beacon mode is entered by pressing and releasing the MKR mode select button. This mode
is used to test and align Marker Beacon equipment by modulating one user specified tone and simulating
one of three Marker Beacons: inner, middle, or outer. The user may change the frequency and
modulation and also may specify either a constant or pulsed mode of modulation. If the user selects
CODE, the system will pulse the Marker Beacon modulation, on and off, at a rate defined by the beacon
selected.
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 or uV/mV units. DBm numbers are entered using the ENT key. Microvolts
and millivolt numbers may be entered using the uV and mV keys (STO/RCL) respectively. The default
displayed units (normally dBm) may be changed by pressing the SEL key and then pressing either the
uV, mV, or dBm keys.
TONE FREQ.
This field sets the Marker Beacon modulation frequency and allows changes to valid entry ranges within
each of the three Beacon simulations. The Beacon frequency range may be reprogrammed to any value
ranging from 10.0 Hz to 18000.0 Hz in 0.1 Hz steps. The outer Beacon frequency default setting is 400
Hz, middle Beacon 1300 Hz., and the inner Beacon is 3000 Hz. Any frequency, other than the Marker
Beacon's default setting, will cause the VAL flag to enunciate.
BEACON MODE
This field specifies which Marker Beacon type to simulate and is a discrete toggle type field with three
available selections: OUTER, MIDDLE, and INNER. The default for this value is OUTER.
FREQ. MHz
This field allows the RF frequency to be programmed.
MODULATION
This field programs Marker Beacon modulation percentage. Only one Marker Beacon frequency is
modulated at a time. This is a numeric field type and is programmable from 0 to 99.0% in 0.01% steps.
NAV 2000R SIGNAL GENERATOR - REV. 0 – JULY 26, 2007 - PG 3-18