GENERAL INFORMATION
SPECTRAL PURITY
At RF levels up to +7 dBm :
Harmonics
Better than -30 dBc for carrier frequencies to 1 GHz;
Better than -27 dBc for carrier frequencies above 1 GHz.
Sub-harmonics
Better than -90 dBc to 1.35 GHz.
Non-harmonics
Better than -70 dBc to 1.35 GHz for offsets from the carrier
frequency of 3 kHz or greater.
Residual FM (FM off)
Less than 7 Hz RMS deviation in a 300 Hz to 3.4 kHz
unweighted bandwidth at 470 MHz.
SSB phase noise
Less than -116 dBc/Hz (typically -122 dBc/Hz) at an offset of
20 kHz from a carrier frequency of 470 MHz.
RF leakage
Less than 0.5
μ
V PD generated at the carrier frequency across a
50
Ω
load by a two turn 25 mm loop, 25 mm or more from any
part of the case.
FM on AM
Typically less than 100 Hz for 30% AM depth at a modulation
frequency of 1 kHz and a carrier frequency of 500 MHz.
Φ
M on AM
Typically less than 0.1 radian at a carrier frequency of 500 MHz
for 30% AM depth for modulation rates up to 10 kHz.
MODULATION MODES
Four modulation modes are available:
Single
FM, Wideband FM,
Φ
M, AM or pulse (optional).
Dual
Two independent channels of differing modulation type (e.g. AM
with FM).
Composite
Two independent channels of the same modulation type. (e.g.
FM1 with FM2).
Dual composite
A combination of Dual and Composite modes providing four
independent channels
(e.g. AM1 with AM2 and FM1 with FM2).
Phase modulation can be used instead of FM (but not
simultaneously).
Avionics
Consisting of ILS, VOR, Marker Beacon, ADF and Selcal.
ILS MODE
Sum of Depth of
Modulation (SDM)
Range:
0 to 99.9% in 0.1% steps representing the arithmetic sum of the
individual tone depths.
Selection:
By keyboard entry of data and variation by
⇑
/
⇓
keys and rotary
control.
Accuracy of
SDM:
±2% of setting for carrier frequencies up to 400 MHz.
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