Exhibit B
6.2 Amplitude linearity of the Input Section
Transmission Channel
Common to More Than One
The ratio of carrier to each third order intermodulation product within the usable bandwidth of any transmission channel shall be at least 42 dB. This specification shall be met with two equal amplitude carriers present at the same input port, using any two different transponder channels. amplitude of each of the two carriers shall be 7.8 dB above the normal level for saturation to provide the equivalent loading of 12 channels.
7.0 SPURIOUS OUTPUTS
The
The total power resulting from the sum of all spurious signals measured at the input to all transmit antennas shall not exceed -55 dbw in any 1 MHz band in the frequency range 3700 Mliz to 4200 MHz.
The intermodulation product from
from a single carrier with the second harmonic of the receiver conversion frequency shall be at least 48 dB below the single carrier level with an incident flux density equal to the level that produced saturation in the output TWT with the transponder in the low gain condition.
For all frequencies, the total power resulting from the sum of all spurious signals (excluding harmonics of the communications signals) measured at the input to all transmit antennas shall not exceed -60 dBW in any 4 KHz band.
This specification shall be met with the illumination levels defined below and at frequencies anywhere in the usable bandwidth of any of the transmission channels.
single carrier
flux densities up to those 1) Single carrier illumination with
stated in 3.2.3. saturation as resulting in (Page I.B-8) The carrier is unmodulated for the measurements of in-band spurious outputs.
each
2) Illumination with two carriers per transmission channel,
carrier having a flux density which is 3 dB below those levels in 3.2.3. (Page I.B-8)
3)
than more
two
carriers when
the
total with Illumination illumination power resulting from all carriers within the frequency more below the level band of any transmission channel is 6 dB or given in 3.2.3. (Page I.B-8)
This section of the specification does not refer to intermodulation However, it does apply to spurious components due to multiple carriers. outputs, including unwanted products resulting from frequency conversion and generating stages (e.g., beacon and local oscillator), image frequencies, harmonics and leakage.
L
B-37