Instruction Manual
Instruction Manual 8
Receiver
No. Parameter Requirement Comments
1 Passband Ripple 1dB Measured at baseband, 400Hz to 9.2kHz
2 Total Group Delay
75µsec (max)
Measured at baseband, 400Hz to 9.2kHz
3
Differential Group
Delay
TBD
Measured at baseband between the I and
Q channels, 400Hz to 9.2kHz
4 I Q Gain Imbalance 0.5dB Measured at baseband, 400Hz to 9.2kHz
5 I Q Phase Imbalance
≤ 2°
Measured at baseband, 400Hz to 9.2kHz
6
DC Offset
≤ 10% minimum
signal level
≅ 216µVrms at 14dB S/N
7
Output Noise
3 bits @
53.95µV/bit
≅ 432µVrms, Measured at the ADC input
8 Noise Figure 5dB min
9 Sensitivity -119dBm
≅ 0.25µVrms, Measured at the receiver input
10
Adjacent Channel
Rejection Ratio
80dB min
11
3
rd
order Intermodulation
Distortion
5dBm min
Interferer tones at F
0
± 50kHz and ± 100kHz
12 Image Rejection 100dB min
13 ½ IF Rejection 100dB min
14 Spurious Rejection 100dB min
15 Gain Variation 15dB Adjustable for site noise variations
16 ADC 16 bit Serial output, single ended, 52kHz sample rate
17 Dynamic Range 65dB 16bits – 3 noise bits = 12 bits, with a 14dB S/N
Transmitter
No.
Parameter Requirement Comments
1 Modulation
DC/MA
16QAM (2 level 8 phase) Digital
Channel/Multicarrier Architecture
2 Output Power 85 Watts Continuous
Average
DC/MA has a 10dB Peak to
Average Ratio
3 Output Impedance
50 Ω
3 Image Suppression -55dBc Sampling image measured at the
output of the transmitter.
4 Amplitude Response
<1.0dB
Measured across the 18MHz Tx
band
5 Intermodulation Products -60dBc DC/MA intermodulation
performance measured at the
output of the transmitter
6 Tuning Spacing 12.5kHz
7 Channel Frequency spread 18MHz
8 Occupied Bandwidth 20kHz
9 LO Phase Noise -85dbc/Hz @ 400Hz
–126dBc/Hz @ 10kHz
–134dBc/Hz @ 25kHz
Single sideband phase noise
10 LO Reference Spur
< -98dBc @ 12.5kHz
Maximum level for the 12.5kHz
reference spur