Programming Information
23
3.3
Programming Interview
Before installing this board, please perform this “Programming Interview.” The
“User Setup” in
Section 3.3.1
provides an opportunity to enter critical setup pa-
rameters.
Section 3.3.2
enables you to evaluate your setup criteria to ensure that
it falls within the operational capabilities of the 4430-VE. If not, you should
contact your SBS Technologies representative to determine which module will
best serve your needs.
3.3.1
User Setup
Prior to programming the 4430-V/VN registers, certain setup parameters must
be provided by the user. The following section outlines the setup parameters and
associated boundaries that must be provided based on user requirements.
1.
What is the anticipated demodulator input carrier frequency?
2.
What is the input PCM code provided to the demodulator?
3.
What is the anticipated input data rate provided to the demodulator?
4.
Which input source and type will the demodulator be using?
5.
What is the minimum anticipated signal-to-noise ratio (Eb/No) of the signal
being provided to the demodulator? (This should be a result of link margin
analysis performed by the user.)
6.
What demodulator carrier signal tracking range is desired to obtain and stay
locked, given the effects of drift and doppler shift?
(Range: 6 KHz - 6 MHz)
Demod f
c
=
(Options: NRZ or BI
Φ
)
Demod PCM
=
(Range: 250bps - 1.5Mbps)
Demod DR
=
(Options: Ch. 1 or Ch. 2)
(Options: QPSK or BPSK)
Demod Source
=
Demod Input
=
(Range: values greater than -4dB)
E
b
/N
o
=
(Range for 4430-V: 27Hz to 390kHz)
(Range for 4430-VN: 0.75Hz to 9kHz)
Tracking Range =
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