IGEP
TM
RADAR SENSOR ORION Hardware Reference Manual
ISEE 2007
S.L. All rights reserved, IGEP™ is a registered trademark from ISEE 2007 S.L. The following is provided for informational purposes only.
DOCUMENT FROM ISEE 2007 S.L. Ref: MAN-PR-RADR0010-RA1-001
13
5.5
JC1 POWER SUPPLY INTERFACE
JC1 is SAMTEC P/N: SSM-107-L-DV and is used for internal assembly test and is delivered with
only pin 2 and pin 14 operational. The rest of pins are only available on demand. You can find a
complete description in EXPANSIONS section of this manual.
Signal Name
Pin #
Description
5VPW
JC1:2
+5V
DC
POWER SUPPLY
GND
JC1:14
GROUND CONNECTION
Table 8 : Power supply pins in JC1 connector
5.6
DDS MODULATOR INTERFACE
IGEP
™
RADAR SENSOR ORION includes a complete Direct Digital Synthesizer acting as the
frequency modulator of the radar system.
This section describes the main modulation parameters and the programming registers of DDS
Modulator that can be programmed through SPI Link on JC2 or JC3 connectors. The next figure
is a typical example of a basic triangular sweep modulation:
Figure 6: TRIANGULAR DDS MODULATION PARAMETERS
5.6.1
DDS MODULATOR BASIC PARAMETERS AND EQUATIONS
FBASE
, BASE FREQUENCY: This is the reference oscillator Frequency in MHz, that in this
RADAR has been fixed to F
0
[MHz]=50.
FSTART
, START FREQUENCY: This is the DDS parameter that fixes the RF output frequency
in which the PLL will force to start the modulation sweep.
RF OUTPUT FREQUENCY START (F
1
[MHz]) is obtained from FSTART by the following equation:
F
1
[MHz]=2048*FSTART[dec]*F
0
[MHz]/2^
24
(I)
example: F
1
=24GHz=24000MHz
→
FSTART=3C0000 [hexa] = 3932160 [dec]
NOTE: Careful has to be taken to work in hexadecimal and/or decimal format. The use of
hexadecimal format is needed because programming the DDS use this format.
