Decatur Electronics SI-2 User manual

1
SYSTEM INTERFACE
SI-2™ AND SI-ARCADE™
Technical Manual
Decatur Electronics, Inc.
715BrightStreet
Decatur,Illinois62522
US 800.428.4315
Intl 217.428.4315
Fax[phone]
www.decaturradar.com
Updated10/02
Proprietary Information — not for copy
or distribution unless authorized
in writing by Decatur Electronics, Inc.
Certified ISO 9001

2
TABLE OF CONTENTS
This manual is divided into two sections: SIArcade, and SI-2
SI ARCADE MODEL
Introduction to the System Interface (SI Arcade)™Unit ………………………………….................. 6
Standard Package .............................................................................................................................. 6
Default Settings ................................................................................................................................. 6
Options ............................................................................................................................................. 6
Operation ....................................................................................................................6
SI Arcade Antenna Operation and Circuitry ……………………………………………...................7
Mechanical Drawings ...................................................................................................8
Exploded View .........................................................................................................10
Component Placement Map ................................................................................................................12
Block Diagram .............................................................................................................15
Schematics .......................................................................................................................16
Microwave Module ..............................................................................................................20
Signal Processing Printed Circuit Board (PCB) S780-100 ..............................................................21
Preamplifiers ............................................................................................................................. 21
Analog to Digital (A/D) Converter .................................................................................................21
Digital Signal Processing ...................................................................................................22
Second Crystal Check .............................................................................................23
Reset Circuit .....................................................................................................................23
Power Supply .............................................................................................................23
Flash Memory ...................................................................................................................24
Low Voltage and RFI Settings .......................................................................................................24
Serial Communications ........................................................................................................24
SI Arcade Antenna Specifications ...............................................................................................25
Processor ....................................................................................................................................25
General .......................................................................................................................................25
Mechanical .................................................................................................................................25
Accuracy ...................................................................................................................................25
DB-9 Connector Pinout ................................................................................................................25
Parts List ………………………………………………………………………......................................... 26

3
SYSTEMINTERFACEDIRECTIONAL(SI-2)MODEL
Introduction to the System Interface 2 Directional (SI-2)™Unit ………………………….............29
Standard Package .............................................................................................................................29
Default Settings ………………………………………………………………………............................. .29
Options ……………………………………………………………………………..............................29
System Interface (SI-2)Antenna Operation and Circuitry ………………………............………...............30
Mechanical Drawings ..........................................................................................................................31
Exploded View .....................................................................................................................34
Block Diagram .........................................................................................................................................36
Schematics ...................................................................................................................37
Component Placement Maps ....................................................................................................41
Microwave Module ...........................................................................................................44
Signal Processing Printed Circuit Board (PCB) S780-100 ..................................................................45
Preamplifiers ............................................................................................................................. 45
Analog to Digital (A/D) Converter .................................................................................................45
Digital Signal Processing ...................................................................................................46
Second Crystal Check .............................................................................................47
Reset Circuit .....................................................................................................................47
Power Supply .............................................................................................................47
Flash Memory ...................................................................................................................48
Low Voltage and RFI Settings .......................................................................................................48
Serial Communications ........................................................................................................48
Antenna Specifications ………………………………………………………………..........49
Processor ................................................................................................................49
General .............................................................................................................49
Mechanical ................................................................................................................49
Accuracy ............................................................................................................49
DB-9 Connector Pintout .....................................................................................................49
Output Rate ………………........................................................……………...................50
Power ...................................................................................................................50
Angle and Direction ......................................................................................................50
Selectable RS232 Output Protocols ..................................................................................50
Control Functions ..................................................................................................................51
Software Installation Instructions ............................................................................................51
Software Configuration Instructions ........................................................................................52
Parts List ………………………………………………………………………………………….................57
SI-2 Option Card (S790-6) Operation and Circuitry (ForBoth SIArcade and SI-2) ..................................59
Block Diagram ....................................................................................................................................60
Schematics ..........................................................................................................................................61
Component Placement Maps ................................................................................................................64
SI-2 Option Card Circuitry Description ............................................................................................68
Input Protection ..........................................................................................................................68
Voltage Monitoring ......................................................................................................................68
Main Power ................................................................................................................................68
Post Filtering and Fusing ..............................................................................................................68
Theory .......................................................................................................................................68
Parts List ..............................................................................................................................................69

4
Troubleshooting ………………………………………………………………………………......................70
Testing .......................................................................................................................................................71
Safety ...................................................................................................................................................71
Microwave Module Tests ......................................................................................................................72
Antenna Tuning Procedure ..............................................................................................................72
Gunn Oscillator Transmit Frequency ..................................................................................................72
K-Band Mixer Diode Voltage Adjustment ......................................................................................73
Signal Processing PCB Tests ..................................................................................................................74
Display PCB Tests ...............................................................................................................................74
Audio PCB Tests ...................................................................................................................................74
Recommended Test Equipment ..............................................................................................................75
Standard Servicing Equipment .........................................................................................................75
Constructed Test Equipment .................................................................................................................77
Anechoic Chamber .........................................................................................................................77
Equipment Manufacturers ...........................................................................................................................78
Appendix A Table of OEM Supported Settings .....................................................................................79

5
SI ARCADE

6
SIARCADEINTRODUCTION
The System Interface Arcade (SI Arcade) is a stationary mounted sports radar system for K-band antenna
operation. The basic SI Arcade processor board is included in the K-band antenna housing. It displays the
fastest speeds of the event, which are from processed raw Doppler signals that are generated by the micro-
wave transceiver and is specifically designed for tracking the speed of baseballs in an arcade environment.
The SIArcade includes an RS232 communications port for operation with standard numeric display signs.
The SI Arcade software detects targets within the speed ranges of 25 – 125 mph (40 – 200 kph).
StandardPackage
K-band antenna
Test tuning fork
15.5 ft power/serial communications cable with an attached DB-9 connector with a cigar type plug for exter-
nallysupplied power
One-year full warranty
Default Settings
Continuous mode on power up
Units of measure set to mph (available in kph)
Speed range set to 25 – 125 mph
Data output format set to standard ASCII characters (hundreds, tens, ones, carriage return)
Options
Units of measure set to kph
Operation
The SI Arcade’s radar beam is always active as long as the unit has power. The unit displays the fastest
speed for about 5 seconds, then clears the speed. After the speed clears, the unit is ready for another speed.

7
SIARCADEANTENNAOPERATIONAND CIRCUITRY
MECHANICALDRAWINGS............................. 8
EXPLODEDVIEW .............................................. 10
COMPONENTPLACEMENT MAP................. 12
BLOCK DIAGRAM ........................................... 15
SCHEMATICS .................................................... 16
MICROWAVE MODULE ................................... 20
SIGNALPROCESSING PCB............................. 21
ANTENNASPECIFICATIONS .......................... 25

8

9

10

11

12

13

14

15
5 5
4 4
3 3
2 2
1 1
D D
C C
B B A A
DRAWN: K. T. SMITH NOV 2, 1998
E
DECATUR ELECTRONICS, INC.
S780-100H-0-SCH
TUESDAY, JULY 11, 2000 1 5
A
715 BRIGHT ST. DECATUR, IL 62522 (c) COPYRIGHT DEI 1998 JUGS MOTHERBOARD
C S780-100-0 SEE PAGE 3
Size Scale
DWG NO Rev
Sheet of
Changes from last Revision
CONFIDENTIAL AND PROPRIETARY INFORMATION. NOT FOR USE, COPY, OR DISTRIBUTION, IN WHOLE OR IN PART, EXCEPT BY WRITTEN AUTHORIZATION.
PCB NUMBER PCB REV.
A/D INTERFACE GVP A/D
RFSO
DRO
SCLKO
TFSO
DTO
AD_CLK
AD_ENA
AD_LR
HIGHSPEED
DSP GVP DSP
PWR_SW
KEY0
KEY1
KEY2
KEY3
AUDIO
RFI
ANT_ENA
TRIG
DISP_SDI
DISP_SDO
DISP_CLK
AUX_OUT
RX
TXRFSO
DRO SCLKO
TFSO DTO
AD_CLK
AD_ENA
AD_LR PWR_HOLD
ANT_ENA
LOW_V HIGHSPEED
POWER GVP POWER
PWR_HOLD
ANT_ENA
LOW_V
PWR_SW
I/O INTERFACE GVP I/O
TX
RX AUX_OUT
DISP_CLK
DISP_SDO
DISP_SDI TRIG
ANT_ENA RFI AUDIO KEY0 KEY1
KEY2
KEY3
PWR_SW

16
5 5
4 4
3 3
2 2
1 1
D D
C C
B B A A
DRAWN: K. T. SMITH NOV 2, 1998
E
DECATUR ELECTRONICS, INC.
S780-100H-0-SCH
TUESDAY, JULY 11, 2000 2 5
B
715 BRIGHT ST. DECATUR, IL 62522 (c) COPYRIGHT DEI 1998 JUGS MOTHERBOARD
C S780-100-0 SEE PAGE 3
Size Scale
DWG NO Rev
Sheet of
Changes from last Revision
CONFIDENTIAL AND PROPRIETARY INFORMATION. NOT FOR USE, COPY, OR DISTRIBUTION, IN WHOLE OR IN PART, EXCEPT BY WRITTEN AUTHORIZATION.
PCB NUMBER PCB REV.
RST*
XTAL2 XTAL1
X_XTAL_366Hz
D16
D12 D11 D10 D9
A11 A10
D10D10
A7 A12
A0
A1 A3 A9
D13D13
A7
A4 A5 A8 A13
D9D9
A[0:13]
D15
A0
A6
D14
A2
A4
D11D11
A5 A1
D13
A10 A11
A6
A0
D18
A13
D14D14 D8D8 D15D15
D8
A8 A12 A2 A3
D17
A9
D[8:15]
D12D12
D20 D19
VDD
VDD
VDD
VDD
VDD
VDD
VDD
VDD
VDD
VDD
DISP_CLK DISP_SDI DISP_SDO
SCLKO DRO DTO
AD_CLK
TX TFSO RFSO
U1F 74AHCT14
13 12
147
Y1
12.000MHz Y2
3.6864MHz
D1
1N914
J8 CON6
1 2 3 4 5 6
R1 10K
R2 1K
R9 10K
R66 1K
R8 10K R6 10K R4 10K R10 10K R7 10K R5 10K R3 10K
R11 66.5K
R13 2.21K 1%
+
C1 10uF TANT 20% 6.3V
U17 4060
11 12
7 5 4 6 14 13 15 1 2 3 9 10
PI RST
Q4 Q5 Q6 Q7 Q8 Q9
Q10 Q12 Q13 Q14
PO PO
R12 1M
R62 1K R63 1K
C3 22pF NPO 5%
R64 1K
C5 33pF
R65 1K
C4 15pF
C2 22pF NPO 5%
U2 ADSP-2184
16 13 14 44 97 98 99
100
1 2 4 5 6 7 8 9
10 11 51 53 43 45 50 47 49 48 46
35 34 33 32 31 42 40 39 38 37 55 56 57 58 61 62 63 64 65 68 69 70 72 73 74 75 76 77 78 79 81 82 83 84
87 86 85 94 93 89 88 26 27 29 30
95 52 54 19 20 21 22 23 24 2596
91
3
12
17
28
41
60
66
71
80
92
15
18
36
59
67
90
CLKOUT CLKIN XTAL RESET A0 A1/IAD0 A2/IAD1 A3/IAD2 A4/IAD3 A5/IAD4 A6/IAD5 A7/IAD6 A8/IAD7 A9/IAD8 A10/IAD9 A11/IAD10 A12/IAD11 A13/IAD12 EBR EBG ERESET EMS EINT ECLK ELIN ELOUT EE
SCLK0
DR0
RFS0
TFS0
DT0
SCLK1
DR1
RFS1
TFS1
DT1
D0/IAD13 D1/IAD14 D2/IAD15
D3/IACK
D4/IS
D5/IAL
D6/IRD
D7/IWR
D8 D9
D10 D11 D12 D13 D14 D15 D16 D17 D18 D19 D20 D21 D22 D23
FL0 FL1 FL2 PF0 MA PF1 MB PF2 MC PF3 PF4+IRQE
PF5+IRQL0 PF6+IRQL1 PF7+IRQ2
BGH
BR
BG
WR
RD
BMS
DMS
PMS
IOMS
CMSPWDACK
PWD
GND
GND
GND
GND
GND
GND
GND
GND
GND
GND
VDD
VDD
VDD
VDD
VDD
VDD
U3 29F040
12 11 10
9 8 7 6 5
27 26 23 25
4
28 29
3 2
22 24
1
13 14 15 17 18 19 20 21
30 31
32 16
A0 A1 A2 A3 A4 A5 A6 A7 A8 A9 A10 A11 A12 A13 A14 A15 A16 E
G A18
D0 D1 D2 D3 D4 D5 D6 D7
A17 W
VCC
VSS
U5 AD7302
8 7 6 5 4 3 2 1 9
10
15
16
13 11 12 20 17 14
19 18
DB0 DB1 DB2 DB3 DB4 DB5 DB6 DB7 CS
WR
VDD
REF
LDAC A/B PD DGND AGND CLR
VOUTA VOUTB
U4 4060
11 12
7 5 4 6
14 13 15
1 2 3 9
10
PI
RST
Q4 Q5 Q6 Q7 Q8 Q9 Q10 Q12 Q13 Q14 PO PO
R97 100K
U1B 74AHCT14
3 4
147
R98 100K
R99 100K
U1C 74AHCT14
5 6
147
U1D 74AHCT14
9 8
147
U1E 74AHCT14
11 10
147
PWR_SW KEY0 KEY1 KEY2 KEY3 AUDIO RFI TRIG
DISP_SDI
DISP_CLK
AUX_OUT RX TX DRO SCLKO DTO AD_CLK
AD_ENA
AD_LR
PWR_HOLD
ANT_ENA
LOW_V TFSO RFSO
HIGHSPEED
DISP_SDO
D
O NOT PLACE U17
D
O NOT PLACE R62-5
D
O NOT
P
LACE J8
DO NOT PLACE U
5

17
5 5
4 4
3 3
2 2
1 1
D D
C C
B B A A
DRAWN: K. T. SMITH NOV 2, 1998
E
DECATUR ELECTRONICS, INC.
S780-100H-0-SCH
TUESDAY, JULY 11, 2000 3 5
B
715 BRIGHT ST. DECATUR, IL 62522 (c) COPYRIGHT DEI 1998 JUGS MOTHERBOARD
C
S780-100-0 CHANGED R16 FROM 100K TO 10K (ECO 627)
Size Scale
DWG NO Rev
Sheet of
Changes from last Revision
CONFIDENTIAL AND PROPRIETARY INFORMATION. NOT FOR USE, COPY, OR DISTRIBUTION, IN WHOLE OR IN PART, EXCEPT BY WRITTEN AUTHORIZATION.
PCB NUMBER PCB REV.
VDD
VSS
VCCVBAT
H1 CON1
1
H2 CON1
1
H3 CON1
1
JP1 HEADER 2
1 2
U6
LP2953
15 3 14
5
11 12
1 816
9 10 4 13 6 2 7
IN OUT FB SDWN
COMP IN VREF GND GND GND
GND
COMP OUT
SENSE
5V TAP
ERROR
NC NC
U7 LM2941
2
3
1 5
4
EN
GND
ADJ
OUT
IN
C9 0.1uF C10
0.1uF C11
0.1uF C60
0.1uF
+
C6 15uF
10V TANT 20%
+
C8 22uF
6.3V TANT 20%
D2 1N914
Q2 2N3904
Q1 2N3906
R14
100K
R19 100K 1%
R16 10K R18
100K 1%
R23 1 1/4W MF
R17 357K 1% R24
1K 1%
R20 10K 1% R21 4.99K 1%
+
C7 15uF
10V TANT 20%
R15 10K 1% R22
1.5K 1%
PWR_HOLD
ANT_ENA
LOW_V
PWR_SW
DO NOT PLACE R2
4

18
5 5
4 4
3 3
2 2
1 1
D D
C C
B B A A
DRAWN: K. T. SMITH NOV 2, 1998
E
DECATUR ELECTRONICS, INC.
S780-100H-0-SCH
TUESDAY, JULY 11, 2000 4 5
B
715 BRIGHT ST. DECATUR, IL 62522 (c) COPYRIGHT DEI 1998 JUGS MOTHERBOARD
C
S780-100-0 SEE PAGE 3
Size Scale
DWG NO Rev
Sheet of
Changes from last Revision
CONFIDENTIAL AND PROPRIETARY INFORMATION. NOT FOR USE, COPY, OR DISTRIBUTION, IN WHOLE OR IN PART, EXCEPT BY WRITTEN AUTHORIZATION.
PCB NUMBER PCB REV.
+5A
VDD +5A
+5A VDD
VDD
VDD
+5A
+5A
+5A
VDD
+5A
+5A
+5A
+5A
+5A
VDD
VDD
R36 10K 1%
C39 0.1uF
C31 0.01uF
C42 470pF
+
C20 22uF
6.3V TANT 20%
C44 470pF
C46 0.1uF
+
C32 1uF TANT 6.3V
C47 0.01uF
R28 221 1%
C48 0.01uF
+
C14 1000uF ELEC 20%
+
C37 22uF
6.3V TANT 20%
C21 0.01uF FILM
+
C18 22uF
6.3V TANT 20%
+
C30 1uF TANT 6.3V
R57 10K
1%
+
C15 1000uF ELEC 20%
R33 100K
1%
+
C36 4.7uF TANT 6.3V
R60 75K
C13 0.1uF FILM
C19 0.01uF FILM
+
C45 1uF TANT 6.3V
C17 33pF
+
C49 1uF TANT 6.3V
JP3 HEADER 2
1 2
+
C50 1uF TANT 6.3V
R25 221 1%
R27 221 1%
R58 0 1%
R30 2.21K 1%
+
C40 22uF
6.3V TANT 20%
R34 12.4K
1%
R59 1K
R32 100 1%
R45 10
+ -
U10 MAX410
3 26
7
1
4
8
U1A
74AHCT14
12
14
7
R37 10K 1%
C23 0.1uF FILM
L1
FERRITE BEAD
JP2 HEADER 2
1 2
R38 10K 1%
R39 10K 1%
U14 AD1877
10 14 11 12 13 19 15 18 17 16 28
1 2 27 26 6 7 8 21 22 23
9
4
25
3
20
5
24
VINL VREFL CAPL1 CAPL2 AGNDL VINR VREFR CAPR1 CAPR2 AGNDR CLKIN
LRCK
WCLK
TAG
SOUT
RDEDGE
S/M
384/256
RLJUST
MSBDLY
RESET
AVDD
DVDD1
DVDD2
BCLK
AGND
DGND1
DGND2
+ -
U12A OP213FS
3 21
8 4
+ -
U13B OP213FS
5 67
R61 499K
+ -
U12B OP213FS
5 67
+ -
U9 MAX410
3 26
7
1
4
8
C25 0.1uF FILM
U11A
DS1800
10
8
9
INX
WX
OUTX
U11B DS1800
13
11
12
INX
WX
OUTX
R40 10K 1%
U11C DS1800
20
1
14 2
3 4 5 6 15 17 16 19 18 7
VCC GND AGND COUT
CLK
D
RST
ZCEN
MUTE
P0G
P0A
P1G
P1A
MODE
C38 0.1uF
R26 221 1%
R41 10K
1%
C12 0.1uF FILM
R42 10K
1%
C41 470pF
R29 2.21K 1%
C16 33pF
R44 49.9 1%
C27 33pF
C43 470pF
R31 100 1%
+ -
U13A OP213FS
3 21
8 4
C24 1M
+
C35 4.7uF TANT 6.3V
C29 0.01uF
R35 10K 1%
C28 33pF
R43 49.9 1%
C33 0.1uF C34
0.1uF
C26 33.2K
RFSO DRO
TFSO DTO
AD_CLK AD_ENA AD_LR SCLKO
HIGHSPEED
DO NOT PLACE R60
D
O NOT PLACE R59
D
O NOT PLACE C28, R42
D
O NOT PLACE 2ND CHANNEL
DO NOT PLACE U1
1

19
5 5
4 4
3 3
2 2
1 1
D D
C C
B B A A
DRAWN: K. T. SMITH NOV 2, 1998
E
DECATUR ELECTRONICS, INC.
S780-100H-0-SCH
TUESDAY, JULY 11, 2000 5 5
B
715 BRIGHT ST. DECATUR, IL 62522 (c) COPYRIGHT DEI 1998 JUGS MOTHERBOARD
C S780-100-0 SEE PAGE 3
Size Scale
DWG NO Rev
Sheet of
Changes from last Revision
CONFIDENTIAL AND PROPRIETARY INFORMATION. NOT FOR USE, COPY, OR DISTRIBUTION, IN WHOLE OR IN PART, EXCEPT BY WRITTEN AUTHORIZATION.
PCB NUMBER PCB REV.
VDD
VDD
VDD
VDD
VBAT
VBAT
VDD
VDD
VDD VDD
VDD
VDD
TP1 CON1
1
J6 CON4
1 2 3 4
U16 MAX232
1 3 4 5
11 10 12
9
2 6 14 7 13 8
15 16
C1+ C1- C2+ C2- T1IN T2IN R1OUT R2OUT
V+
V-
T1OUT T2OUT
R1IN R2IN
GND VCC
JP5 CON5
1 2 3 4 5
R68 10K
JP4 CON4
1 2 3 4
JP7 CON10 1 2 3 4 5 6 7 8 9 10
+ -
U15
LM311
2 37
5
6
4
18
D3 1N914
D4
1N914
R46 10K
+
C54 4.7uF
6.3V TANT 20%
R49 10K R52
10K R54
10K R55
10K
R56 10K
R47 330
R48
10
R50 100K 1%
C55 0.1uF
C56
0.1uF
C58 0.1uF
C57 0.1uF
C59 0.1uF
R53 100K 1%
C51 33pF C52
33pF
+
C53 4.7uF
6.3V TANT 20%
RX
AUX_OUT
DISP_SDI
TRIG
RFI
AUDIO
KEY0 KEY1 KEY2 KEY3
PWR_SW
TX
DISP_CLK
DISP_SDO
RS232 COMPONENTS
DO NOT PLACE RFI
DO NOT PLAC
E
JP
4

20
MICROWAVE MODULE
The microwave module of the SIArcade consists of a turnstile junction, which is coupled to a machined horn
lens antenna. The antenna radiates microwave energy with right-hand circular polarization and is designed to
receive left-hand polarized energy. The antenna returns the Doppler signal, which is coupled to a turnstile.
This provide isolation between the microwave oscillator and receiver section. The receiver section is com-
posed of a high-sensitivity mixer diode that is coupled to receive the Doppler shifted transmitted signal and a
small amount of the microwave energy from the oscillator. The mixer diode produces a low-level output signal
with a frequency shift of approximately 72Hz per mph of the target velocity.