ISIS Professional - F:\GPS\GPSDO\Interface GPS_D.DSN - F6CSX

Jun 3, 2010 - Page 1. NMEA. MR. +5V. ROM select. 1. 6. 2. 7. 3. 8. 4. 9. 5. J2. CONN-D9F. T1IN. 11. R1OUT. 12. T2IN. 10. R2OUT. 9. T1OUT. 14. R1IN. 13.
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+5V

3

1uF

4

C2-

C2+

VI

D2

R7

C7

C8

470

10uF

100nF

VDC in

1

GND 1 PPS

2N2222

U1

5

VO

1N4001

2

Q1

1uF

On heatsink

7805 +5V

390

C4 J2

D1

R6

C2

VDC

U3

C9 10uF

C3 1uF

6 2 8 7 13 14

CONN-D9F

R5 22k

VSVS+ R2IN T2OUT R1IN T1OUT

R2OUT T2IN R1OUT T1IN

C1-

C1+

9 10 12 11

SW1 MAX232

1

C1

SW-SPDT

R3

10k

10k

11 12 13 14 15 16 17 18 19 20

D3 Power ON

10 9 8 7 6 5 4 3 2 1

ROM select NMEA MR

OFF

1uF

To GPS

R4

DSW1 DIPSW_3

C6

ON

10kHz test

+5V

R2

10k

J3

1pps test 3

R1

4 5 6

5 9 4 8 3 7 2 6 1

100nF 3 2 1

10 10kHz out

C10 100nF

U2

1

JP1 +5V Ant

VDD

R8

+5V 13

5 RA0

RC5

390

D4 GPS Locked

VSS 14

PIC16F688

3DFIX software by W1AUV TITLE:

DATE:

GPS Disciplined Oscillator Interface GPS BY:

F6CSX

REV:

03/06/10 PAGE: D

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