Specifications

7-6
Front Panel Display Interface (J11)
This interface is used to connect a front panel LED to the CAT-1000B. The LED will be
on whenever 12VDC is applied. Current limiting is provided by R62 on the CAT-1000B
board. Additional inputs include PTT #1, PTT #2, Off Hook and DTMF Strobe #1 and #2.
The DTMF strobe outputs must be buffered with an external NPN transistor to prevent
loading.
J11-1. +12VDC J11-6. PTT #1
J11-2. GROUND J11-7. OFF HOOK
J11-3. DTMF STROBE #1 J11-8. PTT #2
J11-4. POWER INDICATOR J11-9. GROUND
J11-5. DTMF STROBE #2 J11-10. GROUND
Power Switch Interface JP1
This interface is used when a front panel power switch is added to the CAT-1000B
repeater controller. On the track side of the printed circuit board, cut the track
connecting the two pins of JP1. This will break the +12VDC path to the voltage
regulator. Connect a front panel power switch to JP1.
Internal Interface (H1) and (H4)
When the CAT-1000B is mounted in the RME-1000 rack mount enclosure the J1 and J4
connectors extend through the rear panel to the outside. Headers H1 and H4 provide
access to these inputs and outputs for connection to accessory equipment such as the
RBS-1000 when located inside the enclosure.
HEADER (H4) HEADER (H1)
1. CTCSS #1 9. PTT #2 1. USER IN #5 9. USER IN #3
2. CTCSS #2 10. PTT #1 2. USER OUT #4 10. USER OUT #7
3. TX AUDIO 11. RX AUDIO #1 3. USER IN #8 11. USER IN #6
4. +12VDC 12. RX AUDIO #1 4. USER OUT #5 12. USER OUT #2
5. COR #2 13. RX AUDIO #2 5. USER IN #4 13. USER IN #2
6. COR #2 14. RX AUDIO #2 6. USER OUT #8 14. USER OUT #6
7. COR #1 15. GROUND 7. USER IN #7 15. GROUND
8. COR #1 16. GROUND 8. USER OUT #3 16. GROUND
Header Pin Assignments
Header connectors on the CAT-1000B, MF-1000 and RBS-1000 use the same numbering
system. Looking at the board's solder side, one of the header pins is connected to a
square solder pad. This pin is always pin one. One row of pins are assigned odd
numbers while the other row of pins are assigned even numbers.