Author: Tom Droege Date: 960520 Revision: #1 960520 Key Words: CCD, instrumentationThis note describes the pinout of the cable between the camera head and the Data Card printed circuit board.
Below is the connector pin assignments looking into the printed circuit board from the parts side. The top of the list below is toward the PC board edge.
Pin Name Wire Color Pin Name Wire Color TEC+ Red TEC- Blue TEC+ Red/White TEC- Blue/White TEC IN Red/Black TEC OUT Blue/Black Phase V1 Orange Phase H2 Green Phase V2 Orange/Red LED Green/White ** +9 Orange/Black ** Thermister 1 Green/Black * +5 Red/Green ** Thermister 2 Blue/Red * Spare Black/Red ** Phase Reset White/Red HQG Black/White Phase H1 White/Black +15 Black Signal WhiteWires marked ** are not used in any cameras. Wires marked * are only used in the one of the three cameras that has a thermister pair to measure the water and CCD temperature. Thermister 1 measures the water, thermister 2 the CCD.
The cable between the printed circuit board and the camera head has all 20 wires in place. (Unused wires are left out in the internal camera head wiring). This cable is wired straight through, so it cannot be turned end for end and still work. (But if plugged in backwards it does not seem to kill the CCD, but I do not recommend the practice.)
Note that this means that one cannot use a mass terminated connector. It also means that the cable has a preffered end. That is one end connects to the printed circuit board and one to the camera head. When properly connected, the red wire is toward the edge of the Data printed circuit board and is to the left looking at the parts side. When looking at the camera heat, the red wire is closest to the center axis of the camera head.
Since this should go in the tech note file, I will add a few misc. things.
Phase H1 sits at -4V and goes to +6 during a horizontal shift.
Phase H2 sits at +6V and goes to -4 during a horizontal shift.
Phase H range, -6 to -2 , +4 to +8
Phase Reset sits at -2 and goes to +3 during a horizontal shift.
Phase R range, -5 to -2 , +3 to +5
Phase V1 sits at -8 and makes two excursions to +0.5 for a vertical shift, one before and one after V2.
Phase V2 sits at -8 and makes one excursion to +0.5 between the two V1 pulses.
V pulse range, =7.5 to -8.5 , 0 to +1
Note that the V pulse range has been tested to work well out of the indicated range.
Levels for these pulses are adjusted by the three ten turn pots at the top of the Data card. The H pulse adjustment pot is on the right towards the heat sink. The center pot adjusts the phase reset, the left pot adjusts V pulse level.
The voltages for the CCD are generated by a resistor chain. Starting at +15 volts the values are:
+15 1K +10 604 +7 806 +3 464 +0.7 Diode HQGroundAll the clock lines have a 2.2Meg resistor on the CCD card to HQG. The CCD is soldered into the round PC card that connects to the camera head connector.