Nicolet 526
The Nicolet 526 is a signal averager that was built into a modified OEMed Tektronix 5110 (5103N/D10) mainframe. The modifications performed by Nicolet include fan cooling via the bottom panel of the scope, and a 12-pin connector on the rear panel of the scope, connected to the interface board, connector J604.
The wires connecting the backplane board on the 526 to the mainframe interface connector on the 526 are labeled:
- H LOCK TRIG (white w/ black stripe)
- TRIGGER (light violet)
- RO TRIG (violet)
- Y LOCK IN (blue)
- FID SIG (green)
- SIGNAL (brown)
- RO STUS (yellow)
- +7 UNREG (black)
- +7 UNREG (black)
- GND (white)
- GND (white)
- -VERT SIG (white w/ red stripe)
- +VERT SIG (white w/ brown stripe)
- -HORIZ SIG (white w/ orange stripe)
- +30 (red)
- -30 (orange)
The 12-pin rear-panel connector has its pins numbered on the inside of the connector.
| Pin | Function | Comment |
|---|---|---|
| 1 | ||
| 2 | ||
| 3 | ||
| 4 | ||
| 5 | ||
| 6 | ||
| 7 | ||
| 8 | ||
| 9 | ||
| 10 | Ground | |
| 11 | ||
| 12 |
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Front
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Top
-
Left
-
Right
-
Bottom
-
ADC and Register
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ADC and Register
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Address Board
-
Address Board
-
Control Board
-
Control Board
-
Memory
-
Memory
-
Rear
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Top front
-
Right front
-
Bottom front
-
Mainframe rear connector internal
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Mainframe rear connector external
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Mainframe rear connector to J604
