36,733
edits
No edit summary |
(remove parent category) |
||
(10 intermediate revisions by 2 users not shown) | |||
Line 1: | Line 1: | ||
{{Instrument Sidebar | |||
|manufacturer=Nicolet | |||
|model=526 | |||
|class=Digital | |||
|series=5000-series scopes | |||
|summary=Signal averager | |||
|image=Nicolet_526_1.jpg | |||
|caption=Nicolet 526 | |||
|introduced=1976 | |||
|discontinued=(?) | |||
|designers= | |||
|manuals= | |||
*''please add'' [[Category:Manual needed]] | |||
}} | |||
The '''Nicolet 526''' is a signal averager that is used in a modified OEMed [[5110|Tektronix 5110]] ([[5103N]]/[[D10]]) mainframe. | The '''Nicolet 526''' is a signal averager that is used in a modified OEMed [[5110|Tektronix 5110]] ([[5103N]]/[[D10]]) mainframe. | ||
The modifications performed by Nicolet include fan cooling via the bottom panel of the scope, | The modifications to the mainframe performed by Nicolet include | ||
* adding a perforated panel for fan cooling via the bottom panel of the scope, | |||
* adding a 12-pin connector on the rear panel of the scope | |||
* connected the 12-pin connector to the interface board, connector J604. | |||
The 526 has its own +5V regulated rail. | |||
<!--An external source of +7V unregulated DC is routed from thee 12-pin rear connector to the mainframe interface board, | |||
and into the plug-in.--> | |||
An LM323 +5V three-terminal regulator is the source of the +5V rail within the Nicolet 526. | |||
(Even though the input is marked "+7 UNREG" on the board, it should probably be +7.5V minimum, | |||
per the LM323 datasheet.) | |||
Since the LM323 is rated for 3 amperes, it is unlikely that the plug-in sinks more than that from | |||
the "+7 UNREG" input. | |||
How does the Nicolet 526 get the horizontal signal to the scope if it only plugs into the right vertical plug-in interface connector? | |||
In a standard, unmodified 5103, there is no signal path from the right vertical connector to the horizontal amplifier. | |||
Mechanically, the Nicolet 526 is a three-bay 5000-series plug-in. | Mechanically, the Nicolet 526 is a three-bay 5000-series plug-in. | ||
It mates with the center-bay plug-in connector. | It mates with the center-bay plug-in connector. | ||
The Nicolet 526 is made of four boards and a backplane. | The Nicolet 526 is made of four boards and a backplane which has a 40 position two sided edge connector for each board. | ||
Connection to the Tektronix mainframe is done via | Connection to the Tektronix mainframe is done via the backplane. | ||
The four boards are: | The four boards are: | ||
* ADC and Register | * ADC and Register: The SIGNAL wire from pin 23A on the plug-in interface goes to the inverting input of an LM301 opamp via a resistance of around 165 kΩ. The noninverting input of this opamp is grounded. | ||
* Address | * Address | ||
* Control | * Control | ||
Line 18: | Line 46: | ||
The wires connecting the backplane board on the 526 to the mainframe interface connector on the 526 are labeled: | 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) | * H LOCK TRIG (white w/ black stripe), pin 27B of the plug-in connector | ||
* TRIGGER (light violet) | * TRIGGER (light violet) 26A | ||
* RO TRIG (violet) | * RO TRIG (violet) 26B | ||
* Y LOCK IN (blue) | * Y LOCK IN (blue) 25B | ||
* FID SIG (green) maybe "FID" stands for "Free Induction Decay" in NMR? | * FID SIG (green) maybe "FID" stands for "Free Induction Decay" in NMR? pin 24B on the interface connector, wired to pin 33 of the board #2 (address). | ||
* SIGNAL (brown) | * SIGNAL (brown) 23A | ||
* RO STUS (yellow) | * RO STUS (yellow) 23B | ||
* +7 UNREG (black) | * +7 UNREG (black), pin 22A and 22B of the plug-in connector | ||
* +7 UNREG (black) | * +7 UNREG (black), pin 22A and 22B of the plug-in connector | ||
* GND (white) | * GND (white) 14A and 14B (standard 5000-series pinout) | ||
* GND (white) | * GND (white) 14A and 14B (standard 5000-series pinout) | ||
* -VERT SIG (white w/ red stripe) | * -VERT SIG (white w/ red stripe) 13B (standard 5000-series pinout for vert CH2) | ||
* +VERT SIG (white w/ brown stripe) | * +VERT SIG (white w/ brown stripe) 13A (standard 5000-series pinout for vert CH2) | ||
* -HORIZ SIG (white w/ orange stripe) | * -HORIZ SIG (white w/ orange stripe) 11B | ||
* +30 (red) | * +30 (red) 5A (standard 5000-series pinout) | ||
* -30 (orange) | * -30 (orange) 5B (standard 5000-series pinout) | ||
* 11A is jumpered to 14B at the male plug-in connector of the 526. | |||
The 12-pin rear-panel connector has its pins numbered on the inside of the connector. | The 12-pin rear-panel connector has its pins numbered on the inside of the connector. | ||
Line 61: | Line 90: | ||
| 9 || | || | | 9 || | || | ||
|- | |- | ||
| 10 || | | | 10 || | +7 UNREG || | ||
|- | |- | ||
| 11 || | || | | 11 || | || | ||
Line 93: | Line 122: | ||
[[Category:5000 series plugins]] | [[Category:5000 series plugins]] | ||
[[Category:Specifications needed]] | [[Category:Specifications needed]] | ||
[[Category:Nicolet products]] | [[Category:Nicolet products]] |