Diff: Dorrough Electronics
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| Newer page: | version 27 | Last edited on 3 May 2024 3:16 | by harold | Revert |
| Older page: | version 26 | Last edited on 3 May 2024 3:15 | by harold | Revert |
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-* [[
Upload:harold/Tech Man 280-380 Digital-92--8a-.pdf]
]
+* [Instruction Manual Digital Loudness Meters Models 280 & 380 (Digital Reading Meters)|
Upload:harold/Tech Man 280-380 Digital-92--8a-.pdf]
version 27
Dorrough Electronics
http://www.dorrough.com - Dorrough website.
https://www.dorrough.com/Usermanuals2.html - Manual archive.- Dorrough Legacy Product Documentation
40-A Loudness Monitor.- 40-A Tech Manual - Also covers 40-B, 10-A(B), 12-A(B), 20-A(B), 21-A(B)
- 1200 Stereo Test Set.
- DAP310 Discriminate Audio Processor. 1973
- Power Supply Update replaces diode reference with single chip regulator.
- 1977 Manual, scanned by Mike Phillips. 16MB
- 1978 Manual
DAP610 Discriminate Audio Processor. 1982
"
Image from WA3VJB.
Full Size- Schematic PC Board #111-404-
- Schematic Peak Hold Circuit PC Board 110-404-
- Revised Meter Calibration Procedure (Series-1 Only!)
- Schematic For PC Board 154-383-
Full
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