Difference between revisions of "ACU-RITE D200 DRO"
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* For 115V operation, jumper Primary #1A to Primary #2A as well as Primary #1B to Primary #2B. This puts the primaries in parallel. | * For 115V operation, jumper Primary #1A to Primary #2A as well as Primary #1B to Primary #2B. This puts the primaries in parallel. | ||
* For 230V operation, jumper Primary #1B to Primary #2A. This puts the primaries in series. | * For 230V operation, jumper Primary #1B to Primary #2A. This puts the primaries in series. | ||
| + | |||
| + | === 2x Logic Board === | ||
| + | |||
| + | {| class="wikitable" | ||
| + | ! Name | ||
| + | ! Markings | ||
| + | |- | ||
| + | | U1 | ||
| + | | [https://www.allegromicro.com/~/media/Files/Datasheets/UCN5818-Datasheet.ashx Allegro UCN5818EPF] | ||
| + | |- | ||
| + | | U2 | ||
| + | | [https://www.mouser.com/ds/2/149/74VHC138-104558.pdf Fairchild 74VHC138] | ||
| + | |- | ||
| + | | U3 | ||
| + | | [https://en.wikichip.org/wiki/amd/am186ex/am186es%E2%80%9320kc%5Cw AMD Am188 EM-20KC] | ||
| + | |- | ||
| + | | U4 | ||
| + | | [http://ww1.microchip.com/downloads/en/DeviceDoc/20067K.pdf Microchip 93AA66/SN] | ||
| + | |- | ||
| + | | U5 | ||
| + | | [https://pdf1.alldatasheet.com/datasheet-pdf/view/50688/FAIRCHILD/74VHCT573/+_0589UwYhRDpKxHeDCdPL+hIh+/datasheet.pdf Fairchild 74VHCT573] | ||
| + | |- | ||
| + | | U6 | ||
| + | | [https://media.digikey.com/pdf/Data%20Sheets/ISSI%20PDFs/IS62C256.pdf ISSI IS62C256-70U] | ||
| + | |- | ||
| + | | U7 | ||
| + | | [http://pdf.datasheetcatalog.com/datasheet/nationalsemiconductor/DS011505.PDF National Semiconductor 74VHCT74] | ||
| + | |- | ||
| + | | U8 | ||
| + | | AMI 9851NTF ACU-RITE 387577-702 REV-B | ||
| + | |- | ||
| + | | U9, U10 | ||
| + | | [https://pdf1.alldatasheet.com/datasheet-pdf/view/12306/MOTOROLA/MC74VHC574DT/+02_QJUILSxSPME+SpEw+RMhIHSi+/datasheet.pdf Motorola VHC574] | ||
| + | |- | ||
| + | | U11 | ||
| + | | unknown, sticker reads "DRO 1.1.2" (ROM?) | ||
| + | |- | ||
| + | | U12 | ||
| + | | [http://www.mouser.com/ds/2/149/74VHC123A-15491.pdf Fairchild 74VHC123A] | ||
| + | |} | ||
| + | |||
| + | === VFDs === | ||
| + | |||
| + | ==== Top ==== | ||
| + | |||
| + | Noritake CH1573G | ||
| + | |||
| + | 8-digit 14-segment display with periods. The last (right-most) segment has a dot in the center of the top "circle" in the 8. There are also words above each digit to indicate modes. | ||
| + | |||
| + | ==== Bottom ==== | ||
| + | |||
| + | Noritake CH1572G | ||
| + | |||
| + | 8-digit 7-segment display with periods and split center segments. The last (right-most) segment has a dot in the center of the top "circle" in the 8. | ||
== Online Resources == | == Online Resources == | ||
Latest revision as of 06:53, 15 June 2019
Overview
Glass scale based digital read out (DRO). It uses a vacuum fluorescent display (VFD) rather than a more modern LED displays.
2X MILL D200 DOM PN: 2001003 SN: 99050879 Rev: B
Photos
Taken from eBay seller lovedabeach's eBay Item #122087858728.
Replacement Parts
Power Entry Module
TE Connectivity Corcom Filters PS0SXS000
Transformer
ENSIGN CORPORATION 2001-900 B 172.9911
172 is the manufacturer code (Acu-Rite or Ensign?) 9911 is the date code, November 1999. B is the revision level.
Specs:
- Input Power: 115/230VAC ± 20% @ 50/60Hz
- Output #1: 7V minimum ripple valley @ 1.4ADC / 47000uF (± 20%) capacitor with 80% nominal input (92VAC instead of 115VAC), 15V ripple peak @ 450mA with 120% (138VAC instead of 115VAC) input.
- Output #2: 34V minimum @ 115mA DC / 1000uF (± 20%) capacitor with 80% nominal input, no maximum specified.
- typical forward diode drop is expected to be 1V
- thermal fuse on each secondary, if it blows it's permanent.
- external fusing, 0.5A slow blow for 115V operation, 0.25A slow blow for 230V operation.
Transformer pinout:
The bobbin manufacturer and Acu-Rite use different pin mappings. On the bobbin, pin #1 is marked by a notch in the plastic, that pin is also closer to it's adjacent pin than the rest. The bobbin pin numbers are numbered 1-6 then 7-12 clockwise (TODO: from above or below?). In other words, bobbin pins 6 and 7 are across from each other at the same end of the transformer.
| Bobbin Pin | Acu-Rite Pin | Function |
|---|---|---|
| 1 | [NC] | [NC] |
| 2 | 1 | Primary #1 A |
| 3 | 2 | Primary #1 B |
| 4 | 3 | Primary #2 A |
| 5 | 4 | Primary #2 B |
| 6 | [NC] | [NC] |
| 7 | 5 | >34V out |
| 8 | 6 | >34V out |
| 9 | [NC] | [NC] |
| 10 | [NC] | [NC] |
| 11 | 7 | 7-15V out |
| 12 | 8 | 7-15V out |
- For 115V operation, jumper Primary #1A to Primary #2A as well as Primary #1B to Primary #2B. This puts the primaries in parallel.
- For 230V operation, jumper Primary #1B to Primary #2A. This puts the primaries in series.
2x Logic Board
| Name | Markings |
|---|---|
| U1 | Allegro UCN5818EPF |
| U2 | Fairchild 74VHC138 |
| U3 | AMD Am188 EM-20KC |
| U4 | Microchip 93AA66/SN |
| U5 | Fairchild 74VHCT573 |
| U6 | ISSI IS62C256-70U |
| U7 | National Semiconductor 74VHCT74 |
| U8 | AMI 9851NTF ACU-RITE 387577-702 REV-B |
| U9, U10 | Motorola VHC574 |
| U11 | unknown, sticker reads "DRO 1.1.2" (ROM?) |
| U12 | Fairchild 74VHC123A |
VFDs
Top
Noritake CH1573G
8-digit 14-segment display with periods. The last (right-most) segment has a dot in the center of the top "circle" in the 8. There are also words above each digit to indicate modes.
Bottom
Noritake CH1572G
8-digit 7-segment display with periods and split center segments. The last (right-most) segment has a dot in the center of the top "circle" in the 8.
Online Resources
Acu-Rite DRO 200M Reference Manual
Service: Helpline - HEIDENHAIN