projects / sigrok-dumps.git / blame
| Commit | Line | Data |
|---|---|---|
| f53468a3 AG |
1 | ------------------------------------------------------------------------------- |
| 2 | GPIB / HP 53131A | |
| 3 | ------------------------------------------------------------------------------- | |
| 4 | ||
| 5 | This is a set of captures of traffic with an HP53131A counter using an | |
| 6 | AR488 (Arduino bitbang GPIB adapter). | |
| 7 | ||
| 8 | ||
| 9 | Logic analyzer setup | |
| 10 | -------------------- | |
| 11 | ||
| 12 | The logic analyzer used was a generic FX2 board (at 500kHz): | |
| 13 | ||
| 14 | Probe GPIB | |
| 15 | ---------------- | |
| 16 | 0 DIO1 | |
| 17 | 1 DIO2 | |
| 18 | 2 DIO3 | |
| 19 | 3 DIO4 | |
| 20 | 4 DIO5 | |
| 21 | 5 DIO6 | |
| 22 | 6 DIO7 | |
| 23 | 7 DIO8 | |
| 24 | 8 EOI | |
| 25 | 9 DAV | |
| 26 | 10 NRFD | |
| 27 | 11 NDAC | |
| 28 | 12 IFC | |
| 29 | 13 SRQ | |
| 30 | 14 ATN | |
| 31 | 15 REN | |
| 32 | ||
| 33 | ||
| 34 | hp53131a-idn-read.sr | |
| 35 | -------------------- | |
| 36 | ||
| 37 | Send *idn? and receive instrument ident string. | |
| 38 | Send 'read?', wait for acquisition and receive a measurement (10MHz frequency). | |
| 39 | ||
| 40 | ||
| 41 | hp53131a-ton.sr | |
| 42 | --------------- | |
| 43 | ||
| 44 | Set HP53131A to period measurement and talk-only mode and AR488 to | |
| 45 | listen-only mode. | |
| 46 | ||
| 47 | This setup is specifically useful for recording long logfiles of timing data | |
| 48 | for use in ADEV measurements by "time-nuts": | |
| 49 | ||
| 50 | http://www.ke5fx.com/timelab/readme.htm | |
| 51 | ||
| 52 | Note: the regular NRFD/NDAC handshake occurring before and after the LON | |
| 53 | transfer is related to the AR488 timing out non-existent transfers and may | |
| 54 | be incorrect. |