155-0185-00
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The Tektronix M187 (P/N 155-0185-00) is a four-digit counter, latch and D/A converter/DVM monolithic integrated circuit in a 20 pin DIP, designed by Don Larson.
The M187 contains a 4-decade BCD counter, latches, a multiplexer and a D/A converter that outputs a 10-level current interfacing directly with the 7000 series readout system.
When used with an integrator, comparator, and switchable current source, it forms a complete digital voltmeter.
Datasheet
Used in
- 7B15
- 7B85 (U686) S/N B088750+ (earlier S/N use 155-0171-00 or 155-0090-00)
- 7B87
Some instruments using part 155-0185-00
| Instrument | Manufacturer | Class | Model | Description | Introduced |
|---|---|---|---|---|---|
| 7B15 | Tektronix | Plug-in | 7B15 | 1 GHz delaying timebase | 1978 |
| 7B85 | Tektronix | Plug-in | 7B85 | 400 MHz delaying timebase | 1976 |
| 7B87 | Tektronix | Plug-in | 7B87 | 400 MHz time base for 7854 | 1981 |
