TM5000 Series plug-in interface
Tektronix TM5000 mainframes provide power supplies and signal connections for TM5000 plug-ins.
There are two dedicated, floating 25 VAC transformer windings per slot, as well as several AC and DC buses shared by all slots.
For each slot, two uncommitted transistors (one NPN and one PNP) are mounted in the mainframe. These are available for the module's power regulation circuits.
Whereas TM500 mainframes supply filtered, unregulated DC voltages, in TM5000 units a switch-mode power supply feeds the DC rails.
The signal pin connections depend on the individual modules. For details, please see the TM 500 Rear Interface Data Book.
| B side | A side | |
|---|---|---|
| Pin | Function | Function |
| 28..14 | Signals | Signals |
| 13 | 25 VAC winding #1 | 25 VAC winding #1 |
| 12 | +26 VDC | +26 VDC |
| 11 | Collector lead of PNP series pass | Base lead of PNP series pass |
| 10 | Transformer shield lead | Emitter lead of PNP series pass |
| 9 | Ground | Ground |
| 8 | −26 VDC | −26 VDC |
| 7 | Collector lead of NPN series pass | Emitter lead of NPN series pass |
| 6 | PWR | Base lead of NPN series pass |
| 5 | 17.5 VAC winding | 17.5 VAC winding |
| 4 | Ground | Ground |
| 3 | Ground | Ground |
| 2 | +8 V filtered DC | +8 V filtered DC |
| 1 | 25 VAC winding #2 | 25 VAC winding #2 |
Interface connections viewed from rear of power module. Pins 14 through 28 are used for signal connections.
Pin group function legend
DC power and ground AC power Signals Uncommitted transistors