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==Rear Interface== | ==Rear Interface== | ||
(right-hand plug-in slot as viewed from front) | (on right-hand plug-in slot as viewed from front) | ||
{| class="wikitable" | |||
|- | |||
! colspan="2" | Connector Pin | |||
! rowspan="2" | Description | |||
|- | |||
! Signal | |||
! Return | |||
|- | |||
| 27B || 28B || Trig output (complement polarity installed; for normal polarity, front panel input requires optional cable and front output disconnection) ''[note error on manual p.1-12; table 1-13 is correct]'' | |||
|- | |||
| 24B || 25B || Trig input (with optional cable, front panel input must be disconnected) | |||
|- | |||
| 25A || 26A || Amplitude Monitor (from output via 27 kΩ) | |||
|- | |||
| 22A || || External Low Level Control Input (requires internal jumper and trim) | |||
|- | |||
| 22B || || External High Level Control Input (requires internal jumper and trim) | |||
|} | |||
Custom connection solder pads are available on the left plug-in slot, which is otherwise used only for the associated pass transistors in the mainframe. | Custom connection solder pads are available on the left plug-in slot, which is otherwise used only for the associated pass transistors in the mainframe. | ||