Radio Shack TRS-80 Model 3 - Cassette Jack Pin; Printer Pin Location

Printer PinLocation
Looking from the bottom rear at the printercard-edge connectoras in Figure 1on 2/2:
2 4 6 8 10 12 14 16 18 20 22 24 26 28 30 32 34
I: : :: =: : : : :: :: :: : :: : : : : :J
1 3 5 7 9 11 13 15 17 19 21 23 25 27 29 31 33
CassetteInterface
Suggested Input Level for Playback
from Recorder
Typical ComputerOutputLevel to
Recorder
Remote On/OffSwitching
Capability
Cassette Jack PinLocation
1to 5 Volts peak-to-peak at a
minimumimpedance
of 220 Ohms
800mV peak-to-peak at
1K Ohm
0.5 A maximumat 6 VDC
Looking at the outside ofthe cassette jack onthe Computer:
2
3
1. Remote Control
2. Signal Ground
3. Remote Control
4. Inputfrom Recorder'sEarphoneJack
5. Outputto Recorder's Aux
or Mic Jack
14/3