Radio Shack TRS-80 Model III - Page 101

OPERATION
Printer Pin
Location
Looking from
the
bottom
rear at the
printer
card-edge
connector as in
Figure
1
on
6.
2 4 6
_ p pl,
8
10 12
14 16 18 20 22 24 26 28
30
32 34
—i r-i
r-i r-i r-i r-l m
ca
tn
O—
O—C3_
""O o
CD -=r
13 5 7
-C3 C3 C3
C3
C3 C3 C3 CO
CJ O
CI
CT
9
11
13
15
17
19
21 23 25
27
29 31
33
Cassette
Interface
Suggested
Input
Level for
Playback
from
Recorder
Typical Computer
Output
Level to
Recorder
Remote
On/Off
Switching
Capability
1 to 5 Volts
peak-to-peak at a
minimum
impedance of 220
Ohms
800 mV
peak-to-peak at 1 K Ohm
0.5 A
maximum at 6 VDC
Cassette
Jack
Pin Location
Looking at the outside
of the
cassette
jack on
the
Computer:
2
1.
Remote
Control
2.
Signal
Ground
3.
Remote
Control
4. Input
from
Recorder's
Earphone
Jack
5.
Output
to
Recorder's
Aux or
Mic
Jack
91