ELEC 242 Lab

The Interface Module

The path from the instruments to the breadboard is provided by the Interface Module. This is a printed circuit board with a variety of different connectors and two short, single-row socket strips.
\includegraphics[scale=0.800000]{interface.ps}
These are like the socket strips on the breadboard (five points connected together) except that instead of being connected just to themselves, the pins are also connected to the other connectors on the board.

Here's a closeup of the two halves of the socket strip (shown separately to fit the page better):

\includegraphics[scale=0.500000]{iface_temp.ps}
And here's a table of what the pins are connected to:
Pin Signal Conn Function Pin Signal Function
1 bnc1 J1-1 BNC 1 28 nc no connection
2 bnc2 J1-2 BNC 2 29 nc no connection
3 bnc3 J1-3 BNC 3 30 nc no connection
4 ph1l J1-4 Phone Plug 1 left 31 nc no connection
5 ph1r J1-4 Phone Plug 1 right 32 nc no connection
6 ph2l J1-5 Phone Plug 2 left 33 nc no connection
7 ph2r J1-5 Phone Plug 2 right 34 nc no connection
8 ph3l J1-6 Phone Plug 3 left 35 nc no connection
9 ph3r J1-6 Phone Plug 3 right 36 nc no connection
10 ear1 J1-7 Handset earpiece 37 nc no connection
11 ear2 J1-7 Handset earpiece 38 nc no connection
12 mic1 J1-7 Handset microphone 39 nc no connection
13 mic2 J1-7 Handset microphone 40 nc no connection
14 gnd Ground 41 gnd Ground
15 sound_mic J2-1 microphone 42 ach0 input0
16 sound_spkrl J2-1 speaker left 43 ach1 input1
17 sound_spkrr J2-1 speaker right 44 ach2 input2
18 sound_lin_inl J2-1 line in left 45 ach3 input3
19 sound_lin_inr J2-1 line in right 46 ach4 input4
20 sound_lin_outl J2-1 line out left 47 ach5 input5
21 sound_lin_outr J2-1 line out right 48 ach6 input6
22 gnd Ground 49 ach7 input7
23 ph4l J2-2 Phone Plug 4 left 50 nc no connection
24 ph4r J2-2 Phone Plug 4 right 51 dac0 output 0
25 bnc1 J2-3 BNC 4 52 dac1 output 1
26 bnc2 J2-4 BNC 5 53 nc no connection
27 bnc3 J2-5 BNC 6 54 nc no connection
Note: pins 15-21 go to PC sound card