4.3MAIN BOARD PIN ASSIGNMENTS (J1 Card Edge) Left to right, looking at rear of case
P1 Connection |
| Standard | ||||
A |
|
| Spare (E16) | |||
| 1 |
| No connection | |||
B |
|
| No connection | |||
| 2 |
| Spare (E18) | |||
C |
|
| Spare (E19) | |||
| 3 |
| No connection | |||
D |
|
| No connection | |||
| 4 |
| No connection | |||
E |
|
| Spare (E43) | |||
| 5 |
| No connection | |||
F |
|
| 1999.9 (DP4) | |||
| 6 |
| Spare (E24) | |||
H |
|
| 199.99 (DP3) | |||
| 7 |
| Spare (E23) | |||
J |
|
| 19.999 (DP2) | |||
| 8 |
| Spare (E22) | |||
K |
|
| 1.9999 (DP1) | |||
| 9 |
| Spare (E25) | |||
L |
|
| Decimal point select | |||
| 10 |
| Spare (E26) | |||
M |
|
| Spare (E27) | |||
| 11 |
| ||||
N |
|
| Spare (E29) | |||
| 12 |
| +4.7 Vdc power output | |||
P |
|
| – Excitation voltage | |||
| 13 |
| + Reference voltage | |||
R |
|
|
|
|
| (lights display segments) |
|
| LAMP TEST | ||||
| 14 |
| + Excitation voltage | |||
S |
|
| Digital ground | |||
| 15 |
|
| (holds last display reading) | ||
|
| HOLD | ||||
T |
|
| Analog Ground | |||
| 16 |
| Spare (E32) | |||
U |
|
|
| (blanks 4 | ||
|
| BLANKING | ||||
| 17 |
| Spare (E34) | |||
V |
|
| Oscillator (100 kHz output) | |||
| 18 |
| No connection | |||
7
