Chapter 4. Connector pin-outs
4.1 Instrument connector
This is a standard 26-pin “mil-spec” socket, conforming to MIL-DTL-26482 (formerly MIL-C-26482). A typical part-number is 02E-16-26S although the initial “02E” varies with manufacturer. Suitable mating connectors have part-numbers like ***-16-26P and are available from Amphenol, ITT Cannon and other manufacturers. |
|
Pin | Function | Pin | Function |
A | Coil + | P | not connected |
B | Coil - | R | Calibration + |
C | not connected | S | not connected |
D | not connected | T | not connected |
E | not connected | U | not connected |
F | not connected | V | not connected |
G | not connected | W | not connected |
H | Calibration - | X | not connected |
J | not connected | Y | Calibration return |
K | not connected | Z | not connected |
L | not connected | a | Calibration shield and casing |
M | not connected | b | not connected |
N | Coil shield | c | not connected |
| Wiring details for the compatible plug, ***-16-26P, as seen from the cable end (i.e. when assembling). |
4.2 Digitiser connector
This is a standard 26-pin “mil-spec” plug, conforming to MIL-DTL-26482 (formerly MIL-C-26482). A typical part-number is 02E-16-26P although the initial “02E” varies with manufacturer. Suitable mating connectors have part-numbers like ***-16-26S and are available from Amphenol, ITT Cannon and other manufacturers. |
|
Pin | Function | Pin | Function |
A | Signal + | P | Calibration signal |
B | Signal - | R | Calibration enable |
C | not connected | S | not connected |
D | not connected | T | not connected |
E | not connected | U | not connected |
F | not connected | V | Active-high select * |
G | not connected | W | not connected |
H | not connected | X | not connected |
J | not connected | Y | Logic ground |
K | not connected | Z | not connected |
L | not connected | a | not connected |
M | not connected | b | Power supply – zero volts |
N | Signal ground | c | Power supply - positive |
| Wiring details for the compatible socket, ***-16-26S, as seen from the cable end (i.e. when assembling). |
* DM24 digitisers normally provide active-low control outputs but the “calibration enable” input of the pre-amplifier is active-high. CTBTO models can be switched to active-high mode by connecting pin V to logic ground (pin Y). The Güralp ELP-0110 provides this connection internally.