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EXTERNAL INTERFACE
Connectors
The ES3S form factor necessitates a non-standard approach to headset and
interface cable attachments. The headset attaches to a high-density 15-pin D-
Subminiature connector, and is held in place with allen (hex) head screws to
minimize the possibility of accidental mismatch of headset to instrument. All other
cables are attached via a multi-purpose 6-pin mini DIN connector. The ES3S wall
cube, printer/power cable, USB cable, or serial computer/power cable may be
attached to the mini DIN connector. Connector pin outs are as follows:
Multi-purpose Connector
6-pin mini DIN (pin configuration is shown as viewed from top of instrument)
Pin Function Pin Function
1
Ground
4
USB D+
6 5
2
+5 V In
5
RS-232 RX
4 3
3
RS-232 TX
6
USB D-
2 1
Notes:
1) The wall cube connector uses pins 1 and 2 for power.
2) Serial cables use pins 3 and 5 for RS-232 and pins 1 and 2 for power
(assuming wall cube is plugged into the cable’s mini DIN ‘pigtail’).
3) The USB cable uses pins 1 and 2 for USB bus-power (requires about 120
ma) and pins 4 and 6 for USB data.
