Db25 Electrical Specification; Typical Usage - Euphonix System 5 Control Surface/Frame Manual

DB25 Electrical Specification:

The +5V output on the connector is protected internally by a 200mA self-resetting
fuse. If LED drive outputs are used, it is recommended that several +5V connections
be used to drive the anodes of the LED's (at least one +5V wire per LED used). The
active-low LED drive outputs are current limited by internal 110 ohm series resistors,
and are capable of sinking 20mA each. The active-high switch inputs are TTL-level
inputs with 100K pull-down resistors.

Typical Usage:

Currently, the software supports remote talkback switching and status on Switch
inputs 1-4 and LED outputs 1-4 on the CM401 Expansion Port only. Functionality is
as follows:
Function
Talkback ! Mon A
Talkback ! Mon B
Talkback ! Mon C
Talkback ! Mon D
For example, while Switch 1 is pressed down, the Talkback mic signal will be
routed to the Mon A output, and LED 1 will light during the time that the switch is
pressed down. Also, if Talkback ! Mon A is activated from the console itself, LED 1
will also light, to indicate the status.
Pressing SW1A routes the Talkback signal to Mon A, and the SW1B LED lights to
indicate the Talkback!Mon A status.
4 3
SW 1A
1 2
PIN 2
S5 Control Surface/Frame Manual
Triggered by
Switch 1 input
(momentary)
Switch 2 input
(momentary)
Switch 3 input
(momentary)
Switch 4 input
(momentary)
PINS 3, 6, 9, 12, 13, 14, 17, 20, 23 (PICK ANY 4)
6 4 3
SW 1B SW 2A
LIGHTED SW ITCH
5 1 2
PIN 1 PIN 16
+5V
6 4 3
SW 2B SW 3A
LIGHTED SW ITCH
5 1 2
PIN 15 PIN 5 PIN 4
Page 26
Status shown on
LED 1 output
LED 2 output
LED 3 output
LED 4 output
6 4 3 6
SW 3B SW 4A
LIGHTED SW ITCH
5 1 2 5
PIN 19 PIN 18
Version 1.0 ©1999 Euphonix, Inc.
SW 4B
LIGHTED SW ITCH