Clear-Com HX System Frames - Manual (Page 41)

6.6 General Purpose Outputs (GPOs)
A general purpose output (GPO) or relay is a switch that is controlled remotely.The relay is
programmed in EHX to close a contact whenever a user panel’s key is pressed. When the
contact is closed, it completes an electronic circuit’s signal path so that a remote device
(such as a light) is powered.
A GPO can be programmed to mute a speaker, to turn on an applause light, open a door
lock, or perform a variety of other functions.
The male 25-pin D-type socket labeled GP OUT on the rear of the matrix frame connects
to eight general-purpose outputs (GPOs). The general purpose outputs are single-pole
double-throw relays with contact ratings of 30 VDC (volts direct current) at 1 ampere.
Shielded cable should be used to connect GPOs.
If the GP-OUT port is used on either an HX-Omega matrix fitted with XP power supplies
(part 740101Z) or an Eclipse HX-Median matrix fitted with HITRON power supplies
(740134Z) the following filter must be fitted between the PROC-RCC socket and the cable:
CINCH FA-25PS/1-LF 25W D-type in-line 1000pF filter
(UK supplier: Farnell 111-4108)
Important note:
This is an EMC conformance requirement only.
• If the Eclipse HX-Omega / Eclipse HX-Median matrix frame is equipped with Power-
One power supplies (720379Z), this filter should not be fitted. If this filter is already
fitted to the Eclipse HX-Omega or Eclipse HX-Median and the power supplies are
changed to Power-One units, the filter must be removed before the matrix is
powered up.
Each general-purpose output (GPO) has a relay inside the Eclipse HX-Omega, Eclipse HX-
Median or Eclipse HX-Delta matrix. When a general-purpose output is:
• Inactive, the associated common pin on the GP OUT connector is shorted to the
relevant normally closed pin.
• Active, the short between the common pin is broken and a new connection is made
between the common pin and the normally open pin.
41 Eclipse HX Matrix Frame Installation Guide