DNF Controls Universal Switch Panel (USP-8, USP-8D, & USP-16) - Manual (Page 9)

Universal Switch Panel (USP) User Manual 7 OF 41
E. GROUP (RADIO GROUP) OPERATION
The GPO Group operates like a radio group of interlocked switches. Pressing one
switch causes the other switches to automatically release. Only one switch will
remain pressed at any time.
A GPO can belong to one and only one GPO Group. More than one GPO Group
can exist with each group made up of other GPOs. When a GPO is assigned to a
new GPO Group, it is automatically removed from its previous group.
Only one member of a GPO Group can be ON at any time. When a GPO member
is turned ON, all of the other members are immediately turned off. The GPO will
stay on until another member of the group is turned on. With the exception of
powering on the USP, at least one GPO from the GPO group will be turned on.
F. ALARM OPERATION
The GPO can be used to indicate the presence of an alarm condition, either active
or not cleared alarm. The GPO will turn ON when any alarm is active or has not
been cleared. It will turn OFF only when all alarms have been cleared.
G. GPO CONTROL BY SWITCH ON A REMOTE USP
The GPO can be controlled by a switch on a remote Universal Switch Panel in
addition to being controlled by a switch on the same panel. The GPO will
operate according to its user configured Operating Mode whenever the local or
remote switch is pressed and released.
H. GPO CONTROL BY GTP-32 OR DC20 EVENT
The GPO can be controlled by a GTP-32 or DC20 event― GPI or Combinatorial.
It will operate according to its user configured Operating Mode as if a local switch
had been pressed or released.
V. TALLY OPERATING MODE
The tally is the LCD backlight on the face of the front panel switch. It will be dark,
red, green, amber, flashing red, flashing green, or flashing amber, as configured by
the user on the USP’s Tally Configuration web page. There are two tally
configurations, one configuration for an ON tally and another configuration for an OFF
tally. All tally configurations are done from the USP’s Tally web page.
A. FOLLOW GPO OPERATION
The tally follows the state of the GPO. The tally is ON when the GPO is turned
ON and OFF when the GPO is turned off. The tally follows the state of the GPO
regardless of the operating mode of the GPO.
B. EXTERNAL (GPI) OPERATION
The tally can follow the state of an external device, like a downstream keyer,
through an external GPI. The USP has 8 or 16 GPI Inputs, located on the rear of
the unit. Each GPI is an opto-isolated input, providing electrical isolation
between the external device and the USP. The external GPI can be assigned to
control the tally on a switch. Only one GPI can be assigned to control a switch’s
tally. When a new GPI is assigned to control a tally, the previous assignment is
deleted. One GPI can be assigned to control more than one tally. The tally will
turn ON when the controlling GPI is ON and turn OFF when the GPI is OFF.