Daim Ntawv Qhia Tus Neeg Siv

9 Front & Rear Panel Details Logic Circuit 10
Buttons, knobs, switches, lights, and connections.
Or, ”What happens if I push this button?”:
And a look at the back panel:
Angry Audio guy.
Just look at how
much he despises
dead air.
Illuminated buttons
indicate which source is
currently on-air and allow
manual switching of audio
source.
Silence indicator.
Green = above
threshold (audio).
Red = below
threshold (silence).
Sensor bypass
toggles between
manual and
automatic
source
switching.
Recovery switch determines if primary
audio will be automatically routed
back to air when it returns, or if the
gadget will keep the backup source
on-air until it is manually switched.
Threshold control
determines what
level constitutes
silence, triggering
the switch to the
backup source.
Delay control
determines how long
the gadget waits after
audio falls below the
threshold to switch to
the backup source.
Primary audio input
on balanced,
+4dBu female XLR
input jacks.
120V or 240V
AC power cord.
Secondary audio
input on balanced,
+4dBu female XLR
input jacks.
Output on
balanced,
+4dBu male
XLR jacks.
Logic port for remote manual
switching between sources and
for starting the backup source
and/or triggering a silence alert.
ENGINEERED & ASSEMBLED IN NASHVILLE, USA.
PN 991009
SN 00001
ANGRYAUDIO.COM
LOGIC
OUTPUT RL
INPUT B RLINPUT A RL
FAILSAFE
SWITCHING
GADGET
-18
-24
-30
2s
8s
16s
30s
1m
2m
4m
4s
SENSOR
MANUAL
SENSOR
A B
MAIN BACKUP
A B
A B
-36
DELAY RECOVERYTHRESHOLD
Connecting to the outside world.
The 9-pin DSUB connector on the rear panel of the Failsafe Gadget serves as
a handy logic port for manually switching between the A and B audio sources
remotely, and for starting the the backup audio source or triggering a silence
alert.
The pin-outs are as follows:
1: Common 6: Relay B
2: Remote A (Main Source) 7: Relay C
3: Remote B (Backup Source) 8: Relay A
4: No connection 9: Common
5: No connection
A (MAIN)
B (BACKUP)
123
876
B (NC)
A (NO)
C
A momentary contact closure to ground via a pushbutton can remotely switch
between the A and B sources, which exactly mimics the front panel buttons. To
select A, short Pin 2 to Pin 1. To select B, short Pin 3 to Pin 1. An open collector to
ground or relay contact to ground will also activate these inputs.
Dry relay contacts provide A/B switch status. If source A is active, Pin 8 will be
shorted to Pin 7. If source B is active, Pin 6 will be shorted to Pin 7. Please note
this relay is intended to switch small logic signals; never connect the logic port to
AC mains power.
If soldering or crimping pins for a DSUB connector makes you nervous or sad,
we’ve included a DB9M to RJ45F adapter in the box for the convenience of wiring
with CAT5/6 cable. Happy now?