Studio Technologies 2A 2013 - Manual (Page 27)

Model 2A User Guide Issue 1, October 2013
Studio Technologies, Inc. Page 27
never (hopefully!) miss an important cue
because a level control was accidentally
turned “off.”
VOX IFB Operation
To test the VOX interrupt feature, bring an
audio source into the auxiliary audio input.
Set the VOX input switch to the middle
position, labeled AUX, which routes the
auxiliary audio input to the VOX circuitry.
Use the VOX output switch to assign the
VOX output to one of the IFB channels. On
the channel you selected for VOX interrupt
watch the VOX and IFB status LEDs light
when signal is detected. Use the monitor
output to listen to VOX interrupt activity.
Telephone Interface 1
As an introduction to telephone interface 1,
begin by receiving audio via the interface.
Use this audio signal as a program audio
source. The receive level trim pot can be
used to adjust the level of the audio signal.
(An Xcelite “greenie” screwdriver works
great.) Try using the receive audio from
telephone interface 1 as a source for the
VOX interrupt function.
Telephone Interface 2
Telephone interface 2 has two additional
features: the ability to send IFB audio and
auto answer. It can be worthwhile to exper-
iment with using these features. Telephone
interface 2 allows audio from either of the
IFB channels to be sent out the telephone
interface. Use the audio routing switch to
send IFB channel 1 or IFB channel 2 audio
out the telephone interface. Also, try out
the process of receiving audio from the in-
terface, using it as a program or VOX audio
source.
When telephone interface 2 is set for the
telephone line mode the RING/LC LED will
flash on and off whenever ringing energy
is present on the connected telephone line.
Depending on the selected configuration
the interface may automatically answer in
response to a ringing signal. The configu-
ration choices are to answer after one, two,
or four rings or not to auto answer at all.
From the factory the typical setting is to
answer after one ring. When configured for
auto-answer the interface will answer one
second after the end of the selected num-
ber of “rings.
Access Stations
It’s important to thoroughly test all connect-
ed Model 22 and/or Model 24 Access Sta-
tions. Is the interrupt audio loud and clear?
Observe the status lamps inside the push-
button switches. Do the appropriate lamps
light fully bright when an interrupt takes
place? If an access station is configured to
mute the Model 2A’s monitor output, en-
sure that the monitor speaker mutes during
interrupt activity.
Audio Quality
In all cases, you should hear clear, click-
free audio. We intended the Model 2A
to sound great—if not, call us for technical
help. A completed installation should
be reliable, easy to use, and perform
to high sonic standards. Questions and
comments from the field are welcomed
and encouraged!
Operating Notes
Talent Amplifier Output
Should the Model 2A’s talent amplifier out-
put experience a fault condition the power
LED will flash on and off. Technically this