Справочник Пользователя для StudioTech 233

The three pushbutton switches used in 
the Model 233 were selected for several 
reasons. Foremost was the fact that they 
are highly reliable, using gold-plated con-
tacts for long life in less-than-ideal environ-
ments. A second reason was that applying 
customized labels to the button caps 
would be very simple. The labels, text 
printed on clear material, are placed under 
the clear caps on the top of the buttons.

From the factory the left button is labeled 
COUGH, the center button is labeled 
TALKBACK 1, and the right button is 
labeled TALKBACK 2. This was selected 
to be appropriate for many on-air applica-
tions in English-speaking locations. But 
it’s expected that these may need to be 
changed to meet the needs of specific 
applications.

As a “head start” for some applications, 
a clear sheet with a number of commonly 
used button designations printed on it is 
included in the shipping carton. These 
were created at the factory using a stan-
dard personal computer graphics program 
and laser printed onto 3M CG3300 trans-
parency film. The desired button labels 
can be cut out with a pair of scissors, fol-
lowing the printed guide lines that indicate 
the required size.

The clear lens on top of each button cap 
can be removed with a fingernail or small 
screwdriver. Be certain not to scratch the 
button if a screwdriver or other small tool 
is used. The clear label can be removed 
and replaced. The button cap is then 
snapped back into the top of the button 
housing using finger-pressure only. No 
tool is required to replace the button cap.

If you need to make your own labels the 
process is quite simple. Use a personal 

computer to create the desired text. The 
finished label size should be 0.625-inches 
(15.8 mm) square. The completed artwork 
can then be printed on transparency film 
sheets using a laser or inkjet printer. These 
sheets are readily available from most 
office supply stores. A pair of scissors or 
an X-ACTO® knife will complete the task.

For the Model 233 to support the needs 
of specific applications a number of 
operating parameters must be configured. 
These include microphone preamplifier 
gain, phantom power on/off, headphone 
source and output mode selection, and 
operating modes. One 12-position and 
three 8-position DIP-type switch assemblies 
are used to establish the desired configura-
tion. These switch assemblies are referred 
to as SW1 through SW4, with individual 
switches designated as SW1-1, SW1-2, 
etc. The switch assemblies are accessed 
through openings in the bottom of the 
Model 233’s enclosure. The enclosure 
does not have to be disassembled to 
gain access to the switches.

To prevent unauthorized personnel from 
changing the configuration settings, a se-
curity plate is attached to the bottom of the 
Model 233’s enclosure. For convenience, 
attached to the security plate is a configura-
tion settings label. It provides a summary 
of the configurable parameters and related 
information. Refer to Appendix A for a 
representative view of the label. The secu-
rity plate is held in place by means of four 
rubber bumpers (“feet”) that have built-in 
screws. Using your fingers, remove the four 
bumpers so that the plate can be removed. 
Refer to Figure 3 for a detailed view of the 
configuration switch assemblies.