84 Appendix C Testing with the TBA0STU Calibration Test Unit TB7300 Installation and Operation Manual
© Tait International Limited December 2022
Function Supported by TB7300 Information
b
Serial port Not used
c
Power LED Supported (see Note 1) The power LED is lit when the
CTU is powered up. This supply
powers the speaker and LEDs.
You do not need to provide
power to the CTU to make audio
level measurements or to use
the digital input switches.
d
Noise source output and on/off
switch
Not used (see Note 2) Use the noise source in the
reciter controlled from the
WebUI to test the receiver
e
Balanced line input Supported Connects the LINE INPUT
connector to the balanced line
input on the system interface
f
Speaker audio selection switch Supported Switch to Balanced or Off
g
Unbalanced line input Not used
h
Unbalanced line output Not used
i
Balanced line output Supported Connects the LINE OUTPUT to
the balanced line output on the
system interface. The audio can
be monitored on the CTU
speaker switched to Balanced.
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