TLA CTS-5-CA, Manual

5

1.7  Sensivity adjustment of the built in microphone amplifier 

You may reduce the sensitivity of the built-in microphone amplifier with the slide switch located 

on the right side below of the Tuning Set. You may need this especially for the low tones of a 

piano. The optimal setting of this switch and the optimal placement of the Tuning Set must be 

found during the tuning process. 

2 Operating 

Examples 

2.1  Tuning, equal temperament, standard pitch 440 Hertz. 

Normally a musical instrument is tuned in standard equal temperament. The standard concert 

pitch a', on which the complete level of pitch is based, is often tuned to a frequency of 440 

Hertz. This is the mode with the fewest operational steps. Therefore let us take this mode for 

our first example. 
 
Switch on the device: 
Display: 
Tap key "E" briefly: 
The device operates now in tune 

mode. 
Display: 
 
 
Now strike the tone a' on your instrument. Two green illuminated sets of beads appear on the 

stroboscopic display. The beads move to the left if the tone is too low, or to the right if the tone 

is too high. As the tone approaches the desired pitch, the movements will slow down. At the 

correct pitch the beads will stop moving. You can recognize larger frequency deviations, when 

one of two green dots on the left or right of the stroboscopic display is lit. Depending on whether 

the desired tone is too high or too low, either the right or the left dot will be lit continuously. If 

neither of these dots shines, the tone played is at the desired pitch of less than 4 cent. 

For tuning the next higher semi-tone, tap key ">" briefly. This 

raises the CTS-5 by one semi-tone. 
Similarly, if you tap key "<", you lower the CTS-5 by one semi-

tone. 
Constantly depressing key "S" and simultaneously tapping key ">" 

briefly, will raise the device by one octave. 
Constantly depressing key "S" and simultaneously tapping key "<" 

briefly, will lower CTS-5 by one octave. 
 

If you depress either key "<" or ">" constantly, the desired function will repeat itself every 0.5 

seconds. 

2.1.1 

Automatic note adjustment  

Now depress key "A": 
The device now automatically follows the tone level of the 

played tone.  The automated switching was intentionally 

limited to two semi-tone steps, to avoid undesired tuning of 

partial tones. For the same reason the automatic mode is 

not available for the two lowest octaves.  

>1< TUNE     ->

a-1 CENTS: 00.0
<1> PITCH:440.0

 a-1 CENTS: 00.0
 <1> PITCH:440.0

 a-2 CENTS: 00.0

<1> PITCH:440.0

 a-1  CENTS:  0.0
 <1A> PITCH:440.0

Automatic on 

Note to be tuned 

Cent- adjustment 

Mode Number 

Concert pitch 

bb CENTS: 00.0

<1> PITCH:440.0

a CENTS: 00.0

<1> PITCH:440.0