Menu System

Display mode

You can set up the display items as follows:

1Select a display item Turn the Control knob.

The display items are switched in the following sequence.

Display

Information

"VOLT"

Indicates the source voltage (V).

"CURRT"

Indicates the current consumption (A).

"TEMP"

Indicates the internal temperature (°F/°C).

"DEMO"

Allows you to set up the display demonstration.

NOTE

When the internal temperature is -22°F/-30°C or less, "-22F"/"-30C" is displayed.

Display Item Adjustment

You can adjust the display items as follows.

1Select a display item Turn the Control knob.

2Adjust the display item Press the Control knob.

The setup items and set values are switched as follows.

Display
Range
Adjustment Item

"TEMP"

---F (Fahrenheit) /

The Fahrenheit or Centigrade temperature unit can be selected

---C (Centigrade)

for the Display mode.

 

 

 

 

"DEMO"

OFF/

When set to ON, the "VOLT", "CURRT", and "TEMP" items are

ON

displayed repeatedly.

 

NOTE

Normally the setting listed at the top of the chart is the original setting.

Band Reject Filter

The acoustic properties of vehicle compartment tend to cause oscillation due to resonance or unclearness of sound due to standing waves at certain frequencies. The band reject filter can solve the problems of resonance or unclear sound with minimum influence on the sound quality because it eliminates only the frequencies causing resonance or standing waves.

0 dB

Frequency

■Adjustment method:

The band reject filter cuts only the limited frequencies to minimize influence on the sound quality. Therefore, its effect cannot be obtained unless the cutoff frequencies are set accurately to the frequencies causing resonance and standing waves. The band reject filter can be adjusted according to what you feel through your ears, but we recommend the use of a signal generator or a spectrum analyzer with a fine frequency measurement capability for the adjustment.

•Adjustment using a signal generator:

Output a sine wave, vary its frequency to find the frequencies at which the vehicle compartment resonates or volume increases (standing waves occur), and set the B.R.F. FREQUENCY control to the position with which the resonance and standing waves disappear.

•Adjustment using a spectrum analyzer:

Output white noise (sound in which all frequencies are at a certain level), find the peak frequency observed on the spectrum analyzer, and set the B.R.F. FREQUENCY control to the position with which the peak observed on the spectrum analyzer disappears.

English 7