Citizen Systems CTD 504 Benutzerhandbuch

中文

中文

1.  In power-off mode, press and hold the 

START

 button for 6 

seconds. When 

 starts fl ashing, release the button.

2. Press the 

START

 button again to switch from 

 to 

.

3.  Wait until the CTD504 automatically shuts off and restarts. It 

is now ready to use.

1.  In power-off mode, press and release the 

START

 button to 

enter Memory Recall Mode. Press the 

START

 button again. 

The LCD screen displays the fi rst memory set number with 
the latest measuring result.

2. Press the 

START

 button repeatedly to scroll through all 12 

stored results in a loop.

1.  While holding the 

START

 button, press and release the 

|

/O

 button. The 

CTD504 starts up.

2.  When the LCD displays the previous measuring result, release the 

START

 

button. 

3.  To check memory erasing, turn the CTD504 off, and enter Memory Recall Mode 

again.

• 

 fl ashes: You can still measure, but the accuracy may not impaired.

• 

 lights or no reaction at all: Change the battery as soon as possible. 

1.  Press the upper part of the battery cap to unlock it. 
2.  Insert the tip of a tool into the gap at the side of the battery 

compartment. Remove the worn-out battery.

3.  Insert a new CR2032 lithium battery into the CTD504, 

according to the polarities in the fi gure. Push it fi rmly into 
place with a “click”, then replace the cap.

12. Without regular recalibration, the results may not be accurate. Every CTD504 is 

calibrated right after production. See “Warranty and Recalibration” for details.

13. Keep the CTD504 away from sunlight and dusty places.

Important Notice:
The CTD504 does not require a probe cover during use. It is important to 
clean and disinfect the CTD504 before and after each use. See “Cleaning and 
Disinfection” for details.
For measurement:
 •  When asleep, pressure on the ear may cause higher-than-normal temperature. 

Wait a few minutes, and then measure again.

 •  Clean your external ear before measuring. To ensure an accurate result, keep 

your ear free from obstructions or excess earwax.

 •  The measuring results from the left and right ears may differ slightly. We 

recommend measuring in the same ear.

 •  Before measuring, the user and the CTD504 should be in a steady room 

temperature for at least 30 minutes. The user should also rest for 30 minutes 
after exercising.

1. Press the 

|

/O

 button. The LCD screen displays all digital 

segments.

2.  If the CTD504 has saved past results, the LCD screen 

automatically displays the latest result.

3. When 

 or 

 fl ashes with a short beep, the CTD504 is ready to use.

1.  To improve accuracy, follow the illustrations below. For adults, pull the ear up 

and back. For infants and children, pull the ear back.

2.  Fit the probe tip into the ear canal, and then press the 

START

 button. Release the button and wait a few seconds 

until you hear a long beep. 

3.  Take the CTD504 out of the ear canal. The LCD displays the 

latest measuring result. Without any operation, the CTD504 automatically 
shuts off after 1 minute.

Note: Before re-measurement, wait 1 – 3 minutes.