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Voltmeter Settings: 

 

The menu for settings of the Voltmeter functions can be 
called, if the display is set to Voltage (V) and the key 2 is 
pressed and hold for more than 3 seconds until “Set” is 
flashing. 
 
In the menu, key 2 is used to save the corresponding 
setting and to jump to the next menu item. 
 
Adjustment of the

 System Voltages:

 

The nominal voltage rates for board and starter battery 
must be set once. Switching between 12 V and 24 V is 
possible for both.  
 
Adjustment of the 

Background Illumination:

 

The background illumination can be adapted from bright 
to completely dark in steps of 10 % according to the 
requirements. 

 

General Information: 

Once a year: 

 

Check the connection cable for correct contact and damage.  

 

Cleaning:

 

We recommend to use a damp microfibre cloth with pure water or, if required, with water with a few soap.  Take care, 
that no liquid flows along the display screen or the edges of the front panel.  

 
Never use solvents, aggressive household cleaners, and scratching or abrasive agents or objects to clean the 
front panel and particularly the display itself.  
 

 

Trouble-Shooting: 

No display at all: 

a)

 

Reverse battery: Check!Battery is totally discharged, below 7 Volts: Recharge immediately! 

c)

 

Connection cable is interrupted, damaged, or it is not inserted: Check! 

 
„Hieroglyphs“ on the display: 

a)

 

The internal check programs of the unit have found an (memory) error: 
Withdraw the cable connector for 10 seconds. After that, an initial start-up is to be executed as described above.

 

 
Technical Data: 

 

System:

 

Nominal Voltage: 

12 V, 24 V 

Operating Voltage Range: 

8...32 V  

Current Consumption: 

1..0.40 mA, depending on illumination 

 

Display Unit (LCD Display): 

Technology: 

LC Display with specific segments 

Representation Surface: 

49 x 28 mm 

Illumination: 

white LED 

Dimensions (mm): 

80 x 85 x 24 

Assembly Dimensions Opening  
Electronic System (mm): 

approx. 66 x 72 

Weight: 

approx. 55 g 

 
Ambient Conditions, Humidity of Air: 

max. 95 % RH, no condensation

 

Summary of Contents for 1256

Page 1: ...se the delivered drilling jig which has been designed to consider combination with further display panels If possible the rear cutout opening should be covered with electrically nonconducting material to ensure efficient protection of the electronic system and full utilization of the storage space which might be located behind Terminals Connection Board For the voltage measurement of the board bat...

Page 2: ...e display is empty Display with and without illumination As soon as the voltmeter is operated the display illumination will be switched on and will remain activated for 3 minutes If there is no operation during this time the illumination will be switched off automatically The display continues showing the same data The display illumination is reactivated by pressing any key The proper function of ...

Page 3: ... along the display screen or the edges of the front panel Never use solvents aggressive household cleaners and scratching or abrasive agents or objects to clean the front panel and particularly the display itself Trouble Shooting No display at all a Reverse battery Check Battery is totally discharged below 7 Volts Recharge immediately c Connection cable is interrupted damaged or it is not inserted...

Page 4: ...tery room Always use the same car fuses for replacement The unit is not equipped with parts which can be replaced by the user Non observance may result in injury or material damage Never use solvents or aggressive household cleaners for cleaning of the display The warranty period is 24 months from the purchase date against presentation of the sales slip or invoice The warranty will be void in case...

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