Cherry F-88 Manual De Usuario

20

11.4 RSI syndrome

RSI syndrome
RSI stands for "Repetitive Strain Injury". RSI arises 
due to small movements continuously repeated 
over a long period of time.
Typical symptoms are discomfort in the fingers or 
neck.
1 Set up your workspace ergonomically.
2 Change the angle of the keyboard using the rear 

supports.

3 Position the keyboard and mouse in such a 

manner that your upper arms and wrists are 
outstretched and to the sides of your body.

4 Take several short breaks, with stretching 

exercises if necessary.

5 Change your posture often.

12 Technical data

12.1 Wireless keyboard

Designation

Value

Battery type

2 rechargeable 
alkaline batteries, 
type AA (LR6)

Supply voltage

2.0 to 3.3 V SELV

Operating duration 
with charged batteries

approx. 12 months of 
normal use in an office 
setting

Charging period

approx. 4 hrs.

Transmission 
frequency

2.4 

−

 2.4835 GHz

Frequency channels

64

Range

max. 20 m

Transmission output

can be set from 

−

20 dBm to 0 dBm

Storage temperature

−

20 °C to +60 °C

Operating temperature

0 °C to +50 °C

12.2 Wireless mouse

12.3 Wireless receiver

Designation

Value

Resolution

800 dpi

Battery type

2 rechargeable 
alkaline batteries, 
type AA (LR6)

Supply voltage

2.2 to 3.3 V SELV

Operating duration 
with charged batteries

approx. 3 months of 
normal use in an office 
setting

Charging period

approx. 4 hrs.

Transmission 
frequency

2.4 

−

 2.4835 GHz

Frequency channels

64

IDs

65,536

Range

min. 3 m, max. 20 m

Transmission output

can be set from 

−

20 dBm to 0 dBm

Storage temperature

−

20 °C to +60 °C

Operating temperature

0 °C to +50 °C

Designation

Value

Sensitivity

−

80 dBm

Storage temperature

−

20 °C to +60 °C

Operating temperature

0 °C to +50 °C