SD34002g_e.doc / Sep-13
Page 4 / 60
1. Available Models
The speed meters of this series include a range of models with similar functions and properties,
but with different housings, outputs and interfaces.
All models are equipped with 4 programmable presets and 4 fast-switching transistor outputs
as well as a serial RS232 interface.
SD models provide this basic configuration only.
SA models provide an additional high-speed analogue output
SR models provide an additional RS485 communication interface
All further properties of the models are fully identical. The range of available models also
includes units with relay outputs and front thumbwheel switches.
The following table explains the details of type designation and the possible options:
S = speed meter
D = display and RS232 interface
A = display, RS232 interface and analogue output
R = display, RS232 interface and RS485 interface
3 = housing 96 x 48 mm (3.780 x 1.890’’)
and 4 high-speed transistor outputs
6 = housing 96 x 96 mm (3.780 x 3.780’’)
with 4 high-speed transistor outputs
and 4 relay outputs
0 = no thumbwheel switches on front
2 = two thumbwheel sets (4 decades each) *)
4 = four thumbwheel sets (4 decades each) *)
SD 340
*) Other combinations are possible, see section 8.2
