Elmo Tuba Digital Servo Manuale Utente

Potentiometer Format 

Single-ended 

Operating Voltage Range 

0 ~ 5 V supplied by the Tuba 

Potentiometer Resistance 

100 Ω ~ 1 kΩ … above this range, linearity may 
be affected detrimentally 

Input Resistance 

100 kΩ 

Resolution 14 

Bit 

Encoder output format 

 A, B, Index 

 Differential outputs 

 Quadrature 

Interface RS-422 

Port B1 output current capability 

 Driving differential loads of 200 Ω on  

INDEX/INDEX-, CHB/CHB- and CHA/CHA-

 pairs 

Port B2 output current capability 

 

INDEXO/INDEXO-, CHBO/CHBO- and 
CHAO/CHAO-

 pairs are not loaded 

Available as options 

 Two simultaneous buffered outputs of main- 

incremental encoder input 

 Two simultaneous emulated encoder outputs 

of the analog encoder input 

 Two simultaneous emulated encoder outputs 

of the resolver input 

 Two simultaneous emulated encoder outputs 

of the Tachometer Input 

 Two simultaneous emulated encoder outputs 

of the Potentiometer Input 

 Buffered output of auxiliary input  

Maximum frequency 

f

MAX

 : 5 MHz pulses/output  

Index (marker) 

Length of pulse is one quadrature (one quarter 
of an encoder cycle) and synchronized to A&B 

 

Tuba Installation Guide 

MAN-TUBIG (Ver. 1.3)

 

 

A-12