Simex SLIK-638, Руководство пользователя

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User manual - COUNTER SLIK-638
6. PRINCIPLE OF OPERATION
After turning the power supply on, device ID and software version are showed on the
display, next the data
stored while power supply off
are restored and device goes to the
selected operation mode.
6.1. MEASUREMENT MODE
In the counting mode (normal mode), the device counts pulses “delivered” to counting
inputs A and B (Figure 6.1) depends on selected function. There are available four functions:
addition of pulses from A and B inputs (“
Funct ”=” A
╫
b ”), subtraction of pulses from A and B
inputs (“ Funct ” = ” A -- b ”), quadrature counting with standard resolution (“ Funct ” =” quad-1 ”) ,
quadrature counting with increased resolution (“
Funct
” =”
quad-4
”).
a)
b)
Figure 6.1. The counting principle of the SLIK counters
(parameters: muL =”1”, div =”1”, oFFSEt =”0”):
a) modes ” A+B ”, ” A-B ”; b) modes ” quAd-4 ”, ” quAd-1 ”
16
A input
B input
A + B
A - B
0 1 2 3 4 5 7 9 10 11
0 1 2 1 2 1 1 1 0 -1
Display result
for mode:
A input
B input
quAd-4
quAd-1
0 1 2 3 4 5 6 7 8 9 10 11 10 9 8 7 6 5 4 3 2
0 1 2 3 2 1
Display result
for mode: