Sony Digiruler PL21, Инструкция по эксплуатации

Страница: 31 / 52

29
PL23
Resolution 10
µ
m/20
µ
m/50
µ
m/100
µ
m (See P.19)
Minimum phase difference (Tw)
2.5
µ
s/5
µ
s/10
µ
s/20
µ
s
Connectable reference point sensor
SET-P15-1 (option)
Output signal and Zero point output signal
Note
The reference point signal output is in synch with
the output pulse.
By selecting with the switch on the board (see
Fig.3-3, S201 No.1, A/AB), the signals as shown
are output. The reference point signal is
generated in both directions the scale moves but
should only be used unidirectionally. Make sure
the LED lights upon detecting the reference point.
Note
The displacement is detected about every 100
µ
s to generate pulses corresponding to
the displacement of the scale or head.
As the A/B output or Up/Down output signal, unlike common rotary encoder, is artificially
generated, it is sometimes output at the present pulse width (Tw) even when the scale
movement is slow. It is necessary to use a receiving circuit that can receive the present
pulse width.
PCA
＊ PCA
PCB
＊ PCB
PCZ
＊ PCZ
PCZ
＊ PCZ
4Tw
Tw
Reference point input signal
Output pulse
Reference point output pulse
When S201 No.1 is set to A:
Pulse width = 4 x Tw
When S201 No.1 is set to AB:
Pulse width = 1 x Tw