Magnescale DK812SAFR, Instruction Manual

Page: 47 / 64

(E)
7
In the standard specifi cations, the minimum phase diff erence is fi xed at 50 ns for the
DK800SA and 100 ns for the DK800SB, but the minimum phase diff erences in the table
below are available as custom specifi cations.
AB quadrature
signal minimum
phase diff erence
Signal
A cycle
Counter
allowable
frequency
Maximum response
speed
Remarks
Resolution
0.1 μm
Resolution
0.5 μm
50 ns 200 ns 5 MHz
80 m/min 250 m/min
DK800SA
standard product
100 ns 400 ns 2.5 MHz
42 m/min 100 m/min
DK800SB
standard product
300 ns 1.2 μs 833 kHz
14 m/min 33 m/min
Custom
specifi cations
500 ns 2 μs 500 kHz
8.4 m/min 20 m/min
Custom
specifi cations
5-2. Output Signal Alarm
If the response speed is exceeded, the AB quadrature signal output from this
measuring unit changes to Hi impedance for about 400 ms to serve as an alarm.
Alarm section
AB quadrature signal is Hi impedance
5-3. Receiver
19.5 m or less (not including the satandard 2.5 m cable)
Line driver
Output: AB quadrature
signal, reference point
Receiver
Line receiver
AM26C32 or
equivalent
When extending the cable (Magnescale-approved cables only), extend so that the
supply voltage is +5 V ±5% at the extension target.
Use the CE22 series extension cables for bare wires (optional accessories).