Technical specifications |
Power consumption |
Not supplying power to external encoders: |
+5 V325 mA typical, 460 mA max. |
Typical supplying 1 Dynamics Research Incremental Optical Rotary Encoder part number M21AAFOBB2E-2500: |
+5 V1058 mA typical, 1479 mA max. |
InputTable |
Receiver type |
SN75ALS175 quad differential receiver |
Configuration |
Each channel consists of PhaseA input, PhaseB input and Index input; each input switch / jumper selectable as single-ended or differential |
Differential |
- PhaseA, PhaseB and Index (+) inputs at user connector routed to (+) inputs of differential receiver.
- PhaseA, PhaseB and Index (-) inputs at user connector routed to (-) inputs of differential receiver.
|
Single -ended |
- PhaseA, PhaseB and Index (+) inputs at user connector routed to (+) inputs of differential receiver.
- PhaseA, PhaseB and Index (-) inputs at user connector routed to ground. (-) inputs of differential receiver routed to +3 V reference.
|
Number of channels |
4 |
Common mode input voltage range |
±12 V max. |
Differential input voltage range |
±12 V max. |
Input sensitivity |
±200 mV |
Input hysteresis |
50 mV typ. |
Input impedance |
12 kO min. |
Propagation delay |
27 ns max. (tpLH, tpHL) |
Absolute maximum input voltage: |
Differential ±14 V max. |
Miscellaneous |
- Meetsor exceeds ANSI EIA/TIA-422-B, EIA/TIA-423-B, RS-485.
- MeetsITU recommendations V.10, V.11, X.26, X.27.
- Designedfor multipoint busses on long lines and in noisy environments.
|
Counter |
Counter type |
LS7266R1 24-bit Dual-axis Quadrature Counter |
Quadrature mode: |
Clock frequency 1.2 MHz max. Separation 100 ns min. Clock pulse width 400 ns min. Index pulse width 300ns min. |
Count mode: |
Clock frequency 30MHz max, (25 MHz max Mod-N mode) Clock A -high pulse width 14ns min. Clock A -low pulse width 14ns min. Filter clock (FCK) 10MHz |
Digital filter rate |
10MHz, software selectable divider (1 to 256 in single steps) |
Crystal oscillator (FCK source): |
Frequency 10MHz Frequency accuracy 100ppm |
Interrupt controller |
Controller type |
8259 Programmable Interrupt Controller |
Configuration |
Polled mode only |
Interrupts |
2, 3, 5, 7, 10, 11, 12 and 15 |
Interrupt enable |
Programmable |
Interrupt sources |
All Carry/Borrow outputs from LS7266R1, all Index inputs |
Environmental |
Operating temperature range |
0 to 70 °C |
Storage temperature range |
-40 to 100 °C |
Humidity |
0 to 90% non-condensing |