| 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 |
