Acces 104-QUAD-6, User Manual

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Manual 104-QUAD-8 21
Chapter 7: Specification
Power Consumption

+ 5 Volts 260mA (typical, no load on +5V fused output pins)
+ 5 V Fused Outputs Two 0.5A Resettable fuses
Input Section

Receiver Type AM26LS32

Configuration per Encoder Phase A, Phase B and Index

Number of Channels 4 or 8

Common mode input range +/- 7 V maximum

Differential Input Range +/- 25 V maximum
Differential voltage values are at the noninverting (+)
input terminals with respect to the inverting (-) input
terminals

Sensitivity +/- 200 mV

Hysteresis 50 mV typical

Termination 1k
Ω when differential jumper is installed

Input bias (Positive pins) 100
kΩ to +5V
(Negative pins) 100k
Ω to ground

Single-ended threshold (Negative pins) +1.4V via pull up/down combo
Only when single-ended jumper is installed (Rev C
PCBs and newer)
Counter Section

Counter Type: LS7267 24 bit Dual Axis Quadrature Counter

Quadrature Clock Frequency 4.3 MHz maximum

Quadrature Separation 57 ns min

Quadrature Clock Pulse Width 115 ns min

Index Pulse width 85 ns min

Filter Clock (FCK) PC/104 Bus OSC 14.318 MHz
Interrupt Controller Section

Controller Type CPLD

Interrupts Jumper selectable (2-7,10-12,15)

Interrupt Sources FLG1 outputs from LS7267

Addressing ISA bus address is set by jumpers (100-3E0h)
Environmenta
l

Operating Temperature: 0
˚C to +70˚C (optional -40˚C to +85˚C)

Storage Temperature: -50
˚C to +120˚C

Humidity: up to 95% RH, non-condensing