Hardware Configurations; Fault Circuitry (Jp1) (Rev A Only); Marker Pulse Jumper (Jp4); Reset Circuitry (Jp5) - Aerotech MXH Series Hardware Manual

Introduction

1.4. Hardware Configurations

The amplified input signals at Test Points TP9 and TP10 (refer to
configured for normal 3.8 V peak-to-peak signals, see the explanation in
board has an acceptable range of amplified input signals from 2V peak-to-peak to 4V peak-to-peak.
The following sections discuss the hardware used to configure the MXH multiplier board. The hardware is
accessible by removing two screws securing the dust cover to the board.

1.4.1. Fault Circuitry (JP1) (Rev A Only)

The fault circuitry detects input signal magnitudes below 0.5 Volt peak-to-peak. If a fault is detected, all
outputs are set to a high impedance state. Fault detection is enabled with jumper JP1 in. Removing JP1
defeats fault detection. For jumper location, refer to

1.4.2. Marker Pulse Jumper (JP4)

The marker pulse jumper in the default setting of JP4 sets the pulse width to the minimum pulse width. In
this case, the marker is one output pulse wide and is qualified with the input marker. When JP4 is out, the
marker signal of the encoder is an output and is the same width as the input pulse and no qualification is
performed. For jumper location, refer to

1.4.3. Reset Circuitry (JP5)

The default setting (jumper in) of the reset circuitry jumper (JP5) resets the board if a fault is detected. The
faults that can occur are a loss of 5V, loss of clock signal, and low input signal magnitudes.
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Figure 1-6.
Figure 1-6.
Chapter 1
MXH Multiplier Option Manual
Figure 1-6 for locations) should be
Section 1.3. However, the multiplier
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