Response Electronics CL6011B Dokumentacja Strona 56

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4-26 Input and Output Cards
UM4.6:CS6003 Original — December 1991
Step 9: Turn the signal generator on, and if necessary, allow time for
the oscillator to stabilize. Set the pulse or waveform generator
to approximately 2 Hz. Adjust the output level so the peak
output voltage is between 3.5 and 30 volts. If a pulse
generator is used, the minimum pulse width is 50
microseconds.
Step 10: Observe the calibrator indicators labeled MUX LS BYTE and
the calibrator numerical display. The MUX LS BYTE indicators
should blink on and off in a binary counting pattern and the
numerical display should increment by one with every pulse. If
some or all of the MUX LS BYTE indicators fail to light or if
the numerical display fails to count properly then the pulse
count input card requires repair.
Step 11: Set the pulse or waveform generator to approximately 7
kilohertz.
Step 12: Observe the calibrator indicators labeled MUX MS BYTE and
the calibrator numerical display. The MUX MS BYTE
indicators should blink on and off in a binary counting pattern
and the calibrator numerical display should increment very
rapidly. If some or all of the MUX MS BYTE indicators fail to
light or if the numerical display fails to count properly, then the
pulse count input card requires repair.
Step 13: Repeat steps 7 through 12 for input channels 2, 3, and 4.
Deenergize the signal generator output before disconnecting
and reconnecting at the breakout terminals.
Step 14: Turn off and disconnect the pulse or waveform generator.
Step 15: Set the calibrator ON/OFF switch to OFF.
Step 16: Disconnect the umbilical cable and remove the pulse count
input card.
4.1.8 Type DM6381 Weigh Scale Interface Card
The weigh scale and the interface card must be less than 1000 feet
(304.8 m) apart. For field wiring between the weigh scale and the
interface card, use 18 AWG (0.82 mm
2
) twisted-pair, shielded cable. Do
not route the cable through conduits or trays with other cables used to
transmit analog signals.
4.1.8.1 Switch Settings — Type DM6381
The Type DM6381 Weigh Scale Interface uses two switches, S1 and S2,
shown in Figure 4-9.
4
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