Valhalla 2300, Руководство по эксплуатации

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connected across the 600 volt, 100 amp and
∅
A push-buttons to select these ranges on
power-up.
10-3-12. IEEE
Interface
The schematic for this section may be found
on 1000-070. The IEEE interface is
composed of microprocessor IC5 and its
support chips. IC's 2-4 interface the
microprocessor bus to the IEEE bus. The
microprocessor program is contained in
EPROM IC6. The microprocessor bus is
interfaced to the 2300 display board by
peripheral interface adapters IC's 8-11. The
microprocessor accepts commands from the
IEEE bus and converts them to data that the
2300 can understand. Description of the
internal workings of the IC's on this board is
beyond the scope of this manual. The
manufacturer's data sheets should be
consulted for further information.
10-3-13. Option IOX
The schematic for this section may be found
on 2300-073. The outputs of the current and
voltage receivers are applied to unity gain
inverting amplifiers IC1-3 and their associated
components. The gain and offset of each
amplifier are adjustable to allow calibration.
The outputs of the watts receivers are applied
to inverting amplifier IC's 4-5 and their
associated components. The watts receivers
are also applied to summing amplifier IC6 and
associated components to provide total-watts
analog output.
10-4. Models 2301, 2300L and 2301L
The circuit descriptions above referred to the
drawings of Model 2300. The Models 2301,
2300L and 2301L use identical circuitry and
the descriptions apply to these models as well.
The following differences should be noted:
1) The signal processing board schematic is
the same.
2) The main PCB schematic for Models
2301 and 2301L is drawing number 2301-
071.
3) The display PCB schematic for Models
2301 and 2301L is drawing number 2301-
072.
4) The main PCB and display PCB assembly
drawings for Models 2301 and 2301L are
drawing numbers 2301-601 and 2301-
602.
5) Refer to the Parts List section of this
manual for the corrected parts lists for
these models.