Valhalla 2300, Operation Manual

Page: 18 / 115

3-3-5. Drive Capability
The output impedance of Option IO-3 is 56
Ω
.
A maximum of ±100
µ
A may be drawn from
each output without exceeding specified
accuracies.
3-4. Option IOX
Option IOX provides eleven simultaneous
chassis ground referenced analog outputs
corresponding to
φ
A volts, amps, watts;
φ
B
volts, amps, watts;
φ
C volts, amps, watts; 3
φ
3-wire total watts and 3
φ
4-wire total watts.
3-4-1. Scaling and Accuracy
The scale factors and accuracies of the analog
outputs are listed below:
Full Scale Voltage and Accuracy (1 year, 1 hour warm-up)
Watts
5V ±0.5% of output ± 15mV
Volts 5V ±0.5% of output ± 15mV
Amps 5V ±0.5% of output ± 15mV
3-4-2. Calibration
Refer to Section 8-6 of this manual for the
Option IOX calibration procedure.
3-4-3. Connections
Connections to the analog outputs are made
via a rear panel mounted connector. A mating
connector is supplied with the Option IOX.
Additional connectors are available from
Valhalla Scientific under part number 05-
10248. Connector pin assignments are shown
in Figure 3-3.
3-4-4. Drive Capability
The output impedance of Option IOX is 56
Ω
.
A maximum of ±5mA may be drawn from
each output without exceeding the accuracy
specifications.
3
-5. Option LF
This option provides extended low frequency
performance (to 2Hz) at the expense of
extended settling time. Settling time is
increased by approximately 10 to 1.
Note:
When Option LF is used in conjunction
with Option TL-4, the kilowatt hour
measurement should be multiplied x2.
3-6. Option RX7
Option RX7 is a set of rack ears that allow
mounting of the 2300 in a standard 19"
equipment rack.
3-7. Option TL-4
Option TL-4 provides the 2300 with a full
talk/listen IEEE-488 digital interface. This
interface may be used for remote range
programming and for remote data acquisition.
See Section 7 for details.
3-8. Options GP-1 and GP-2
These options are IEEE-488 cables for 1
meter and 2 meter lengths respectively. These
cables may be used to connect to the interface
of Option TL-4.
3-9. Options HS-5 and HS-12
These options increase the speed at which the
2300 communicates over the IEEE-488 bus
(Section 7). A standard unit can be read at the
rate of 2.5 times per second. Option HS-5 = 5
rdgs/sec and Option HS-12 = 12.5 rdgs/sec.
3-10. Option L
This option provides greater resolution when
working with low voltages by reducing all
standard voltage ranges by a factor of 10.
Current ranges are unaffected. The voltage
ranges become: 5V, 15V, 30V, and
60V.