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1-5
mode. In this mode the voltage of the negative output can be set
lower than that of the positive output. The tracking ratio control
allows the negative supply's output to be set to any value
between a maximum that is within ±5% of the positive supply's
output and a minimum that is less than 0.5 volts. Once a ratio is
established by the tracking ratio control, the ratio of the positive
output voltage to the negative output voltage remains constant
as the ±20V voltage control varies the 0 to +20V output over its
range.
The front panel also contains a line switch, three overload
indicators for +6V output, +20V output, and -20V output, a
voltmeter and an ammeter, and three push-button meter
switches. The push buttons select one of the supply's three
outputs for display. The voltmeter and ammeter always moni-
tor any one supply simultaneously. In addition to the standard
115 Vac ± 10% 47 to 63 Hz input, two other line voltage options
are available for nominal inputs of 100 and 230 Vac. The sup-
ply is furnished with a detachable 3-wire grounding type line
cord. The ac line fuse is in an extractor type fuseholder on the
rear heat sink.
LINE FUSE
The line fuse is located by the ac line receptacle. Check the
rating of the line fuse and replace it with the correct fuse if
necessary as indicated below. These are slow-blow fuses.
Line Voltage Fuse Agilent Part No.
100/115 Vac 1.6 A 2110-0918
230 Vac 1.0 A 2110-0599
SPECIFICATIONS
Table 1 lists detailed specifications for the power supply.
Table 1. Specifications
AC INPUT
Standard: 115 Vac ± 10%, 47-63 Hz, 115 VA, 84 W
OE9:
100 Vac ± 10%, 47-63 Hz, 115 VA, 84 W
OE3:
230 Vac ± 10%, 47-63 Hz, 115 VA, 84 W
DC OUTPUT and OVERLOAD PROTECTION
0 to ±20 V Outputs: Maximum rated output current is 0.5 A.
Short circuit output current is 0.55 A ± 5% and a fixed cur-
rent limit circuit limits the output of each supply to this maxi-
mum at any output voltage setting. Unbalanced loads within
current rating are permitted.
0 to +6 V Output:
Maximum rated output current is 2.5 A at
6 V. The maximum available output current decreases with
the output voltage setting. A current foldback circuit limits
the output to 2.75 A ± 5% at 6 volts and, with decreasing
voltage, reduces the current limit linearly to 1 A ± 15% at
zero volts (short circuited).
TRACKING ACCURACY
The +20 V and -20 V outputs track within 1% with the
TRACKING ratio control in the Fixed position. (In variable
tracking ratio mode, the negative tracking output can be
adjusted from less than 0.5 V to within ±5% of the setting of
the positive output.)
LOAD REGULATION
All Outputs: Less than 0.01% plus 2 mV for a full load to
no load change in output current.
LINE REGULATION
All Outputs: Less than 0.01% plus 2 mV for any line volt-
age change within rating.
PARD (Ripple and Noise)
All Outputs: Less than 0.35 mV rms/1.5 mV p-p (20 Hz-20
MHz).
Common Mode Current (CMI):
Less than 1 mA for all
outputs (20 Hz-20 MHz).
OPERATING TEMPERATURE RANGE
0 to 40
o
C for full rated output. At higher temperatures, out-
put current is derated linearly to 50% at 55
o
C maximum
temperature.
TEMPERATURE COEFFICIENT
All Outputs: Less than 0.02% plus 1 mV voltage change
per
o
C over the operating range from 0 to 40
o
C
after 30 minutes warm-up.
STABILITY (OUTPUT DRIFT)
All Outputs: Less than 0.1% plus 5 mV (dc to 20 Hz) dur-
ing 8 hours at constant line, load and ambient
after an initial warm-up time of 30 minutes.
LOAD TRANSIENT RESPONSE TIME
All Outputs: Less than 50 msec for output recovery to
within 15 mV of nominal output voltage
following a load change from full load to half
load, or vice versa.
OUTPUT VOLTAGE OVERSHOOT
All Outputs: During turn-on or turn-off of ac power, output
plus overshoot will not exceed 1 V if the out-
put control is set for less than 1 V. If the con-
trol is set for 1 V or higher, there is no
overshoot.
METER ACCURACY: ±(0.5% of output + 2 counts) at
25
o
C±5
o
C
METER RESOLUTION
All Output: Voltage 10 mV Current 10 mA
DIMENSIONS
212.3 mmW x 88.1 mmH x 269.2 mmD
(8.354 inW x 3.469 inH x 10.591 inD)
WEIGHT: 3.8 kg(8.4 lbs) net, 5.1 kg(11.3 lbs) shipping