Clean Power for
Telecommunications
Equipment Testing
The new Agilent Technologies
E4356A Telecom dc Power Supply
provides engineers who build equip-
ment for the telecommunications
industry a clean, reliable power
source to simplify their test needs
at up to 80 Volts, up to 30 Amperes,
and up to 2100 Watts.
This power supply is ideal for
manufacturing and R&D engineers
who build equipment such as:
switches, public and private tele-
phone network equipment, PBX
systems, and dc/dc converters that
provide power to this equipment.
Since noise elimination is critical
for telecommunications applications,
the E4356A offers low noise output
so that the power supply noise does
not interfere with the testing of the
telecommunications device, thus
simplifying test system design.
Agilent E4356A
Telecom dc Power Supply
Data Sheet
Agilent Technologies
2
Dual Range Output Provides
Maximum Power
To maximize the available power
from this 2100 W power supply,
the output automatically switches
between two ranges: 0 to 70 V at
up to 30 A and 0 to 80 V at up to
26 A. In either range, when operating
at high voltages, maximum output
power is available.
Low Power Supply Output Noise
The E4356A generates less than
2 mV rms at 80 V output. This noise
specification is as much as ten times
lower than typical ATE power sup-
plies in the 2000 Watt power range.
Flexible Down-Programming for
Faster System Throughput
The E4356A can both source and sink
current. When testing DUTs that have
capacitance, the E4356A can quickly
pull down the voltage on the charged
capacitors because it can sink current
back into the power supply. As a result,
tests can execute faster because
less time is spent waiting for voltages
to change from high to low. This
capability can be used repetitively
with no limitation on how often
down programming (current sinking)
is utilized. Each and every time you
need the power supply to down
program its output from a high
voltage to a lower voltage, the
E4356A is ready to do the job.
“One-Box” Solution
The E4356A lowers test system costs
by reducing the number of boxes and
rack space needed for the system.
Previously, test solutions to make
accurate power supply voltage and
current measurements needed the
use of an external voltmeter and
current shunt. This additional equip-
ment is no longer required because
they are built into the power supply.
Thus, less rack space is required,
equipment costs are lowered, and
systems can be designed and
integrated in less time.
By combining all the programming
and measurement instrumentation
into “One-Box,” you get predictable
performance with all-inclusive
specifications from the GPIB
interface through to the output of
the power supply. The performance
is predictable because the E4356A
is calibrated as a “system,” rather
than as separate components or as
a power supply with add-on
programmer option. Calibration of
the entire power supply “system”
can be performed from the front
panel or over GPIB.
And More …
Protection Features limit voltage
(Overvoltage Protection-OVP) and
current (Overcurrent Protection-OCP)
such that when limits are exceeded,
the power supply is turned off to
protect the DUT against excessive
voltages or currents. Additionally,
when OVP occurs, the downprogram-
mer is activated to draw down
the excessive voltage and protect
the DUT.
Standard Programming Language
reduces software development time
and preserves software investment.
Software development is kept to a
minimum through the use of industry
standard SCPI (Standard Command
for Programmable Instruments)
command set. VXIplug&play drivers
are available, too.
Remote Inhibit/Discrete Fault Indicator
lines can be used to initiate an
emergency shutdown of the power
supply. Furthermore, this feature
can be used to chain together other
Agilent “One-Box” Solution power
supplies to externally disable all of
the “daisy-chained” power supplies
independent of the GPIB. Emergency
shutdown can occur in response to
an external signal or internal fault
condition. Additionally, these lines
can be used as a general purpose
digital I/O port.
Non-Volatile State Storage of up to 5
states can reduce manual setup time
or programming overhead. These
states, which include the settings
for voltage, current, and protection
features, can be stored for later
recall during program execution.
Serial Link saves GPIB addresses by
connecting up to 16 power supplies
on one primary GPIB address using
low cost serial link cables.
Product Reliability and Worldwide Support
minimizes system downtime. Agilent
Technologies’ renowned reliability
and product support provides you
with higher productivity by ensuring
your system is up and running when
you need it.
Agilent E4356A Technical Data
3
Specifications are warranted over a temperature range of 0–55° C with a resistive load and the power supply sensing at
the rear terminals, except where indicated.
Parameter Value
Output Ratings in 2 ranges High Range: 0–70 V, 0–30 A
(@ 0 to 45° C) Low Range: 0–80 V, 0–26 A
Programming Accuracy Voltage: 0.04% + 80 mV
Current: 0.1 % + 25 mA
Ripple and Noise (from 20 Hz to 20 MHz with outputs Constant Voltage rms: 2 mV
ungrounded, or with either output terminal grounded) Constant Voltage p-p: 16 mV
Constant Current rms: (measured with 60 cm leads ) 25 mA
Readback Accuracy (from front panel or over Voltage: 0.05% + 120 mV
GPIB with respect to actual output) Current: 0.1 % + 35 mA
Load Regulation (change in output voltage or current Voltage: 0.002% + 3 mV
for any load change within ratings) Current: 0.005% + 2 mA
Line Regulation (change in output voltage or current Voltage: 0.002% + 3 mV
for any line change within ratings) Current: 0.005% + 2 mA
Transient Response Time (for the output voltage to recover to its previous level within 0.1% of the rated voltage < 900 µs
or 20 mV, whichever is greater, following any step change in load current up to 50% of the rated current)
Supplemental Characteristics
Supplemental characteristics are intended to provide information useful in applying the power supply by describing non-warranted performance that has
been determined by design or type testing.
Output Programming Maximum Voltage: 81.9 V
Maximum Current: 30.71 A
Maximum Overvoltage Protection: 96 V
Typical Programming Resolution Voltage: 20 mV
Current: 7.5 mA
Overvoltage Protection: 150 mV
Overvoltage Programming Accuracy 1.5 V
Maximum Input VA and Power with full load: 3800 VA; 2600 W,
with no load: 100 W
AC Input Ranges (selectable via internal switching) 200 Vac1nominal: 174-220 Vac
230 Vac nominal: 191-250 Vac
Frequency: 47-63 Hz
Output Terminal Isolation
(maximum, from chassis ground) ±240 Vdc
Maximum AC Line Current Ratings 200 Vac nominal: 19 A rms (25 A fuse)
230 Vac nominal: 19 A rms (25 A fuse)
Remote Sensing Capability Voltage Drop Per Lead: Up to 1/2 of rated output voltage.
Maximum available voltage at load Subtract voltage drop in load leads
from maximum output voltage rating.
Command Processing Time (average time for output voltage to change 20 ms
after receipt of digital data when the unit is connected directly to the GPIB)
Output Voltage Rise Time/Fall Time (time for output to change 100 ms/200 ms
from 90% to 10% or from 10% to 90% of its total excursion with full resistive load) (excludes command processing time)
1. Below 185 Vac, derate output voltage linearly to 56.5 V
Specifications
Supplemental Characteristics (continued)
Full-load Programming Speed Up Time/Down Time 200 ms/475 ms
(time for output to settle within 80 mV of the final value (excludes command
with full resistive load) processing time)
No-load Programming Discharge Time 650 ms
(time for output to fall to 0.5V when programmed (excludes command
from full voltage to zero volts) processing time)
Monotonicity Output is monotonic over
entire rated voltage, current,
and temp. range.
Nonvolatile Savable States Memory Locations: 5 ( 0 through 4)
GPIB Interface Capabilities Languages: SCPI (default); Compatibility
Interface: AH1, C0, DC1, DT1, E1, LE4,
PP0, RL1, SH1, SR1, TE6
Serial Link Capabilities Maximum # of units: 16
(multiple units sharing one Maximum total cable length: 30 m (100 ft)
GPIB primary address)
Recommended Calibration: 1 year interval
Safety Compliance Complies with: CSA 22.2 No.231, IEC 348
Designed to comply with: UL 1244
RFI Suppression Complies with: CISPR-ll, Group 1, Class B
Weight Net: 27.7 kg (61 lb)
Shipping: 31.4 kg (69 lb)
Top
Side
Rear
425.5mm
16.75"
574mm
22.6"
640mm
25.4"
68mm
2.67"
132.6mm
5.2"
145.1mm
5.71"
12.7mm
0.5"
128mm
5.04"
Accepts Wire
AWG 12-22
1/4" x 1"
Unthreaded
Hole on
each Bussbar
IM
VP
+IP
-IP
+P
+S
-S
-LS +LS
Rear Connector Detail
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Product specifications and descriptions in
this document subject to change without notice.
Copyright © 1999, 2000 Agilent Technologies
Printed in U.S.A. June 1, 2001
5968-6603E
Agilent Technologies
