Xantrex 6000 Series User manual

^fc-
6000 SERIES
wmm
TECHNICAL MANUAL
XANTREX
TECHNOLOGY INC.

XANTREX TECHNOLOGY LIMITED WARRANTY
All 6000 Series power supplies manufactured by Xantrex Technology
Inc. are guaranteed for three (3) years from the date of delivery
against defects in material and workmanship. This does not apply
to products damaged through accident, abuse, misuse, or
unauthorized repair. Xantrex shall not be liable for any special
or consequential damage of any nature. The manufacturer will
repair or replace the non-conforming product or issue credit, at
its option, provided the manufacturer's inspection establishes
the existence of a defect. Packing, freight, insurance and other
charges incurred in returning the defective products to the
manufacturer will be paid by the purchaser. If any questions
arise concerning the warranty, check with Xantrex prior to taking
any action.
When information, assistance or authorization is required, refer
to the model and serial number on the back of the unit when
contacting Xantrex.
Model;
Serial Number:

Xantrex 6000 Series DC Power Supply
TECHNICAL MANUAL
Release 2.1
TM-6000-21
XANTREX TECHNOLOGY INC,
1584 Fell Avenue
North Vancouver, B.C.
CANADA V7P 3E7
Tel: [phone]
Fax: [phone]

Table of Contents
1. Features and Specifications
1.1 Purpose 1-1
1.2 Description 1-1
1.3 Operating Modes 1-1
1.4 Equipment Features 1-2
1.5 Specifications 1-3
1.6 Optional Accessories 1-4
2. Installation and Operation
2.1 General 2-1
2.2 Initial Inspection 2-1
2.3 Installation 2-1
2.4 Electrical Check 2-2
2.5 Standard Operation 2-3
2.6 Operation with Options 2-5
2.7 Operation with IEEE488 2-9
3. Theory of Operation
3.1 Power Circuit 3-1
3.2 Meter Circuit 3-4
3.3 Option Circuits 3-5
4. Maintenance
4.1 General 4-1
4.2 Periodic Servicing 4-1
4.3 Test Equipment Required 4-1
4.4 Troubleshooting 4-1
4.5 Calibration 4-2
5. Drawings and Parts Lists
5. 1 General 5-1
5.2 Parts Ordering 5-1
5.3 Al Assembly Parts 5-2
5.4 A2 Assembly Parts 5-4
5.5 A3 Assembly Parts 5-9
5.6 A4 Assembly Parts 5-12
5.7 Main Assembly Parts 5-15
List of Illustrations
Controls and Indicators next
Assembly Interconnection 5-2
Al & A2 Assembly Schematics 5-3
A3 Assembly Schematic 5-9
A4 Assembly Schematic 5-11

CONTROLS AND INDICATORS
VOLTAGE DISPLAY CURRENT DISPLAY
OPTION STATUS INDICATORS
OVP INDICATOR
VOLTAGE BAR GRAPH
OVP ADJUST CONTROL
VOLTAGE MODE INDICATOR
VOLTAGE ADJUST CONTROL
SAFETY GROUND BINDING POST
POVCR SWITCH
REGULATED DC POWER SUPPLY
ODD ODD
D U. LI LI. LI LI
ODDDDDDPn DDDDDODDM.
VOLTAGE
CURRENT
CURRENT BAR GRAPH
CURRENT MODE INDICATOR
CURRENT LIMIT CONTROL
IMPEDANCE SWITCHED
SENSE TERMINALS
OUTPUT BINDING POSTS

SECTION 1
FEATURES AND SPECIFICATIONS
1.1 PURPOSE
This manual contains operation and maintenance instructions for
the 6000 Series of high performance laboratory power supplies.
The series consists of six basic models which can be combined
into dual, triple, and quadruple configurations in any
combination of models. The basic models are designated by a 6
prefix, followed by the voltage rating, followed by an S for a
single supply, D for a dual supply, T for a triple supply, or Q
for a quadruple supply. For example, the 6007S model number
signifies that this is a single supply rated at 0 to 7 Vdc
output. Similarly, a 6015D is a dual supply rated at 0 to 15 Vdc
per individual unit.
Five major sections form the manual divisions:
Section 1 - Description of series features and specifications.
Section 2 - Installation and operating instructions.
Section 3 - Theory of operation.
Section 4 - Maintenance and service procedures.
Section 5 - Drawings, schematics, and parts lists.
1.2 DESCRIPTION
The 6000 Series of laboratory power supplies are designed to
provide high stability, continuously variable output voltage and
current for a broad range of development and system requirements.
The 6000 Series employs precision linear regulator technology to
achieve precise regulation and low output noise levels.
1.3 OPERATING MODES
The 6000 Series has two basic operating modes: Constant Voltage
and Constant Current. In the former, the output voltage is
regulated at the front panel selected value, and the output
current varies with the load. In constant current operation, the
output current is regulated at the selected value and the output
voltage varies as a function of the output load.
1.3.1 Automatic Crossover
The automatic crossover system enables the unit to transfer
operating modes as a function of load requirements. If, for
example, the load current attempts to increase above the setting
of the current adjust control, the unit will switch automatically
FEATURES AND SPECIFICATION 1-1 Rev - (1/87

XANTREX TECHNOLOGY INC. 6000 SERIES MANUAL
from the voltage to the current regulating mode. If the load
requirements are lowered, return to the voltage mode will occur
automatically.
1.3.2 Sense Connections
To compensate for losses in power leads connected to the output,
sense connections are provided beside the output binding posts.
Connecting the positive and negative sense lines to the point
where the metered output voltage is desired will automatically
compensate for the voltage losses in the main power leads
(provided the sum of these losses do not exceed 0.5 volts). With
the voltmeter reading 10.0 volts, for example, and having the
sense lines connected directly to the load, the load voltage will
stay at exactly 10.0 volts regardless of the voltage drops in
the power leads, no matter how much current is drawn. Do not use
the sense connections without the normal power lead connections
to the output terminals, and avoid reversing positive and
negative lead connections.
1.4 EQUIPMENT FEATURES
o Simultaneous digital display of both voltage and current.
o Unique analog bar graph displays of both voltage and current
for ease of mon-itoring transient changes under varying loads.
o Ten tur^i potentiometer voltage control allowing high
resolution setting of the output voltage.
o Current adjust potentiometer allowing current limiting which
is fully adjustable from zero to the rated output.
o Automatic mode crossover into current or voltage mode.
o Impedance-switched remote sensing allowing the voltage at the
load to be displayed without switch ambiguity.
o Optimized output connections: 5-way binding posts on 0.75
inch centers - dual banana plug, with or without safety
ground.
o Flexible output configuration: Multiple units can be
connected in parallel or series without damage and are short
circuit proof.
o Modular design allowing easy replacement or repair of plug
connected sub-assemblies.
A broad range of optional features:
- Over Voltage Protection (OVP)
- External TTL Shutdown
- Remote Voltage & Current Programming
- Audible Mode Indication
FEATURES AND SPECIFICATION 1-2 Rev - (1/87)

XANTREX TECHNOLOGY INC.
6000 SERIES MANUAL
- Rear Access Connector
- IEEE488 Interface
- Output Tracking
1.5 SPECIFICATIONS
1.5.1 Electrical Specifications
Output voltage and current ratings for each model (single unit)
are as follows;
Model Number
Voltage
Current
6007
0 - 7V
0 - 6A
6015
0
- 15V
0 -
4A
6020
0
- 20V
0 -
3A
6030
0
- 30V
0 -
2A
6060
0
- 60V
0 -
lA
6120
0
- 120V
0 -
0. 5A
measured at ambient temperature. Above SO'^C, derate linearly
to zero at 70 C.
Line Regulation (103-125VAC)
Load Regulation
(0-i00% Remotely Sensed)
(10-100%)
Noise and Ripple
Temperature Coefficient
(after 30 minutes)
Drift
(Over 8 hrs. after 30 minutes)
Transient Response
(recovery to 0.05% BAND)
+/-50% load change in the range
of 25% to 100% of rated load.
Ambient Operating Range
Storage Temperature
Voltage Mode
0.01% + 2mV
0.01% + 2mV
<lmV rms
0. 015%/°C
0.02%
Current Mode
0.01% + 250uA
0.01% + 250uA
<2mA rms
0. 02%/°C
0.03%
< lOOuSec
0-30 C for full rated output.
Derate linearly to zero at
70°C.
-55 to +85''C
FEATURES AND SPECIFICATION
1-3 Rev - (1/87

XANTREX TECHNOLOGY INC.
6000 SERIES MANUAL
1.5.2 Mechanical Specifications
Height
Width
Depth
We ight
Single Supply
13 2mm
109mm
29 7mm
3. 1kg
5. 2in
4. 3 in
11.7in
6.81bs
Dual Supply
132mm
216 mm
29 7mm
6.0kg
5. 2in
8. 5in
11.7in 13.21bs
Triple Supply
132mm
3 25mm
29 7mm
9.0kg
5. 2in
12. 8in
11.7in
19.81bs
Quad Supply
132mm
4 36mm
29 7mm
12.4kg
(rack mountable)
5. 2in
17.0 in
11.7in
27.21bs
1.6 OPTIONAL ACCESSORIES
The available options for the 6000 Series power supplies are;
Over Voltage Protection (OVP), Remote ON/OFF, Isolated Tracking,
Remote Voltage Programming and/or Current Programming, Audible
Mode Indicator, and IEEE488 Interface.
The quad configuration comes with 19" rack mounting flanges and
may be used rack mounted or free standing. Single, dual and
triple configurations are configured for benchtop use but may be
19" rack mounted using an optional rack mounting adaptor.
Options are available "in^four different configurations. Option
11 provides overvoltage protection (OVP), remote programming,
remote ON/OFF, and rear panel output terminals. Option 14
provides all of the features in option 11 plus isolated tracking
and audible mode indication. Option 16 includes the IEEE488
interface allowing output voltage and current programming
directly in volts and amperes with 12-bit resolution from
IEEE488/GPIB equipped controllers. Overvoltage protection and
8-bit digital readback of voltage and current are also provided
with this option. Option 15 includes all the option 16 features
except digital readback.
1.6.1 Option Specifications
Over Voltage Protection
Trip Voltage range: 3.0V to full
output plus 10%.
Minimum setting above output
voltage to avoid false tripping:
4% of output plus 2V.
Remote ON/OFF
Standard TTL:
High = 3V minimum.
Low = 0.8V maximum.
output is OFF
output is ON
Isolated Tracking
Tracking Error:
Fixed ratio of 1% +/-1
each voltage display.
count on
FEATURES AND SPECIFICATION
1-4
Rev - (1/87)

XANTREX TECHNOLOGY INC,
6000 SERIES MANUAL
Remote Programming
Programming Voltage Coefficient:
Voltage: lV/10% of output +/-.1%
Current: lV/10% of output +/-.!%
Rear Panel Connectors
Option 11 & 14
Option 15 & 16
Programming Resolution
IEEE488
25 pin female D-sub connector
IEEE488 connector and 4 terminal
output barrier strip
Voltage: +/- 0.03%
Current: +/- 0.03%
Programming Accuracy
IEEE488
Voltage: +/- 0.05%
Current: +/- 0.05%
Readback Accuracy
IEEE488 (Option 16)
Voltage: +/- 0.5%
Current: +/- 0.5%
FEATURES AND SPECIFICATION
1-5
Rev - (1/87)

SECTION 2
INSTALLATION AND OPERATING INSTRUCTIONS
2.1 GENERAL
After unpacking, an initial inspection should be performed to
ensure that the unit is in good working order. If it is
determined that the unit is damaged, the carrier should be
notified immediately. Repair problems should be directed to the
Service Department, Xantrex Technology Inc.
2.2 INITIAL INSPECTION
The power supply comes complete with an lEC power cord set and
technical manual. The equipment should be inspected for damage as
follows:
a. Inspect panel and chassis for dents, and other signs of
obvious damage.
b. Turn front panel controls from stop to stop. Rotation should
be smooth.
c. Test the action of the power switch. Switching action should
be positive.
d. If internal damage is suspected, remove the cover and check
the components and printed circuit board for damage.
Reinstall the cover.
2.3 INSTALLATION
Before connecting the unit to an AC outlet, make sure that the
power switch is in the extended (OFF) position and the Voltage
and Current controls are in their fully counter clockwise
positions. The AC line voltage should be 117V 60Hz nominal.
A voltage control mode indicator (green) is located above the
voltage control knob. A current limit mode indicator (red) is
located above the current limit adjust knob. The power supply
outputs are red and black binding posts. The green binding post
is connected to chassis and line ground.
Connect either the (+) or (-) terminal" to the ground terminal
depending upon the desired output voltage polarity using a short
wire for this connection. If the output voltage is to be biased
relative to ground, it is recommended that a O.OluF capacitor of
sufficient voltage rating (200-1000V) be used in place of the
shorting connection. The power supply outputs may be biased by up
to a maximum of +500Vdc with respect to line safety ground.
INSTALLATION & OPERATION ,2-1 Rev - (1/87)

XANTREX TECHNOLOGY INC. 6000 SERIES MANUAL
Plug the line cord into a grounded AC outlet. Push the power
switch to turn on the power supply. The red current LED will
light and the display readings will remain zero.
To use the power supply in the Constant Voltage mode, turn the
current control to its extreme clockwise position and set the
voltage control to the desired voltage. To operate the supply in
the Constant Current mode, turn the voltage control 1/2 turn
clockwise and the current control fully counter clockwise.
Connect a shorting lead across the output terminals and set the
desired maximum value of current limit by turning the control
clockwise. Then disconnect the shorting lead from the output
terminals. The power supply will now automatically switch into
the current limiting mode (current regulation) as soon as the
preset current level is reached and will not exceed this level at
any voltage setting. As soon as the supply starts operating in
current mode, the red current mode LED will turn on.
2.4 ELECTRICAL CHECK
2.4.1 Voltage Mode
To check voltage mode operation, proceed as follows;
a. Rotate VOLTAGE and CURRENT controls fully counter clockwise.
b. Connect a DC voltmeter, rated better than .5% accuracy, to the
front panel binding posts (+ and -).
c. Connect the lEC power cord set to the unit, then to an
appropriate power source and set the POWER switch to ON.
d. Rotate the CURRENT control 1/2 turn clockwise. Slowly rotate
the VOLTAGE control clockwise and observe the digital
displays. The control range should be from zero to maximum
rated output. Compare the test meter with the voltage display
on the left. Observe the bar graph meter to see that it
tracks as the voltage rises and that the voltage mode
indicator light is ON.
e. Set the POWER switch to OFF.
2.4.2 Current Mode
To check current mode operation, proceed as follows:
a. Rotate VOLTAGE and CURRENT controls fully counterclockwise.
b. Rotate the VOLTAGE control 1/2 turn clockwise.
c. Connect a DC ammeter between the front panel binding posts (+
and -). Select leads of sufficient current carrying capacity
and an ammeter range compatible with the unit's rated current
INSTALLATION & OPERATION 2-2 Rev - (1/87)

XANTREX TECHNOLOGY INC.
6000 SERIES MANUAL
output.
. 5%.
The ammeter should have an accuracy of better than
d. Set the POWER switch to ON.
e. Rotate the CURRENT control
range should be from zero to
the test meter reading with
meter. Also check that the
the rise
is ON.
slowly clockwise. The control
the maximum rated output. Compare
the reading on the panel current
current bar graph display follows
in current and that the current mode indicator light
f. Set the POWER switch to OFF.
2.5 STANDARD OPERATION
Reliable performance of the power supply can be obtained if
certain basic precautions are taken when connecting it for use on
the lab bench or installing it in a system.
To obtain a stable, low noise output, careful attention should be
paid to factors such as conductor ratings, system grounding
techniques, and the particular way the AC input, DC output, and
remote sensing connections are made.
A conductor size that satisfies the current rating requirements
should be used. To overcome impedance and coupling effects,
however, larger gauge wire and short leads are recommended.
2.5.1 Groundi ng
Proper grounding connections should be made to avoid paths
between separate ground points. To avoid ground loop problems,
there must be only one ground return point in a power system. If
the load is ungrounded, the appropriate output binding post may
be grounded to the green safety ground binding post on the front
of the unit.
2.5.2 Load Connection
Proper connection of distributed loads is an important aspect of
power supply application. A most common mistake is to connect
leads from the power supply to one load and then from that load
to other loads. In this parallel power distribution method,
voltage at each load depends on the current drawn by the other
loads and DC ground loops are developed. Except for low current
applications, this method should not be used.
A preferred way to distribute power is by
method in which power is connected
load. In the radial method, a single
designated as the positive and negative
the radial distribution
individually to each
pair of terminals are
distribution terminals.
This pair of terminals may
the load terminals, or a
be the power supply output terminals,
distinct set of terminals specially
INSTALLATION & OPERATION
2-3
Rev - ( 1/87)

XANTREX TECHNOLOGY INC. 6000 SERIES MANUAL
established for distribution. In this scheme, there are no ground
loops and little effect of one load upon the other.
2.5.3 Multiple Supplies
The 6000 Series power supplies may operated with outputs in
series or parallel with no external protection. These supplies
consist of fully independent power supplies which have only the
power switch in common. For independent operation of each
supply, the procedure as previously outlined applies.
2.5.4 Series Operation
The series connection is used to obtain a higher voltage single
output supply. Connect the (-) terminal of one supply to the
{+) terminal of the next supply. The total voltage available is
the sum of the maximum voltages of each supply (add voltmeter
readings). Connect the positive or negative terminal to either
of the ground terminals depending on the desired output voltage
polarity.
The maximum current available to the load is equal to the current
of the lowest rated supply.
2.5.5 Parallel Operation
The parallel connection is used to obtain a higher current single
output supply. Set all outputs to the same voltage before
connecting the ( + ) and (-) terminals in parallel. The total
current available is the sum of the maximum currents of each
supply. DO NOT parallel outputs which have overvoltage
protection installed. (Blocking diodes in series with the output
may be used to parallel such outputs). The maximum voltage
available at the load is equal to the voltage of the lowest rated
supply. When two supplies are paralleled, the supply with the
higher .voltage setting will be in the current limiting mode,
while the other supply controls the output voltage.
2.5.6 Split Supply Operation
The split connection is used to obtain two positive voltages with
a common ground, or a positive-negative supply. To obtain two
positive voltages, connect the ground of one supply to the
negative terminals of both supplies. The positive terminals will
supply the required voltages with respect to common.
To obtain a positive-negative supply, connect the ground of the
left section to the negative terminal and the ground of the right
section to the positive terminal. The left section (+) terminal
then provides a positive voltage relative to ground and the right
section (-) terminal a negative voltage. The current limits
(current controls) can be set independently. The maximum current
available in split operation is equal to the lowest individual
rating of the supplies.
INSTALLATION & OPERATION 2-4 Rev - (1/87)

XANTREX TECHNOLOGY INC. 6000 SERIES MANUAL
2.5.7 Remote Sensing
Remote sensing permits regulation with respect to the point of
load connection, rather than at the output terminals of the power
supply. It corrects for load lead drops of up to a total of 0.5
volts. With remote sense leads in place, the displayed voltage
is at the load. With the sense lines disconnected, the displayed
voltage is at the output terminals. Do not operate the supply
with the sense lines connected without also connecting the
regular power lines.
2.6 OPERATION WITH OPTIONS INSTALLED
Four option cards are available as outlined in section 1.6. Be
sure to check which features are available on your unit before
following the directions below.
2.6.1 Over Voltage Protection (OVP)
The OVP circuit allows for protection of the load in the event of
a remote programming error, incorrect voltage control adjustment,
or power supply failure. The protection circuit monitors the
output and reduces the output voltage and current to zero
whenever the preset voltage limit is exceeded. The OVP
adjustment is accessible from the front of the unit directly
below the option indicators at the top left edge of each front
panel. Avoid placing undue stress on this control. The trip
threshold may be set as low as 3.0V, thus providing load
protection at low output voltage levels. A red LED on the front
panel indicates when the OVP circuit has been activated.
To set the level at which the output of the unit will be
automatically clamped to zero volts, follow this sequence:
a. Turn the OVP control fully clockwise.
b. Adjust the output to the desired trip voltage.
c. Slowly turn the OVP control counterclockwise until the red OVP
indicator lamp lights.
d. Turn the POWER switch to OFF.
e. Turn the voltage control knob to minimum.
f. Turn the POWER switch back ON and increase the voltage to
check that the power supply shuts off the output at the
desired voltage.
An over voltage condition on the output will cause the OVP
indicator to light and clamp the output to zero until the over
INSTALLATION & OPERATION 2-5 Rev - (1/87)

XANTREX TECHNOLOGY INC. 6000 SERIES MANUAL
voltage is removed and power is turned OFF and back ON to reset
the OVP circuit.
2.6.2 Remote ON/OFF
This feature is use.ful in test applications since it allows for
"soft" ON-OFF control of the output and eliminates the transients
and surges associated with mechanically switching the input
circuit. The remote ON-OFF control circuit uses a TTL compatible
input to remotely control (disable or enable) the power supply
output. A logic level signal between pin 15 (positive) and pin 2
(common) on the rear connector determines the output conditions.
TTL LOW = OUTPUT ON
TTL HIGH = OUTPUT OFF
A yellow LED on the front panel indicates when the shutdown
circuit is activated. The input line is optically isolated to
prevent ground loops and can therefore be accessed by circuits
with voltage differentials of up to 500 volts.
2.6.3 Remote Programming
The voltage and current outputs of the power supply can be
programmed by external voltage sources. Zero to full output is
linearly proportioned to a 0 to lOV control signal. Before
activating the remote program mode, ensure that the voltage and
current knobs on the front panel are in their fully
counterclockwise position. The control knobs are disabled during
remote programming and may not be used to control the output.
The remote programming mode is selected by setting the DIP switch
accessible from the rear panel as follows:
Closing switch #4 enables external voltage programming.
Closing switch #5 enables external current programming.
For both voltage and current programming, switches 4 and 5 should
be in the closed position. A flashing green LED on the front
panel indicates when the remote programming mode is enabled.
To control the voltage from zero to full output, a 0 to lOV
signal should be applied between pin 17 (positive) and pin 5
(common) on the rear connector.
NOTE
Pins 4 and 5 are at the negative sense
potential but not connected to it. Do not
tie pins 4 or 5 to any other points on the
rear connector.
Similarly, to control the current limiting from zero to full
output, a 0 to 10 volt signal should be applied between pin 16
INSTALLATION & OPERATION 2-6 Rev - (1/87)

XANTREX TECHNOLOGY INC. 6000 SERIES MANUAL
(positive) and pin 4 (common) on the rear connector. Use a
separate floating supply for voltage and current programming.
2.6.4 Isolated Tracking
Isolated tracking is useful where simultaneous turn up, turn
down, or proportional control of all power supplies in a system
is required. In the tracking mode, the slave units track the
master unit linearly.
Closing DIP switch #2 on the rear panel puts individual units
into the slave mode. The master unit is selected by closing
switch #3. Connection of the master and slave units is made by
wiring the tracking bus of all units. The bus is connected to
pins 8 and 9 of the rear connector. The tracking bus is
internally connected in multiple units so that external wiring is
not required. In this mode, only the front panel controls of
the master unit are enabled. A green LED on the front panel
indicates when the tracking circuit is activated in the slave
mode. One master unit can drive up to five slave units.
An over voltage condition in one slave supply will not affect the
outputs of the other supplies, but an over voltage condition in a
master supply will disable all the slave supplies. The outputs
of master/slave units may be wired in series as required by the
application. Do not connect master/slave units in parallel. For
faithful tracking operation, all slave units must be adjusted
with respect to the master. The following procedure should be
followed:
a. Locate the range and offset trim potentiometers (rear panel).
b. Set the master voltage to zero.
c. Adjust the offsets of the slave units to zero.
d. Set the master to the full scale voltage.
e. Adjust the range of the slaves to match the master voltage.
f. Repeat steps b to f until the errors are within specification.
2.6.5 Audible Mode Indicator
The audible mode indicator is useful in laboratory test equipment
where it is inconvenient to visually monitor the supply while
conducting tests, or in system applications where this feature
could be used as an alarm function. Three different modes are
available and are selected by setting the DIP switch on the rear
panel as follows:
Closing #6: Enables audible mode indicator and emits a pulse
tone on transition from voltage to current mode
or vice versa.
INSTALLATION & OPERATION 2-7 Rev - (1/87)

XANTREX TECHNOLOGY INC. 6000 SERIES MANUAL
Closing #7 & #6: Selects continuous tone in current mode.
Closing #8 & #6: Selects continuous tone in voltage mode.
2.6.6 Rear Panel Connectors
Options 11 and 14
To use these options, a mating 25 pin D-subminiature connector
and cable must be constructed, using the connector pin-out table
below:
-Option Card Connector J305 Detail
(D subminiature 25 pin female)
Pin
Number
Function
1
N/C
14
N/C
2
External
Shutdown Return
15
External
Shutdown Input (TTL
3
N/C
16
External Current Programming
4
External
Programming
Return
17
External
Voltage Programming
5
External
Programming
Return
18
N/C
6
+10V Refe
rence (2 mA
maximum)
19
N/C
7
N/C
20
N/C
8
Tracking
Bus (Option
14)
21
N/C
9
Tracking
Bus (Option
14)
22
Pos i tive
Sense
10
Pos itive
Output
23
Positive Output
11
Positive
Output
24
Output Return
12
Output Return
25
Return Sense
13
Output Return
NOTE; Do not tie pins 4 or 5 to any other points on J305.
Mating connector - 25 pin male ITT Cannon DB25P or equivalent.
Options 15 and 16
The IEEE488 interface connects to the IEEE488 bus with the
standard connector system, having the following pin assignment:
INSTALLATION & OPERATION 2-8 Rev - (1/87)

XANTREX TECHNOLOGY INC. 6000 SERIES MANUAL
Pin Pin
1 DlOl
13 D105
2
D102 14 D106
3
D103 15
D107
4 D104 16 D108
5 EOI
17 REN
6
DAV 18 GND
7 NRFD
19 GND
8 NDAC
20 GND
9
IFC
21 GND
10 SRQ
22 GND
11 ATN
23
GND
12
SHIELD
24
LOGI
6
7
8
9
10
11
C GND
2.7 OPERATION WITH THE IEEE488 INTERFACE INSTALLED
Options 15 and 16 provide a microprocessor-based programming
interface which allows direct programming of the output voltage
and current in volts and amperes with 12-bit resolution using the
IEEE standard 488-1978 interface bus (or General Purpose
Interface Bus [GPIB]). Over voltage protection (OVP) is standard
on both options, while digital readback of voltage and current to
8-bit precision is only supplied with option 16. Option 16 is
otherwise identical. These two options would normally be used in
conjunction with a programmable controller with IEEE488
capability. Both options come with a four terminal output
barrier strip accessible from the rear of the supply. The
following section details how to program the 6000 Series power
supply with IEEE488 capability, assuming the operator is familiar
with the IEEE488 bus structure and the particular IEEE488
controller being used.
2.7.1 Interface Functions
The following interface functions defined by IEEE Standard 488
are implemented;
SHI Source Handshake
AHl Acceptor Handshake
T6 Talker
L4 Listener
SRI Service Request
RLl Remote Local
PPl Parallel Poll
DCl Device Clear
DTI Device Trigger
El Open Collector Drivers
INSTALLATION & OPERATION 2-9 Rev - (1/87)

XANTREX TECHNOLOGY INC. 6000 SERIES MANUAL
Multiline Control Functions
The Source Handshake, Acceptor Handshake, Talker, and Listener
functions are ordinarily implemented by the interface card and
the controller, and require no action by the user. The Listen
and Talk indicators on the rear panel turn on when the power
supply is addressed to be a listener or talker. (The talker
function includes serial poll).
Service Request
Service Request is a uniline message asserted by the power supply
at Power On (nonmaskable), and for certain otherevents selected
by the user. These are Invalid Command, Output Disabled, Limit
Mode, and Over Voltage. The power supply powers on with all
service requests masked.
The SRQ indicator, a yellow LED on the front panel, turns on at
power on and whenever the power supply requests service from the
controller, and remains on until the controller conducts a serial
poll. The SRQ indicator remains on if the service request
condition remains after a poll. (Note: in Local mode, the SRQ
LED will remain on since no serial poll is conducted).
Serial Poll
In a serial poll, the controller polls each device on the bus,
one at a time. The power supply responds with an eight bit
status byte on the data lines. The following table defines each
bit, indicating what causes the bit to be set and reset, and the
state of the corresponding front panel indicators.
INSTALLATION & OPERATION 2-10 Rev - (1/87)