Operating Manual
Power Supply NGMO1
and
Power Supply NGMO2
192.1500.21 and 192.1500.24
Version 4.00 / 07-2004
Operating Manual
Power Supply NGMO1 and
Power Supply NGMO2
Edition: July 2004
Version: 4.00
All rights reserved, including translation into foreign languages. No part of this manual may be reproduced or reworked using electronic systems, duplicated or distributed in any form (photocopying, microfilm or any other process), not even for instructional purposes, without written
permission from ROHDE & SCHWARZ GmbH & Co. KG.
© Disclosure or reproduction of this documentation, utilization and communication of its contents
is not permitted, without express approval. Infringements will lead to claims for compensation. All
rights reserved in the event of patents being granted or registration of a protected design.
ROHDE & SCHWARZ
GmbH & Co. KG
Mühldorfstraße 15
D-81671 München
Phone: 49 (0)1805 124242
Fax: 49 (0)89 4129-13777
Internet: www.rohde-schwarz.com
E-mail: CustomerSupport@rohde-schwarz.com
Printed in the Federal Republic of Germany. Subject to alternations.
Safety Instructions
This unit has been designed and tested in accordance with the EC Certificate of Conformity and has left the
manufacturer’s plant in a condition fully complying with safety standards.
To maintain this condition and to ensure safe operation, the user must observe all instructions and warnings
given in this operating manual.
Safety-related symbols used on equipment and documentation from R&S:
Observe
operating
instructions
1. The unit may be used only in the operating
conditions and positions specified by the manufacturer. Unless otherwise agreed, the following
applies to R&S products:
IP degree of protection 2X, Pollution severity 2,
overvoltage category 2, altitude max. 2000 m.
The unit may be operated only from AC supply
mains fused with max. 16 A.
2. For measurements in circuits with voltages Vrms
> 30 V, suitable measures should be taken to
avoid any hazards.
(e.g. use of appropriate measuring equipment,
fusing, current limiting, electrical separation,
insulation).
3. If the unit is to be permanently wired, the PE
terminal of the unit must first be connected to
the PE conductor on site before any other connections are made. Installation and wiring of the
unit should only be performed by qualified technical personnel.
4. For permanently installed units without built-in
fuses, circuit breakers or similar protective devices, the supply circuit must be fused such as
to provide suitable protection for the users and
equipment.
5. Prior to switching on the unit, it must be ensured
that the nominal voltage set on the unit matches
the nominal voltage of the AC supply network.
Weight
indication for
units >18 kg
PE terminal Ground
terminal
Danger!
Shock
hazard
If a different voltage is to be set, the power fuse
of the unit may have to be changed accordingly.
6. Units of protection class I with disconnectible
AC supply cable and appliance connector may
be operated only from a power socket with
grounding contact and with the PE conductor
connected.
7. It is not permissible to interrupt the PE
conductor intentionally, neither in the incoming
cable nor on the unit itself, as this may cause
the unit to become electrically hazardous.
Any extension lines or multiple socket outlets
used must be checked for compliance with
relevant safety standards at regular intervals.
8. If the unit has no power switch for disconnection
from the AC supply, the plug of the connecting
cable is regarded as the disconnecting device.
In such cases it must be ensured that the power
plug is easily reachable and accessible at all
times (length of connecting cable approx. 2 m).
Functional or electronic switches are not suitable for providing disconnection from the AC
supply.
If units without power switches are integrated in
racks or systems, a disconnecting device must
be provided at system level.
Warning! Hot
surfaces
Ground
continued overleaf
Attention!
Electrostatic
sensitive
devices
require
special care
Safety sheet i
Safety Instructions
9. Applicable local or national safety regulations
and rules for the prevention of accidents must
be observed in all work performed.
Prior to performing any work on the unit or
opening the unit, the latter must be disconnected from the supply network.
Any adjustments, replacements of parts,
maintenance or repair may be carried out only
by authorized R&S technical personnel.
Only original parts may be used for replacing
parts relevant to safety (e.g. power switches,
power transformers, fuses). A safety test must
be performed after each replacement of parts
relevant to safety.
(visual inspection, PE conductor test, insulationresistance, leakage-current measurement,
function test).
10. Ensure that the connections with information
technology equipment comply with IEC950 /
EN60950.
12. Equipment returned or sent in for repair must be
packed in the original packing or in packing with
electrostatic and mechanical protection.
13. Electrostatics via the connectors may damage
the equipment. For the safe handling and operation of the equipment, appropriate measures
against electrostatics should be implemented.
14. The outside of the instrument is suitably cleaned
using a soft, lint-free dust cloth. Never use
solvents such as thinners, acetone or similar, as
they may damage the front panel labelling or
plastic parts.
15. Any additional safety instructions given in this
manual are also to be observed.
11. Lithium batteries must not be exposed to high
temperatures or fire.
Keep batteries away from children.
If the battery is replaced improperly, there is
danger of explosion. Only replace the battery by
R&S type (see spare part list).
Lithium batteries are suitable for environmentally
friendly disposal or specialized recycling. Dispose of them in appropriate containers only.
Do not short-circuit the battery.
Safety sheet ii
Contents Power Supply NGMO
Contents
1 Operator Information 1-1
1.1 Preface 1-1
1.2 NGMO-Versions 1-1
1.2.1 NGMO1 1-2
1.2.2 NGMO2 1-2
1.3 Purpose of the Handbook 1-2
1.4 Explanation of Symbols 1-3
1.5 Inspection 1-4
2 Safety 2-1
2.1 General 2-1
2.2 Safety Instructions 2-1
3 Unit Description 3-1
3.1 Introduction 3-1
3.2 Overview 3-2
3.2.1 Accessories 3-3
3.3 Specifications 3-4
3.4 Function Description 3-7
3.4.1 Communication 3-7
4 Operation 4-1
4.1 Operation Elements 4-1
4.2 Start-Up 4-5
4.2.1 NGMO2 Line Power Connection and Power-up 4-5
4.2.2 Main Functions of the NGMO2 4-5
4.2.3 Menu 4-9
4.3 Test Connections 4-20
4.3.1 Remote Sense 4-20
4.3.2 Local Sense 4-21
4.3.3 Output Impedance 4-21
4.4 Factory Defaults 4-22
Version 4.00 / 07-2004 1
Power Supply NGMO Contents
4.5 Measurements 4-23
4.5.1 Reading back Voltage (V), Current (I), DVM 4-23
4.5.2 Dynamic Measurements 4-23
4.6 Status Structure 4-28
4.6.1 Status Byte and SRQ 4-28
4.6.2 Queues 4-28
5 IEEE Commands 5-1
5-1 IEEE-488.2 common commands and queries 5-1
5-2 FORMAT command summary 5-5
5-3 OUTPut command summary 5-6
5-4 SENSE command summary 5-9
5-5 SOURCE command summary 5-17
5-6 STATUS command summary 5-20
5-7 CONFIG command summary 5-22
5-8 SYSTEM command summary 5-23
5-9 Signal-oriented measurement-command summary 5-28
5-10 Remote calibration command summary 5-30
6 Ordering Information 6-1
2 Version 4.00 / 07-2004
Figures Power Supply NGMO
Figures
Fig. 3-1 NGMO2, Front view 3-2
Fig. 3-2 NGMO2, Rear view 3-3
Fig. 3-3 NGMO2, Pin codes 3-7
Fig. 3-4 Circuit diagram: Mobile phone connected to the NGMO2 3-8
Fig. 4-1 NGMO2, Operation elements on the control panel 4-1
Fig. 4-2 Four-wire sense connection 4-20
Fig. 4-3 Local sense connections 4-21
Fig. 4-4 Sample values 4-24
Fig. 4-5 Pre-trigger and post-trigger acquisition 4-25
Fig. 4-6 Measurement repetition 4-26
Fig. 4-7 Status model structure 4-29
Version 4.00 / 07-2004 3
Power Supply NGMO Tables
4 Version 4.00 / 07-2004
Operator Information Power Supply NGMO
1 Operator Information
1.1 Preface
We are pleased that you have decided to invest in an
ROHDE & SCHWARZ Power Supply NGMO.
We would naturally be glad to answer any application questions you
may have.
We look forward to a productive partnership.
Your After Sales Team at
GmbH & Co. KG
1.2 NGMO-Versions
NOTE:
The Power Supply is available in different versions.
This Operating Manual contains descriptions for all versions.
In chapters with differences in the description of the individual
Power Supplies, such differences will be specially emphasized.
The designation NGMO is used wherever the description applies
for all versions.
If you use this manual for a NGMO1:
Just ignore all descriptions and specifications which belong to
the channel B of the power supply.
This is also valid for all status structure description and IEEE
commands in chapter 4 and chapter 5 of this manual.
If you call a remote command for channel B, the IEEE error
message 403 (invalid or non existant channel) is returned when
calling “system:error?“.
4.00 / 07-2004 1-1
Power Supply NGMO Operator Information
1.2.1 NGMO1
The Power Supply NGMO1 consists of the following assemblies:
• Keyboard with LC Display
• Processor board
• Analog board for Channel A
• Power supply unit
1.2.2 NGMO2
The NGMO2 is equipped with two analog boards and therefore delivers
two separate voltage sources and signal channels. Apart from that the
Power Supplies are absolutely identical.
1.3 Purpose of the Handbook
The operating manual contain all the information you will need to use
the Power Supply NGMO.
This manual describes
• safe installation and assembly,
• appropriate and safe operation,
of the Power Supply.
Read the operating instructions carefully before you use the Power
Supply. The operating instructions contain important information which
must be acted on.
Apart from the information in the operating instructions, the statutory
safety regulations that apply in the country of use, the relevant technical standards and the regulations concerning the safe and appropriate
use of electrical equipment must also be observed.
The operating instructions belong to the unit and must always be available at the place of use of the Power Supply NGMO.
The owner must observe national safety and environmental protection
regulations.
1-2 4.00 / 07-2004
Operator Information Power Supply NGMO
1.4 Explanation of Symbols
The Power Supply NGMO was produced according to the generally accepted regulations governing the technology and current status of science and technology.
However, it is impossible to design hazard-free electrical equipment.
In order to guarantee a sufficient level of safety for personnel working
with the Power Supply NGMO, safety regulations must be observed.
Certain sections of the text are highlighted as follows:
ELECTROCUTION HAZARDS!
Observe the relevant safety regulations when operating electrical devices.
Observe the operating instruction.
WARNING!
Failure to follow the instructions could damage the Power
Supply NGMO.
ATTENTION!
Failure to follow the instructions may cause spurious results.
NOTE:
Emphasizes significant details, the observance of which is of
particular importance and which facilitate operation.
4.00 / 07-2004 1-3
Power Supply NGMO Operator Information
1.5 Inspection
The Power Supply NGMO2 was carefully inspected electrically and
mechanically before shipment. After unpacking the unit from the shipping carton, check for any obvious signs of physical damage that may
have occured in transit. Remove any protective film over the screen.
Report any damage to the shipping agent immediately. Save the original packing carton for any future shipments. The following items are
included with every order:
• 1 Power Supply NGMO,
• 1 power cable,
• 2 output connectors,
• 1 Operating manual
1-4 4.00 / 07-2004
Safety Power Supply NGMO
2 Safety
2.1 General
NOTE
Only personnel authorized by ROHDE & SCHWARZ may open
the Power Supply NGMO.
If the safety regulations for the Power Supply NGMO are disregarded, ROHDE & SCHWARZ GmbH & Co KG will not assume
liability for any resulting damage and all warranties will become
null and void.
2.2 Safety Instructions
ELECTROCUTION HAZARDS!
Observe the relevant safety regulations when operating electrical devices.
Observe the operating instruction.
ATTENTION!
Failure to follow the instructions may cause spurious results.
WARNING!
Failure to follow the instructions could damage the Power
Supply NGMO.
4.00 / 07-2004 2-1
Power Supply NGMO Safety
2-2 4.00 / 07-2004
Unit Description Power Supply NGMO
3 Unit Description
3.1 Introduction
The Power Supply NGMO is accommodated in a 1/2-19”, 2 HU (high
units) enclosure.
The NGMO is more, than just a power supply for conventional test and
measurement equipment, - it is an accurate, multipurpose electronic
device with two separate supply and measurement channels (NGMO2
only, NGMO1 only Channel A) which can be used as the following:
• high speed voltage source,
• programmable DC load,
• precise digital multimeter,
• sampling oscilloscope,
This unit fulfils all requirements of latest electronic battery-powered
communication products.
The high speed and the high reliability are features which are very important in a production environment.
The NGMO is an ideal device for testing complex high-tech products
such as mobile phones. With the NGMO, it is possible to create reproducible and realistic powering conditions.
4.00 / 07-2004 3-1
Power Supply NGMO Unit Description
3.2 Overview
Fig. 3-1 NGMO2, Front view
1 pushbutton, POWER
2 key 1, CHN, A/B/DVM
3 key 6, OUTP., ON/OFF
4 key 2, U-SET
5 key 7, I-SET
6 key 3, OVP
7 key 8, OCP
8 key 4, SAVE
9 key 9, RECALL
10 key 5, MENU
11 key 0, LOCAL
12 key, SHIFT
13 key, ENTER
14 arrow key, right
15 arrow key, left
16 rotary knob, VARIATION
17 display
18 unit foot
.
3-2 4.00 / 07-2004
Unit Description Power Supply NGMO
Fig. 3-2 NGMO2, Rear view
1 Channel A Connector
2 Channel B Connector
3 Mains, 120/230 VAC
4 Voltage Selector
5 IEEE488.2 Connector
6 RS485/232 Connector
7 Control I/O Connector
3.2.1 Accessories
• 1 power cable,
• 2 output connectors,
• 1 operating manual
4.00 / 07-2004 3-3
Power Supply NGMO Unit Description
3.3 Specifications
Channel 1 Channel 2
Constant-voltage source
- Voltage setting 0 to 15 V 0 to 15 V
- Resolution 1 mV 1 mV
- Deviation 0.05 % +5 mV 0.05 % +5 mV
•with ±10 % AC supply variation
0.5 mV 0.5 mV
• from 10 to 90 % load change 0.01 % + 3 mV 0.01 % + 3 mV
- Transient recovery time on load
change (0.1 A to 1.6 A) to recover
within 20 mV
with wide bandwidth
• direct connected <35 µs <35 µs
• at “long” leads, sensed <50 µs <50 µs
with narrow bandwidth
• direct connected <80 µs <80 µs
• at “long” leads, sensed <100 µs <100 µs
- Transient voltage drop on load
change (0.1 A to 1.6 A)
with wide bandwidth
• at “long” leads, sensed <60 mV <60 mV
• ripple and noise <1 mV
• output impedance
0 to 1 Ω, settable in 10 mΩ
steps
RMS <1 mVRMS
0 to 1 Ω, settable in 10 mΩ
steps
• voltage compensation up to 1 V (4 V) per lead up to 1 V (4 V) per lead
Constant-current source
- Peak current (1 ms) 7 A 7 A
- Current setting
• within 1.8 to 5 V 0 to 5 A 0 to 5 A
• outside 1.8 to 5 V 0 to 2.5 A 0 to 2.5 A
• resolution 1 mA 1 mA
3-4 4.00 / 07-2004
Unit Description Power Supply NGMO
• deviation from full scale 10 mA 10 mA
with ±10 % AC supply variation
from 10 to 90 % load change 2.5 mA 2.5 mA
• current sink capability 2.8 A (0 to 5 V) derating up
Voltage measurement
- Range -5 to 25 V -5 to 25 V
• resolution 1 mV 1 mV
• deviation from full scale 0.03 % +3 mV 0.03 % +3 mV
- Measurement time 2 ms to 200 ms settable 2 ms to 200 ms settable
• averaging 1 to 10 values 1 to 10 values
Current measurement
- Ranges 7 A/0.5 A/5 mA 7 A/0.5 A/5 mA
• resolution 200 µA/10 µA/0.1 µA 200 µA/10 µA/0.1 µA
1 mA 1 mA
2.8 A (0 to 5 V) derating up
to 1 A at 15 V
to 1 A at 15 V
• deviation from full scale 15 mA/1 mA/10 µA 5 mA/1 mA/10 µA
- Measurement time 2 ms to 200 ms settable 2 ms to 200 ms settable
• averaging 1 to 10 values 1 to 10 values
Dynamic measurement
- Sample buffer 1 to 5000 points 1 to 5000 points
- Sample time 10 µs to 1 s in 10 µs steps 10 µs to 1 s in 10 µs steps
- multiple trigger 1 to 100 1 to 100
- Triggering system
• ranges 5 A/0.5 A 5 A/0.5 A
• settable levels
range 5 A 0 A to 7 A in 200 µA steps 0 A to 7 A in 200 µA steps
range 0.5 A 0 mA to 0.5 A in 10 µA
steps
• DVM -5 V to 25 V in 1 mV steps -5 V to 25 V in 1 mV steps
0 mA to 0.5 A in 10 µA
steps
4.00 / 07-2004 3-5
Power Supply NGMO Unit Description
- Analysis of values PEAK, MIN,
HIGH, LOW,
RMS,
AVERage
Protection Functions
- OVP 1.5 to 22 V, settable 1.5 to 22 V, settable
- OCP 0 to 5 A, settable 0 to 5 A, settable
- Open-sense lead detection
General Data
- Remote control IEEE488.2, RS232C
- Control inputs 2 x measurement trigger, 2 x output inhibit
- Control outputs 2 x complete, 4 x relay driver, fault
±(0 to 4 V) about set
voltage, settable
PEAK, MIN,
HIGH, LOW,
RMS,
AVERage
±(0 to 4 V) about set
voltage, settable
- AC supply 110/115 V and 220/230 V selectable, 50 to 60 Hz
- AC input power 220 VA max. 220 VA max.
- Dimensions 210.8 mm x 87.6 mm x 420 mm without rear and buttom
feet
- Mass 7.5 kg
Environmental Data
- Humidity 85 % at 35 °C non-condensing
- Operating temperature range 0 to 45 °C
- Nominal temperature range 5 to 40 °C, 0 to 35 °C full power
- Storage temperature range -40 to 70 °C
- Temperature coefficient 18 to 28 °C (full accuracy)
5 to 40 °C (0.1 x specification)/°C
3-6 4.00 / 07-2004
Unit Description Power Supply NGMO
3.4 Function Description
3.4.1 Communication
Fig. 3-3 NGMO2, Pin codes
Channel Relay Connector, rear panel, SUB 15, male
Pin Function Pin Function Signal
1 DVM- 1 RELOUT 1 output, relay driver, open collector 28 VDC/200 mA
2 DVM+ 2 RELOUT 2 output, relay driver, open collector 28 VDC/200 mA
3 FORCE- 3 RELOUT 3 output, relay driver, open collector 28 VDC/200 mA
4 FORCE- 4 RELOUT 4 output, relay driver, open collector 28 VDC/200 mA
5 SENSE- 5 FAULT output, fault signal, open collector 28 VDC/200 mA
6 SENSE+ 6 NC not used not used
7 FORCE+ 7 NC not used not used
8 FORCE+ 8 GND GND signal GND
9 GND GND signal GND
10 INHIBIT_B input, external inhibit signal TTL 0 ... 12 VDC
11 TRIGGER_B input, external inhibit signal TTL 0 ... 12 VDC
12 INHIBIT_A input, external inhibit signal TTL 0 ... 12 VDC
13 TRIGGER_A input, external inhibit signal TTL 0 ... 12 VDC
14 COMPL_B output, complete signal, open
collector
15 COMPL_A output, complete signal, open
collector
28 VDC/200 mA
max.
28 VDC/200 mA
max.
4.00 / 07-2004 3-7
Power Supply NGMO Unit Description
Fig. 3-4 Circuit diagram: Mobile phone connected to the NGMO2
The NGMO2 provides:
• 2 channels15 V/2.5 (5) A with 7 A
pk
• fast output transient response
• sample buffer for fast current and voltage measurements
• internal and external triggers for current and voltage measurements
• separate DVM’s
• DC-load capability up to 2.8 A
• high voltage setting resolution
• precise low-current measurements
• very low ripple and noise
• settable output impedance for battery emulation
• OVP/OCP
• open sense detection
• auxiliary inputs/outputs (output inhibit, relay, complete)
• small dimensions (2 HU, half 19”)
• interfaces: IEEE488.2, RS232 and (USB)
• fast programming
• effective manual operation
3-8 4.00 / 07-2004
Operation Power Supply NGMO
4 Operation
4.1 Operation Elements
Fig. 4-1 shows the Operation Elements for the Power Supply NGMO2.
NOTE:
Operation elements and Start-up functions of the Power Supply
NGMO1 are identical with the NGMO2.
Operation elements for channel B must in this case be ignored.
Readings in the LC Display correspond with the respective Power
Supply.
Fig. 4-1 Power Supply NGMO2, Operation elements on the control panel
4.00 / 07-2004 4-1
Power Supply NGMO Operation
Function
element
Type Function
pushbotton
rotary knob
keys ARROW KEYS (left and right)
POWER
This is the mains switch to turn the NGMO on and off.
VARIATION
This knob has various functions:
• to increase or decrease numerical values in a menu function,
to select options within the menu.
• When no other function is selected, the LCD contrast can be
adjusted with the arrow keys.
• The arrow key moves the cursor to the numerical input you want to
make,
• or to vary a setting within the menu.
• The arrow keys can also be used to abort the recall or the save
function.
key
key
key
key
1; CHANNEL A; CHANNEL B; 1; Digital Voltmeter A;
Digital Voltmeter B
By pressing this key, channel A or channel B and the associated DVM
can be selected. The selected DVM shows an applied external voltage.
2; Voltage setting
Press U-SET to set the output voltage you have selected.
The value you want and, if necessary, modified by pressing the SHIFT
key or by turning the variation knob.
3; Overvoltage protection
By pressing the OVP key you can set the max. +force output voltage
with respect to the internal ground. If the voltage peaks exceed the set
value, the NGMO switches off automatically to protect the unit under
test.
4; SAVE
With the SAVE key all settings can be stored in one of the memory
locations 1 to 9, except the recall settings, IEEE address, serial
interface data, calibration data, which are stored in memory location 0.
4-2 4.00 / 07-2004
Operation Power Supply NGMO
Function
element
Type Function
key
key
key
5; MENU
Pressing the MENU key, allows you to select any of the 36 NGMO
available optional functions with the variation knob.
A menu need not necessarily have submenus.
6; OUTPUT; ON/OFF
The ON/OFF key is used to turn the output of the current from the
selected Power Supply (A, B or both) on or off.
7; Current setting
Press I-SET to set the output current limit of the channel you have
selected. The value you want can be entered and modified after you
press the SHIFT key or by turning the variation knob.
The max. settable value is 5 V at 5 A. On a higher value than 5 V the
max. current output is limited to max. 2.5 A.
key
key
key
key
8; Overcurrent protection
Pressing this key allows you to choose between the options “current
protection mode” or “current limit mode”. When the “current protection
mode” has been selected, the output is switched off when the max.
output current exceeds the set current limit.
9; RECALL
The RECALL key is used to recall all settings stored in memory
locations 1 to 9.
Memory location 0 contains the factory default settings which can not
be modified.
0; LOCAL
With the LOCAL key the unit operation can be switched from remote
control back to local control.
• SHIFT
When the second function of the SHIFT key is selected, numerical
values and a decimal point can be entered. Cancel a selected function
by pressing the SHIFT key twice.
key
ENTER
Pressing the ENTER key numerical entries made using the SHIFT key
or deactivates a setting function.
4.00 / 07-2004 4-3
Power Supply NGMO Operation
General Note:
• All function keys in the middle of the control panel (CHN 1
A/B/DVM to 0 LOCAL and SHIFT) are assigned two functions, e.g.
apart from the main setting functions, the numerals 0 to 9 and the
decimal point printed on the keys can be entered to alter values
when the shift key has been pressed.
• UUT stands for unit under test in the sequel.
4-4 4.00 / 07-2004
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