Rohde & Schwarz NGMO1 User manual

Version 4.00 / 07-2004
Operating Manual
Power Supply NGMO1
and
Power Supply NGMO2
192.1500.21 and 192.1500.24

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 re-
produced or reworked using electronic systems, duplicated or distributed in any form (photo-
copying, 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: [phone]
Fax: [phone]
Internet: www.rohde-schwarz.com
E-mail: [email protected]
Printed in the Federal Republic of Germany. Subject to alternations.

Safety Instructions
Safety sheet i
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
Weight
indication for
units >18 kg
PE terminal Ground
terminal
Danger!
Shock
hazard
Warning! Hot
surfaces
Ground Attention!
Electrostatic
sensitive
devices
require
special care
1. The unit may be used only in the operating
conditions and positions specified by the manu-
facturer. 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 con-
nections are made. Installation and wiring of the
unit should only be performed by qualified tech-
nical personnel.
4. For permanently installed units without built-in
fuses, circuit breakers or similar protective de-
vices, 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.
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 suit-
able 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.
continued overleaf

Safety Instructions
Safety sheet ii
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 discon-
nected 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, insulation-
resistance, leakage-current measurement,
function test).
10. Ensure that the connections with information
technology equipment comply with IEC950 /
EN60950.
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. Dis-
pose of them in appropriate containers only.
Do not short-circuit the battery.
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 op-
eration 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.

Contents Power Supply NGMO
Version 4.00 / 07-2004 1
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

Power Supply NGMO Contents
2 Version 4.00 / 07-2004
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

Figures Power Supply NGMO
Version 4.00 / 07-2004 3
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

Power Supply NGMO Tables
4 Version 4.00 / 07-2004

Operator Information Power Supply NGMO
4.00 / 07-2004 1-1
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?“.

Power Supply NGMO Operator Information
1-2 4.00 / 07-2004
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 techni-
cal 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 avai-
lable at the place of use of the Power Supply NGMO.
The owner must observe national safety and environmental protection
regulations.

Operator Information Power Supply NGMO
4.00 / 07-2004 1-3
1.4 Explanation of Symbols
The Power Supply NGMO was produced according to the generally ac-
cepted regulations governing the technology and current status of sci-
ence 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 electri-
cal 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.

Power Supply NGMO Operator Information
1-4 4.00 / 07-2004
1.5 Inspection
The Power Supply NGMO2 was carefully inspected electrically and
mechanically before shipment. After unpacking the unit from the ship-
ping 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 origi-
nal 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

Safety Power Supply NGMO
4.00 / 07-2004 2-1
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 disre-
garded, 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 electri-
cal 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.

Power Supply NGMO Safety
2-2 4.00 / 07-2004

Unit Description Power Supply NGMO
4.00 / 07-2004 3-1
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 im-
portant 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 repro-
ducible and realistic powering conditions.

Power Supply NGMO Unit Description
3-2 4.00 / 07-2004
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

Unit Description Power Supply NGMO
4.00 / 07-2004 3-3
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

Power Supply NGMO Unit Description
3-4 4.00 / 07-2004
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 mVRMS <1 mVRMS
• output impedance 0 to 1 Ω, settable in 10 mΩ
steps
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

Unit Description Power Supply NGMO
4.00 / 07-2004 3-5
• deviation from full scale 10 mA 10 mA
with ±10 % AC supply variation 1 mA 1 mA
from 10 to 90 % load change 2.5 mA 2.5 mA
• current sink capability 2.8 A (0 to 5 V) derating up
to 1 A at 15 V
2.8 A (0 to 5 V) derating up
to 1 A at 15 V
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
• 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
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

Power Supply NGMO Unit Description
3-6 4.00 / 07-2004
- Analysis of values PEAK, MIN,
HIGH, LOW,
RMS,
AVERage
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 ±(0 to 4 V) about set
voltage, settable
±(0 to 4 V) about set
voltage, settable
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
- 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