LeCroy WS-DCADAP User manual

Accessory
WS-DCADAP
EXTERNAL DC ADAPTER
User's Manual

WaveSurfer is a trademark of LeCroy Corporation.
f MicrosoftWindows is a registered trademark or a trademark o
Corporation in the United States and other countries.

EXTERNAL DC ADAPTER User’s Manual
Foreword
Thank you for purchasing LeCroy's EXTERNAL DC ADAPTER.
Before using this instrument, please read this manual thoroughly to
gain a good understanding of it. After reading, please keep the
manual in a safe place.
This manual describes notes on use and basic usage of the
EXTERNAL DC ADAPTER.
Notes
Parts of the contents of this manual may be modified without prior
notice for improvements in performance and functions.
Reproduction or reprinting of the contents of this manual without
prior permission from LeCroy is prohibited.
If you have questions about this instrument, please contact LeCroy
Corporation. (Refer to the contact address given at the end of this
manual.)
Revision History
June 2005: 1st edition
i
KML049611 A1-713750

WaveSurfer Accessory
Checking the Packing Content
On delivery of the instrument, check each item. If any of the items are
missing or there is any damage, immediately contact LeCroy or the sales
office in charge.
[Items to be present]
•DC Adapter (EXTERNAL DC ADAPTER) ................................1
Accessories
•WS-DCADAP cable.....................................................................1
•Safety Ground cable ……………………………………………..1
•User's manual ...............................................................................1
Sending Back for Repairs
If the instrument is inoperable, send it back to LeCroy Corporation.
(Refer to the contact address given at the end of this manual.) We will
repair it without charge as long as it is under warranty.
When sending back the instrument, explicitly describe the following:
product name, serial number, description of the trouble,
name/post/phone number of the contact person.
ii

Table of Contents
Safety Requirements....................................................................... 2
Safety Symbols & Terms................................................................. 2
Operating Conditions ...................................................................... 2
Product Disposal and Recycling...................................................... 5
Overview ......................................................................................... 6
Configuration................................................................................... 6
Units and Devices............................................................................ 7
(a) DC Adapter................................................................................ 7
(b) WS-DCADAP Cable................................................................... 8
Operating Procedures ..................................................................... 9
(a) Mounting the DC Adapter on the Oscilloscope .......................... 9
(b) Connecting the DC Power Cord to the Oscilloscope ............... 10
(c) Connecting the WS-DCADAP Cable.........................................11
(d) Connecting the WS-DCADAP Cable to the Battery ................. 13
(e) Starting Up the Oscilloscope.................................................... 14
(f) Turning Off the Oscilloscope.................................................... 16
(g) Turning Off the DC Adapter and the Battery ............................ 16
Indicators....................................................................................... 17
Protective Functions...................................................................... 18
Specifications ................................................................................ 20
(a) Product Specifications - Electrical............................................. 20
(b) Product Specifications - Mechanical......................................... 21
(c) Certifications............................................................................. 21

WaveSurfer Accessory
Safety Requirements
This section contains information and warnings that must be
observed to keep the DC Adapter operating in a correct and safe
condition. You are required to follow generally accepted safety
procedures in addition to the safety precautions specified in this
section.
Safety Symbols & Terms
The following safety symbols & terms may appear on the product
and they alert you to important safety considerations.
This symbol is used where caution is required. Refer to the
accompanying information or documents in order to protect
against personal injury or damage to the instrument.
This symbol warns of a potential risk of shock hazard.
The CAUTION sign indicates a potential hazard. It calls
attention to a procedure, practice or condition which,
if not followed, could possibly cause damage to equipment.
If a CAUTION is indicated, do not proceed until its
conditions are fully understood and met.
The WARNING sign indicates a potential hazard. It calls
attention to a procedure, practice or condition which, if not
followed, could possibly cause bodily injury or death.
If a WARNING is indicated, do not proceed until its
conditions are fully understood and met.
CAUTION
WARNING
Operating Conditions
Before using this product, ensure that its operating environment will
be maintained within these parameters:
Temperature : 5 to 40 oC
Humidity : Maximum relative humidity 80 % for temperatures
upto31
oC decreasing linearly to 50 % relative
humidityat40
oC.
Altitude: Up to 2,000 m
2

EXTERNAL DC ADAPTER User’s Manual
The design of the DC Adapter has been verified to conform to the
applicable safety standards (EN 61010-1:2001, UL 61010-1 2nd
Edition and CAN/CSA C22.2 No.61010-1-04) per the following
limits:
Installation (Overvoltage) Category I
(All mains isolated terminals)
Pollution Degree 2
Protection Class I
CAUTION
To avoid personal injury or damage to the WS-DCADAP or the
WaveSurfer oscilloscope connected to it, review and comply with
the following safety precautions.
•Use only as intended.
The WS-DCADAP is intended to be used only with the LeCroy
WaveSurfer series oscilloscopes to supply the DC drive power to
the scope. Use of the WS-DCADAP and/or the scope it is
connected to in a manner other than specified may impair the
protection mechanisms.
•Connect and disconnect properly.
Avoid damage to cables thru excessive bending.
•Do not use in wet/damp or explosive atmospheres.
•For indoor use only.
The WS-DCADAP is intended for indoor use and should be
operated in a clean, dry, environment.
•Do not operate with suspected failures.
Do not use WS-DCADAP if any part is damaged. All
maintenance should be referred to qualified service personnel.
•Keep product surfaces clean and dry.
3

WaveSurfer Accessory
•Do not float the WaveSufer oscilloscope when it is powered by
DC Adapter. Use the safety ground cable to connect
oscilloscope to earth ground.
When operating the WaveSurfer oscilloscope from AC line power
with the standard power cord the oscilloscope is connected to
earth ground via the third-wire in the AC power cord. When
operating the WaveSufer oscilloscope with the WS-DCADAP,
there is no connection to earth ground and the oscilloscope is
floating.
Operating the oscilloscope in this manner causes accessible metal
parts to be at the same potential of the probe ground leads. This
results in a dangerous condition with the potential of elevated
voltages present on the oscilloscope causing a shock hazard to the
operator and also places stress on the power transformer insulation.
Over time this stress may result in dangerous failures which create
a shock and fire hazard even during properly grounded operation.
Without AC power and the standard AC power cord the
WaveSurfer oscilloscope is not grounded and will be floating
unless the included grounding cable is connected between the
oscilloscope and earth ground. If the oscilloscope probes or
channels are connected to circuits or devices that have voltages
less than 30Vrms or 42Vpk from earth ground the ground cable is
not required. For any circuits where voltages greater than
30Vrms or 42Vpk may be present the ground cable must be
connected. If the operator is unsure if a higher voltage is present
the ground cable should be used. Operating the oscilloscope in
the presence of these voltages without properly grounding the
instrument may result in electrical shock which can result in
serious personal injury or loss of life.
It is also important to remember not to connect a grounded device
such as a computer or printer to the oscilloscope while it is
floating. To connect a grounded device to the WaveSurfer
oscilloscope while using the WS-DCADAP the ground cable must
be connected between the oscilloscope and earth ground.
4

EXTERNAL DC ADAPTER Use
r
’s Manual
WARNING
To avoid electric shock, always connect scope ground terminal to
earth ground when WaveSurfer oscilloscope is powered by DC
Adapter.
CLEANING
The outside of the WS-DCADAP hardware should be cleaned with a
soft cloth dampened with either deionized / distilled water or
isopropyl alcohol. Allow the surface to dry completely before
returning the instrument to service.
USE AND MAINTENANCE
The WS-DCADAP is a high quality, precision instrument. To
maintain accuracy, mechanical shock should be avoided, as well as
damage to the cables through excessive bending. All maintenance
and component replacement should be referred to qualified
personnel.
Product Disposal and Recycling
This electronic product is subject to disposal and
recycling regulations that vary by country and region.
Many countries prohibit the disposal of waste electronic
equipment in standard waste receptacles.
For more information about proper disposal and
recycling of your LeCroy product, please visit
www.lecroy.com/recycle.
5

WaveSurfer Accessory
Overview
This adapter is an accessory device specially designed for the
WaveSurfer 400 Series Oscilloscopes. The purpose of the adapter is
to supply the DC drive power to the oscilloscope.
Normally the oscilloscope is used with the power cord connected to
an AC power line. Mounting this adapter allows the WaveSurfer to
operate with the voltage supplied from a 12 V automotive battery or
other DC power source.
This instruction manual describes how to mount the adapter on the
oscilloscope, how to connect the adapter to the battery and the
oscilloscope, and how to operate the adapter.
Thoroughly read the contents of this instruction manual and
understand its contents before using the accessory.
Configuration
This adapter is used with it mounted on the rear of the WaveSurfer
oscilloscope as shown in Fig. 1. Connect the adapter to a battery
using the special input cable (WS-DCADAP cable). The input
voltage supplied from a battery is converted to 24 Vdc and output to
the DC IN connector at the rear of the oscilloscope.
NOTE If commercial AC power is supplied through the AC
power cord connected to the rear of the oscilloscope, the
oscilloscope operates giving a higher priority to the AC
power supply.
Rear of WaveSurfer oscilloscope
DC adapter
(WS-DCADAP)
Battery
(or other DC power unit)
Special input cable
(WS-DCADAP cable)
DC power cord
DC IN
OUT
IN
Figure 1 DC-driven Configuration of the Oscilloscope
(with the DC Adapter)
6

EXTERNAL DC ADAPTER User’s Manual
Units and Devices
(a) DC Adapter
Figure 2 shows the outside view of the adapter.
Knob screw
Power switch
LED lamp (green)
DC power cord
Nameplate
Input/output indication label
Connector for the input cable
(WS-DCADAP)
Rubber foot (5 locations)
Unit: mm
Figure 2 Outside View of the DC Adapter
7

WaveSurfer Accessory
(b) WS-DCADAP Cable
This is an input cable specially designed for the DC adapter.
Figure 3 shows the outside view of the cable.
(DC adapter side) (Battery/DC power side)
(Red alligator clip)
(Black alligator clip)
Unit: mm
Figure 3 Outside View of the WS-DCADAP Cable
8

EXTERNAL DC ADAPTER User’s Manual
Operating Procedures
To use this product, follow the steps below.
(a) Mounting the DC Adapter on the Oscilloscope
1. Place the rear sides of the DC adapter and the WaveSurfer
oscilloscope so that they face each other. Align the upper and
lower lugs on the left side of the adapter (viewed from the rear
side of the oscilloscope) with the lug holes, and then insert the
lugs into the holes by sliding the adapter leftward.
Rear of WaveSurfer
oscilloscope DC adapter
Lugs (upper and lower)
Figure 4 Mounting the DC Adapter A (Left Side)
2. Then align the upper and lower lugs on the right side of the
adapter (viewed from the rear side of the oscilloscope) with the
lug holes and insert them into the holes. (See Figure 5 below.)
Lugs
Figure 5 Mounting the DC Adapter B (Right Side)
9

WaveSurfer Accessory
3. Tighten the right and left screw knobs by hand while pressing
them in to fasten the DC adapter to the oscilloscope. (See Figure
6 below.)
NOTE Tighten the right and left screw knobs evenly.
Screw knobs
Figure 6 Fastening the DC Adapter
(b) Connecting the DC Power Cord to the
Oscilloscope
After mounting the DC adapter on the rear of the WaveSurfer
oscilloscope, connect the DC power cord following the steps below.
1. Connect the DC power cord of the DC adapter to the DC IN at
the upper right corner of the rear of the oscilloscope. (See Figure
7 below.)
NOTE Make sure to connect the cord to the DC IN correctly
and to connect the plus and minus terminal in the
correct direction .
Connector of the
DC power cord
DC IN position of the
oscilloscope
−
+
Figure 7 Connecting the DC Power Cord
10

EXTERNAL DC ADAPTER User’s Manual
(c) Connecting the WS-DCADAP Cable
The WS-DCADAP cable is used to input the voltage supplied from
the battery to the DC adapter.
1. Check the lug positions of the DC adapter IN jack and the
WS-DCADAP cable plug. (See Figures 8a and 8b below.)
NOTE When fitting the connecter, align the lug positions.
IN jack
(on the DC adapter side)
Lug
Figure 8a Checking the Lug Position (on the DC Adapter Side)
Lug alignment position
Plug of WS-DCADAP cable
Figure 8b Checking the Lug Position (on the Input Cable Side)
11

WaveSurfer Accessory
2. Press the WS-DCADAP cable plug into the IN jack while
aligning the lug positions. (See Figure 9 below.)
Figure 9 Fit of the IN Section
3. Tighten the setscrew of the WS-DCADAP cable plug around the
jack screw of the DC adapter to fasten the connector. (See
Figures 10a and 10b below.)
Setscrew
(plug of WS-DCADAP cable)
Rotate in the direction indicated by
the arrow to tighten the setscrew.
Figure 10a
Fastening the Input Connector Figure 10b
Connection of Input Section
(Completed)
12

EXTERNAL DC ADAPTER User’s Manual
(d) Connecting the WS-DCADAP Cable to the Battery
NOTE 1 Make connections with the following combination:
•Red alligator clip: Positive terminal of the battery
•Black alligator clip: Negative terminal of the battery
NOTE 2 Before making connections, make sure to turn off the
POWER switch of the DC adapter.
Battery
(or other DC power unit)
+ −
(Red alligator clip: +terminal)
(Black alligator clip:
−
terminal)
(DCadapter side)
Figure 11 Connecting the WS-DCADAP Cable to the Battery
13

WaveSurfer Accessory
(e) Starting Up the Oscilloscope
After making necessary connections, start up the oscilloscope
following the steps below.
1. Set the input voltage to the DC adapter.
NOTE 1 Use a battery with the rated output voltage of 12 Vdc or
24 Vdc.
NOTE 2 Set the output voltage of the DC power unit in the
range between 12 Vdc and 28 Vdc.
2. Connect to the battery or turn on the output switch of the DC
power unit.
NOTE 3 The standby time until a voltage of 23.5 V is output
after the DC power has been supplied is approximately
5 sec.
3. Turn on the POWER switch of the DC adapter. (See Figure 12
below.)
Black
Green
POWER switch
Figure 12 POWER Switch
Now the oscilloscope can operate with the voltage supplied from
the battery (or other DC power unit) and the DC adapter.
NOTE 4 If a commercial AC power is supplied through the AC
power cord connected to the rear of the oscilloscope,
the oscilloscope operates giving a higher priority to the
AC power supply.
When both the AC power and DC power are connected,
the AC power is used as drive power. However, if the
AC power is interrupted, the power is automatically
switched to the DC power. Additionally, if the AC
power is connected while the DC power is being used,
14

EXTERNAL DC ADAPTER User’s Manual
the power is automatically switched to the AC power.
In such cases, a switching time of approximately 1 sec
is required to switch the power inside the oscilloscope.
If the AC power is connected while the DC power is
being used and the DC power is turned OFF (or the
cable is disconnected) at the same time, the power
supply is interrupted during switching time and the
oscilloscope operation is completed abnormally,
causing the oscilloscope to be faulty or data to be
corrupted.
4. Turn on the ON/STANDBY switch provided at the lower left on
the front panel of the WaveSurfer oscilloscope.
The oscilloscope will start operating.
NOTE 5 When the DC adapter is used together with a
vehicle-installedbattery, do not start the engine while
theWaveSurferisoperating.
Failure to observe this may result in a breakdown in the
WaveSurfer or corruption of data.
When the engine is started (while a cell motor is used),
the power to the WaveSurfer may be shut down due to a
temporary drop of the battery voltage.
NOTE 6 When the DC adapter is used together with a
vehicle-installed battery, be careful with the charge
statusofthebattery.
If you keep the WaveSurfer in operation for a long time
while the vehicle engine is stopped, the battery power
will be consumed and you may not start the engine or
thebatterymaydeteriorate.
15

WaveSurfer Accessory
(f) Turning Off the Oscilloscope
Follow the instructions in the WaveSurfer Operator’s Manual to turn
off the oscilloscope
(g) Turning Off the DC Adapter and the Battery
After the power supply of the oscilloscope has entered the standby
state, perform the terminating operation as shown below.
1. Turn off the POWER switch of the DC adapter.
2. Disconnect the cable from the battery or turn off the output
switch of the DC power unit.
NOTE7 While the oscilloscope is in STANDBY or the POWER
switch of the DC adapter is off, power consumption in
the STANDBY state is at a minimal, but non-zero,
level.
16