Newport Corporation warrants this product to be free from defects in material and workmanship for a period of 1 year from the date of shipment.
found to be defective during the warranty period, the product will either be
repaired or replaced at Newport's option.
To exercise this warranty, write or call your local Newport representative, or
contact Newport headquarters in Irvine, California. You will be given prompt
assistance and return instructions. Send the instrument, transportation
prepaid, to the indicated service facility. Repairs will be made and the instrument returned, transportation prepaid. Repaired products are warranted for
the balance of the original warranty period, or at least 90 days.
If
Limitation of
This warranty does not apply to defects resulting from modification or misuse
of any product or part. This warranty also does not apply to fuses, batteries,
or damage from battery leakage.
This warranty is in lieu of all other warranties, expressed or implied, including
any implied warranty of merchantability or fitness for a particular use.
Newport Corporation shall not be liable for any indirect, special, or consequential damages.
Warranty
Statement of Calibration
This instrument has been inspected and tested in accordance with specifications published by Newport Corporation.
The accuracy and calibration of this instrument and photodetector (where
applicable) is traceable to the National Institute for Standards and Technology through equipment which is calibrated at planned intervals by comparison to the certified standards maintained at Newport Corporation.
Model 2832-C Controller and Accessories
Model 2832-C VFD Display
Description of Model 2832-C Display Regions
Front Panel Key Pad
Decimal Point Indication of Menu Hierarchy Position
Rear Panel Power Supply Voltage Switches in Positions
Connecting a Detector with its Calibration Module
Model 2832-C Detector Calibration Module Input Port
Model 2832-C Analog Signal Flow Diagram
Model 2832-C Digitized Signal Flow Block Diagram
RS-232 Cable Connections
ment with a wealth of measurement and triggering features designed to
provide measurement sensitivity, flexibility and speed. In spite of its power,
is
Model 28324
access to basic features and a shallow menu for access to advanced features.
Great flexibility exists within the command structure of the Model 28324 so
that even complex measurements can be set up quickly and easily. The
28324 can react to or provide triggering or data log up to
per channel!
The Model 28324
family tree of the 28324 compatible detectors and accessories
1
Figure
below.
also designed to provide simple operation with direct panel
is
compatible with Newport's Low-Power detector family.
The Model 28324 connects to detectors through a calibration module con-
taining information unique to the detector being used. Calibration modules
are ordered with a detector at the time of purchase and are labeled with the
detector's model number and serial number. Detectors with calibration
modules have a "/CM appended to their model number.
EXAMPLE: 818SL (no calib. module) 818SL/CM (with calibration module)
Scope of
Thii
Manual
Please carefully read this instruction manual before using the Model 28324
Be
DualChannel Power Meter.
cautions throughout this manual.
contact Newport Corporation. This instruction manual contains the necessary
information for operation and maintenance of the Newport Model 28324
Channel Power Meter
if
service
Section 1
Section 2 System Operation
Section
Section
Section
Section
Section
Appendix A Syntax and Definitions
Appendix
Appendix
necessary. This information
3
4
5
6
7
B
C
as
especially careful to observe the warnings and
If
any operating instructions are not clear.
well
as
information for troubleshooting and obtaining
is
divided into the following sections:
General Information and Functional Description
Principles of Operation
Computer Interfacing
Remote Command Reference
Maintenance, Test, and Troubleshooting
Factory Service
Error Messages
Status Reporting System
Dual-
Unpacking
and
Inspection
Appendix
All Model 28324 Dualchannel Power Meters are carefully assembled, tested
and inspected before shipment. Upon receiving this instrument, check for any
obvious signs of physical damage that might have occurred during shipment.
Report any such damage to the shipping agent immediately. Retain the
original packing materials in case reshipment becomes necessary.
The Model 2832-C
learning curve. This section starts by giving a brief listing of display, key pad
and menu command features. Much of the Model
obvious after these descriptions. The manual then explains each key operation and menu command in detail. Reference each of these detailed explanations as required when getting started.
The Model
be clearly observed with most laser goggles and at high angles of incidence.
Figure 2 illustrates and identifies the primary regions and annunciators within
the Model 2832-C's display.
28324 incorporates
n n
'a.
I
MODE:%
is
designed to provide quick operation and to avoid a steep
Secondary Channel, Bar Graph, Menu and Message Display Area
Figure 2b - Description of Model 2832C Display Regions
4
I
I
VFD
=
I
Units Display
I
Display
CHA
CHB
+
I
Display Channel
Annunciators
Signal Filtering
Armunciators
Table
1
-
Model
Z83ZC
Annunciator Comment
Display Annunciaton
CH A
CH B
DC
SNGL
CONT
ANLG
DIG
SHIFT
MENU
The display
primary display area.
The display is showing Channel B information in
primary display area.
Blinking indicates that the meter is making
measurements.
Meter is set to make
Meter will make only one measurement per front
panel or external trigger.
Meter will continuously make measurements until
stopped.
Analog signal filtering is on.
Digital signal filtering
Indicates that the next key press will execute a blue
key function.
Meter and display are in menu mode. Measurement
is
stopped.
is
showing Channel A information in
DC
signal measurements.
is
on.
STORE
USRCAL
EXT
AUTO
ZERO
A'ITN
Operating controls for the Model
panels of the Model
are
controls
Section
quick access to measurement functions and menu access to advanced features and setup parameters. Most of the keys on the front panel only affect
the channel indicated by the display channel annunciators. Table
Sections
Menu
used. Rear panel controls are used for AC line power setup,
2.5.
The front panel key pad
2.3.1
level key
28324.
through
functions are discussed in Section
2.3.21
is
Meter
data logging.
User (versus calibration module) has supplied the
detector responsivity in use.
External trigger input is enabled.
Automatic signal gain ranging is on.
Background signal subtraction (zeroing) is on.
The responsivity in use includes the affect of the
Displays and edits the calibration
wavelength in use.
Displays signal gain range in use.
Adjusts gain range or parameter
values or moves through a list.
Toggles the signal acquisition of
both channels.
Cycles meter between allowed
measurement modes.
Cycles display measurement units
between those allowed.
Displays statistics.: Max, Min,
Max-Min, Mean and Std.
Starts and stops channel A signal
acquisition.
Dev.
R/S
B
RUN-B,
RUN-B?
Starts and stops channel
acquisition.
B
signal
EXT EXT
MENU None Enter or exit
ENTER None
ESC None
4,
None
Note: n in a remote command stands forA (channel A) or B (channel B).
Enable or disable external triggering.
MENU
command mode.
Select next lower menu level or enter
edit mode.
Escape to next higher menu level or
escape edit mode.
Zooms
bargraph in or out. When in
Edit mode, selects the digit to be
edited by the
V,
A
keys.
2.3.1 &A, Power
The
AA
key toggles the Model
the
&A
key in until it clicks and stays in its depressed position. To turn the
meter
off,
press the key again until it clicks and rebounds to its original length.
If
the meter
LOCAL key and puts the meter into the local mode. The remote mode is desig-
nated on the front panel by displaying an asterisk
the secondary channel display area.
is
in the remote mode, depressing this key the first time serves
2832€
on and
If
the meter
off.
To turn the meter on, depress
#f
at the right-hand side
is
in the local-lockout mode,
as
of
a
is
displayed on the front panel.
-
If
the meter
When SHIFT
functions (such as STOREF) are enabled. The next key press will cause that
blue function to be executed and the "shift status" to disable.
2.3.3 DISP:+., Display
This key cycles the display and the backlit key pad through: OFF, LOW, NORM
and HIGH brightness levels. This allows a user to operate in a dark environ-
ment without light pollution from the display, (except for one dim scanning
decimal point and the measurement activity annunciator). When the display is
OFF, the R/S, R/S A, or R/S
ments. Any other key press returns the display to the LOW brightness state
while ignoring the key function.
2.3.4
Press this key to cycle input signal filtering between: OFF, ANLG, DIG,
ANLG+DIG. This function provides methods of lowering the noise observed in
the measurement data and the analog output. When the ANLG annunciator is
lit, a 5Hz low pass filter lowers the noise floor by attenuating high frequency
signal components.
is
not in the remote mode, pressing this key serves as a SHIFT.
is
pressed, the SHIFT display annunciator lights and the blue key
10-sample averaging buffer before being further processed, stored or commu-
nicated to the display or computer interfaces. With DIG on, all observable
values represent digitally averaged results relative to the original
sions. This averaging is independent of the subsequent processing available
through the STATS buffer, Section
is
lit, measurements pass through a moving
A/D
conver-
2.3.15.
2.3.5 ZERO, Offset Subtraction
This key turns offset subtraction on and off. When turned on, the ZERO
annunciator lights and the last signal reading
from all subsequent signal readings S. This causes subsequent signal calcula-
tions (and the display) to use the value
Offset subtraction allows one to remove the effects of ambient DC signals, by
zeroing the display before making a measurement. Pressing the ZERO key a
second time turns off the ZERO annunciator and stops offset subtraction.
is
saved
as
SS, instead of S.
S, and subtracted
2.3.6 AUTO, Automatic Gain
The AUTO key toggles automatic signal ranging on and off. When on, the
AUTO annunciator lights and the signal range (amplifier gain) is adjusted to
utilize maximum analog-to-digital converter resolution. When AUTO
off, the AUTO annunciator
current state.
Signal range can be manually controlled by the
V
,
A
arrow key when AUTO
AUTO off and executes the manual range change. See RANGE, Section 2.3.1
Signal range changes will often not coincide with observable changes to the
as
display value
adjust independently. Signal range gains will occur in
or manual ranging.
AUTO gain ranging
a SNGL measurement MODE, AUTO will turn back on if it was on when the
SNGL measurement mode was entered. (See MODE, Section 2.3.13)
2.3.7
The 2832-C has a primary channel and secondary channel display area. The
primary channel
channel displayed underneath it in slightly smaller characters.
Depressing the CH A key causes channel A to be the primary display channel.
The CH
display channel annunciators will indicate which channel
primary display channel. When a display channel is selected, the front panel
will change to reflect its settings and measurement data. Operations from the
keypad or menu that affect a specific channel will only affect the currently
displayed primary channel and not the other.
CH A
B
the display
is
0,
Display Channel A (or
is
displayed in larger, bold characters, with the secondary
key causes channel B to be the primary display channel. The
is
is
not allowed in SNGL measurement modes. When exiting
Ranging
is
turned
turned off and the signal range
V , A
arrow keys. Pressing an
is
on (and STATS, MENU and hare off), turns
scaled by the detector responsivity and so must
1
is
left in its
decade steps when auto
B)
is
currently the
1.
2.3.8
ST0
REF
use in relative measurement calculations. When units are relative,
the stored reference
units are logarithmic relative, dB, and the stored reference is selected the
displayed value
stored in the units of Watts. Press ST0 REF to cause a new D, to overwrite the
existing
D,
is
value.
the function
10
log (DID,). D,
is
always a power reading
NOTE
When not using remote interface operation and when displaying relative dB
or REL measurements with the stored reference selected, the message
display area will show the ST0 REF value used in the calculation.
2.3.9
The REF SEL key
relative, REL, and logarithmic relative, dB, unit readings. Press the REF SEL
key to display the reference source in the message display area. The EDIT
annunciator will be lit and the current selection will blink. Press
select a new reference source. The choices will be:
ST0 REF
USR REF
Device Dependent Commands)
CH A@) -The other channel
Press ENTER to accept the new reference source and exit the select reference
mode. Press REF SEL or ESC to exit without changing the reference source.
REF
SEL,
Select Reference
is
used to select the reference value, Dref, to be used for
-
The last stored measurement
-
User defined reference
(see
V, A to
the USRREF command in Section
5.3
NOTE
The CH A(B) source
other channel
will not be able to select it.
2.3.10
A detector calibration module contains responsivity data for its assigned
detector at discrete wavelengths. By telling the meter which wavelength is
being measured, the correct responsivity value
measured power or energy. When
points, linear interpolation
A,
Wavelength
is
only applicable
is
not available then N/A will appear next to CH A@) and you
is
used to approximate the true responsivity value.
if
the other channel
a
wavelength
is
available.
is
used in calculating the
falls
between two calibration
If
the
Press the
display area. Press ENTER to light the EDIT annunciator and cause the last
digit of the wavelength to blink. Press
down and
to accept the new wavelength and exit the wavelength edit/display mode.
Press
2.3.1 1 RANGE,
RANGE key allows the user to view the amplifier signal range. Signal ranges
step in
the meter's analog-to-digital converters. The available signal ranges are
detector dependent. Press RANGE to display the signal range number in the
message display
the detector signal varies more than a decade in magnitude. Signal range changes
can occur without an effect on the displayed measurement value. Press RANGE a
key to display the measurement wavelength in the message
V, A to adjust the blinking digit up or
4,)
to change which digit blinks. Press the ENTER a second time
h
or ESC to exit without changing the wavelength.
Signal
1
decade gain increments in order to utilize maximum resolution from
area.
time to exit the signal range display mode.
If
AUTO
Range
is
on, then the signal range number will change
if
Press the
is on, pressing the
range to change. Manual ranging
recording equipment.
V , A
arrow keys to increase or decrease the signal range.
V,
A
arrow keys will disable AUTO and cause the signal
If
AUTO
is
useful when working with external analog
NOTE
Pressing the
range even when the signal range is not being displayed via the RANGE key.
The
RJS
channels simultaneously.
R/S
key press causes one reading to
R/S
key press toggles continuous data acquisition on and off.
The activity annunciator (Figure 2b) flashes to indicate that readings are being
taken on the displayed channel as indicated in the upper right hand corner of
the display. The indicator is off when data acquisition on the displayed
channel has been stopped. In the special case that both channels are started
together in DC CONT mode the readings will be synchronized together with
channel A readings leading channel B readings by about 70
channels run independent of each other.
V , A
arrow keys will disable AUTO ranging and change the signal
runstop key provides front panel control over data acquisition for
If
the channel
is
in SNGL measurement mode, each
be
taken.
In
CONT measurement mode, each
psec. Otherwise the
both
2.3.13 MODE, Measurement Mode
The Model 28324 acquires data in either continuous or in a single-step mode.
Press the MODE key until the desired mode is indicated in the mode annuncia-
tor area of the display. Table
on the 2832-C.
3
gives a description of the two modes available
Table 3 - Model 2832C Measurement Modes
Mode Description
DC CONT Measurement occurs at a programmable sample rate,
Section 2.4.7.
DC SNGL
2.3.14
Measurements can be displayed in various units. The set of available units is
described in Table 4. Press the UNITS key to cycle the display through the set
of available units.
UNlTS,
Table
4
-
Valid Display Units Available to Low Power Detectors by MODE.
MODE A W W/cm2 dBm dB
DCSNGL
A measurement is taken every time the meter receives a
trigger up to a 500Hz rate when two detector calibration
denotes the default units for the detector in the given measurement mode.
5
Some display units are abbreviated. Table
measurement units. Display units are limited to four characters in order to
provide for display engineering prefixes such as: p, n,
micro, milli and kilo respectively).
Table
5
-
Displayed Unit Abbreviations Versus Actual Measurement Units.
Actual Units A W W/cm2 dBm dB REL
Displayed Units A W W/cm dBm dB L+dd
lists displayed units versus actual
p,
m and k (pico, nano,
2.3.15 STATS, Moving Statistics
The STATS key causes a list of statistical results from the stats buffer of the
display channel to be displayed in the message display area. The stats buffer
is
a moving data window containing the most recent measurements to a depth
1 I N I 100.
data acquisition or storage and results are continuously updated.
Press the STATS key to enter the stats display list. The first statistic displayed
will be the stats buffer depth
the list. The following statistics are available:
and STD DEV.
When the STATS buffer depth, N, is displayed, it can be adjusted by pressing
ENTER and using the
key to adopt the new value for N and escape the edit mode. The STATS buffer
is
cleared whenever a new stats buffer depth N, or MODE or UNITS is estab
lished. Press the STATS key a second time to exit the stats display mode.
The default value
V,
A
keys to set a new value for N. Press the
is
N
N.
Press the
=
10.
Display occurs without disrupting
V
,
A
adjust keys to move through
N,
MAX, MIN, MAX-MIN, MEAN
ENTER
2.3.16 R/S
The R/S A and R/S B run-stop keys provides front panel control over data
acquisition for each individual channel. When in SNGL measurement mode,
each R/S A@) key press causes one reading to be taken on the respective
channel. In CONT measurement mode, each R/S A@) key press toggles
continuous data acquisition on and off on the respective channel.
The activity annunciator (Figure 2b) flashes to indicate that readings are being
taken on the display channel as indicated in the upper righthand corner of the
display. The indicator
has been stopped.
2.3.17
EXT enables and disables the triggering of data acquisition through the rear
panel trigger input BNC connector. The meter can be configured to be
triggered by either a rising or falling edge
Press EXT to light the
both channels. The Model 2832€ will still respond to triggers from the R/S,
A, or R/S B keys even when the EXT trigger
second time to turn off the annunciator and disable the external trigger input.
A@),
RunStop Channel A (or
EXT,
External Trigger
B)
is
off when data acquisition on the displayed channel
TTL signal. See Section 2.4.9.
EXT
annunciator and enable the external trigger input to
The MENU key provides access to advanced features and parameters. Press
the MENU key to stop all data acquisition, light the MENU annunciator, and
display the first item of the top level menu list. Press the MENU key a second
time to immediately exit the menu. Menu structure and functions are pre-
sented in Section
values. Most parameter values can be edited to configure the meter. Lists are
moved through via the
ENTER key. To escape a lower level list, press the ESC key.
In the menu, all key functions are ignored except for the MENU, ENTER, ESC
and the
Pressing SHIm will toggle the SHIm annunciator, but it will not effect anything
else
To edit a displayed parameter press ENTER. This enables the edit mode and
causes the parameter (or a digit) to blink. Press the
parameter through its allowed list or to count the blinking digit up and down.
When adjusting a numerical value, the
which decimal digit blinks. Press ENTER to adopt the new value and escape
the editing mode. Press ESC to leave the editing mode without adopting the
new value.
MENU
2.4.
The menu consists of a series of lists and parameter
V, A keys. To move to a lower level list, press the
V, A keys. Each key will act without having to initially press SHIFT.
when in MENU mode.
V, A keys to adjust the
4
,
b
keys can be used to change
2.3.19
ENTER allows one to move lower into the menu when in menu mode, to enter
editing mode when an editable parameter
new parameter value after it has been edited. Editable parameters can be
found both in and out of the menu mode.
editable parameter is being displayed, the key press
2.3.20
ESC
escape editing mode when editing a parameter value without adopting any
changes to the parameter. At the top level of the menu, pressing the
exits the menu mode. The
display modes such
range display modes. When there
ignored.
2.3.21
The
In normal operation, the
signal gain. In any other mode, the
or to adjust a blinking digit. The4
and in edit mode, select which digit of a numerical value will blink.
ENTER
is
being displayed and to adopt a
If
ENTER
ESC,
Escape
allows one to escape to the next higher level when in menu mode and to
ESC
key also allows one to escape various other
as
STATS or wavelength display or amplifier signal gain
is
nothing to escape from, the
V , A
,4
,
b
Adjust
V
,
A
,4
,
b
keys allow one to adjust various parameter states and values.
Menu functions provide control over parameter values and methods
making measurements. The menu consists
6
eter values. Table
menu functions and parameters. Most settings displayed in the menu and
changes to those settings affect the channel indicated by the display
channel annunciator.
2.4.1
To access the menu press MENU. The MENU annunciator will light and data
acquisition will stop. Menu labels and parameter values are displayed in the
message display area. The first, second and third
within this
level of the menu hierarchy, Figure
and their hierarchy.
Menu
area
presents a quick summary
Access
indicate a current position at the top, second, third or fourth
and
Movement
Top Level
Second Level
4.
Table 6 presents the menu functions
0
of
0
a number
of
leftmost decimal points
of
lists and param-
the hierarchy
0
of
of
the
. .
Third Level
1.1. 1.
Fourth Level
Figure
4
-
Decimal Point Indication
In the menu, valid keys
move through the menu or edit a parameter value. In the menu, it is not
necessary to hit the SHIn key to invoke the action
ESC
or
ENTER,
but with no effect on subsequent pressings of other keys. Once in the menu,
the rules for moving through the menu are
i. Press ENTER to move to the next level down or to enter the edit mode if a
editable parameter is being displayed and to accept a parameter value in
its currently displayed state and exit edit mode.
ii. Press
top level or to exit edit mode without changing the parameter value being
edited.
iii. Press MENU to immediately escape the menu regardless
within the menu.
iv. Use the
level. Also use these keys to adjust a parameter or decimal value when in
edit mode.
V , A, 4 ,
ESC
to move to the next level up or to escape the menu when at the
V,
A
are
limited to those needed to perform operations to
b
.
The SHIn key will toggle the SHIn annunciator,
keys to move up or down through a menu list on a given
channel for a total
an internal buffer for subsequent viewing or transmission over a computer
interface. A separate buffer is maintained and configured for each channel.
Data is maintained on power down, but lost when
loaded, Section 2.4.3, or when the buffer is cleared via the CLR DATA BUFFER
command or when data with new units is being stored.
The data store buffer operates in two ways: SLIDE
tion, the buffer slides along storing the most recent measurements up to the
of
size
pushed out and lost. In
buffer is full. After this, data acquisition stops and no additional data can
stored without first clearing the buffer via the CLR DATA BUFFER command.
DATA BUFFER CLR is displayed when the buffer is empty.
The size
value
before dropping old data or stopping data storage.
Data storing
STORE annunciator.
When in CONT mode, data acquisition and storage is resumed immediately
the buffer. Beyond this,
of
the buffer is set by the D-BUF-SIZE
dddd
to establish the number
is
enabled by the user via the DATA STORE menu function. Edit
ON,
the
upon exiting the menus if acquisition is active
acquisition
data acquisition and storage requires an initiating R/S key press, external
trigger or a remote RUN command upon exiting the menu.
OEFcondition to enable or disable data storing and the associated
is
not active when the menu is entered, or when in SNGL mode,
measurements. These measurements are stored in
as
data enters the buffer, the oldest data is
FIX
configuration, data storing continues until the data
of
1000
measurements for each
a
new configuration is
or
FIX.
In SLIDE configura-
dddd
menu function. Edit the
data points that the buffer will hold
as
the menu is entered. When
be
can
be
of
dddd.
viewed
is
Buffer data
in the measurement
buffer:
dddd
dddd = 0001
value
via
the
VIEW
area
while the message
Use the
the first,
V , A
i.e.
the oldest datum.
DATA menu command. Data are displayed
area
displays the position within
keys to move through the buffer data. The
the
NOTE
When DATA STORE is off, CONT acquisition mode behavior defaults to the
condition where data acquisition is begun without the requirement