T_J16 T J16

User Manual: T_J16

Open the PDF directly: View PDF PDF.
Page Count: 3

DownloadT_J16 T J16
Open PDF In BrowserView PDF
J16

R

o
E

[FEATURES
C1gifl LED 137cadolrf
Eight Silica[ SerrscrPrzbvs
tluicl;ly Interchange ¬4'ittrsot
Recr;libraiion
Accurate Spectrsl End Cosrr;e
cot'rr cliaus
11~vtrlc and US Vers"Ons
Available

AC or Internal Pechsrge ble
Eaftery Versions
Auplicafiun Moles Available

BENEFITs

P

Easy to Pead in DNrk Areas
Rugged but Accurate
1!rfspi-ble to Vany Light
h{easurement Meeds

Use Anywhere

J16 with optional probe.

J6523

J6501
J6502-A
J6503

J16 PHCTOMETEC/RACICMETER

The Tektronix J16 is a portable digital photometer/
radiometer capable of making a wide variety of fight
measurements-in the laboratory, in the field, or on the
production 11oor. A J16 System consists of a J16
mainframe, and one of eight detachable probes which
can be either mounted on the J16 or on the end of an
extension cable. All probes have a Hold switch which
allows thedisplayed reading to be held .
Eight quickly interchangeable probes are available for
measuring illuminance, irradiance, luminance, lightemitting diode output, and relative intensity. Recalibration is not necessary when probes are interchanged .
Connection of a probe to the J16 automatically selects
the correct front panel units indicator. The 3 112 digit
LED display can be easily read under low ambient
conditions.
All probes use silicon photodiodes individually
corrected with multi-element glass fillers for maximum
stability and accuracy .
The optional BCD/analog output feature
(Option 07) allows the user either a BCD
output o1 the displayed reading or an analog
signal (level) proportional to the light falling
upon the sensor . The J16 can be also used
with Tek MI 5010/50M30 system for interface
with a GPIB system
Under normal usage, the internat
rechargeable nickel cadmium batteries will
operate the J16 for four hours. An ac power
supply is recommended far continuous
operation,
Power supplies or battery packs can be
changed quickly by removing four screws on
the J1 6's rear panel The cabinet and probes
have an internal threaded socket (1/4" x 20")
for convenient mounting on a tripod or optical
bench.

J16-TV PACKAGE

J6504
J6505

The J16-TV package is an excellent
transfer mechanism which provides a simple,
accurate method for adjustment of monitor
screen color temperature . The primary colors
are measured and adi,usted to produce white
color temperature balance.
The J16-TV with optional J6503 or J6523
measures monitor screen brightness on both
color and black and while monitors . Other
applications include measurement of studio
lighting, camera lighting, and illuminalion of
work areas.
The 16-TV package includes : J16 BatteryOperated Photometer, J6502-A Irradiance
Probe, light occluder, probe extension cable,
and battery charger See Application Note
58A-2926-1 for additional information.

J6511 (shown)

J6512A

LED Adapter with extra LED Holders (included
with J6505) 014-0047-00

CHARACTERISTICS
J16 MAINFRAME
Display-3112 digit LED readout and three LEDs
automatically indicating correct units for probe in use.
Metric version readout is also available (Option 02).
Stability - :5 2% per year .

Linearity-<_ 2% over entire range (enables single
point calibration),
Integration Time - ^ 100 ms .

Calibration -Electrical calibration of the Jib
mainframe is performed wile a calibrated voltage source
or DVM traceable 1o NBS . Calibrated probes can be used
with any J16 without additional calibration.
POWER REQUIREMENTS
Standard and Opt . 01--Has internal rechargeable
NiCad batteries that require 16 hours for a lutt charge .
The J16 will operate nominally four hours continuously
on a charge . For continuous-operation an ac power
supply is recommended .
Opt. 03 and Opt. 04-AC only operation, no internal
batteries .

J16 used to mensure pulsed light source. Refer
fo Application Note 58A-27(12-1 .
To mdf:r, call yo-.'[ local TtHronlx Sales 0tlice . of call TA's #dation::1 t1,,ukatinq Center .
Toll free : 16 :0-426-22110 . Ext . 99 .

DIGITAL PHOTOMETER/RADIOMETER

Luminance
Uncorrected
Red LED
Grean/Yellow LED
illuminance
Ifradlance
16503
16523
15804
~J6505
16501
16511
16502-AIJ6512-A"
0.1 to 19,990
Relative
0,001 to 1999
0.001 to 1999
iJS'a
0.00i to 1999
0.1 to 199,900
0 .001 to 1999
response only
footcandles"
footcandles!'
lootcandles't
microwatts/cW"'
footlamberts"
footlamberts"
. a
Relative
0 .01 to 19,990 .-:0.01 to 19,990
> 0.01 to 19,990
1 to 1,999,000 .
1 to .199,900
Metric
0 .01 to 19,990 : , `
lumnens/m' tux ''
luumens/m2 (tux)°'I
milliwattslmg"'
candelas/m! (nits)* '
eandelas/mz nits'"
response only
0 t. 02 lumnens)mY !ux "`
Within 5% of NBS standard and t 1 digit in
Probe-to-probe
Same as 16501,
Within 5% of NBS
Within 5°! of NBS
Same as 16511,
Accuracy
last place . Calibrated with a 3100°k
accuracy t 5°/°
except calibrated with
standards and ± 1
except calibrated
(induding J16) standards and t1
light
source
with
tungsten
a
656
nm
filter
digit in last place .
digit in last place .
with a 762 nm filter
tungsten
light source
Calibrated with a
Calibrated with a
3100° tungsten
3100° tungsten
light source .
light source.
CIE photopic curve
flat within t 7% `z
CIE Photopic curve
UV enhanced silicon.
CIE photopic curve.
p®Clral
CIE photoplc cur'
' from 600 to 950 rim
spectral curve
from 600 to 710 nm
tiespohse
250 to 1200 nm
450-600 i 8°/°
f
50% sensitivity
8°
1~
50% sensitiviy at 48'- off axis
Acceptance
Cosine
50% sensitivity
at 48° off axis
at 48° off axis
Angle
corrected (18D°)
Within 2%1 peryear
tab.114
a eatibilli '
Linearity
Within 2% over entire range enabling single point calibration
*' An additional decade ofsensitivity is included and is usable if the J16 is carefully zeroed and used at a relatively stable temperature.
0.000001 to 199.9 candelas when used with 014-0047-00 LED adapter or at 3 .8 inches source-to sensorspacing. Luminous intensity readings of higher
intensity light sources may be easily made at correspondingly greater distances using the fomula : Foofcandles x dz - candelas where d is the distance from
the source to the sensor in feet. (For metric readings, use luxx s = candelas where d is distance from the source to the sensor in meters.) RequestJl6
Application Note 58A-2704-1 forfurther information.
A 1lcatlon

Probe

e

Metric to U5
'~ US/Metric Conversions us to Metric
Illuminance
fc x 10.164 =tux tux x D .0929 = fc
Luminance
fl x 3.426 = nits nits x 0 .2919 = il
NOTE : CIE stands for International Commission on illumination
. 3 Measurements in the 450 to 950 nm range
can now be made to within a ±1% uncertainty
traceable to NIST, formerly NBS. Using the
new standard the 16502 and 16712 were no
longer flat across the range, see the Spectral
Characteristics Chart. 77re 'A' version of those
probes were developed to provide a flat
response when measured with the new
standard.
For those who need new probes that match the
characteristics of the on inal J6502/J6512
probes, orderJ6502Aor%512A with Option 70.
IT IS NOT POSSIBLE TO UPGRADE AN
ORIGINAL 6502 OR16512 TO ANA
'°
MODEL BECAUSE THEY USE A DIFFERENT
DETECTOR AND GLASS.

TYPICAL PROBE SPECTRAL CHARACTERISTICS
___°_________
80

t79b

CC+
a.0 60
>.
? >
m 'N 40
a, r20
0

NOTES :

CIE Photoplc
Curve
~  ri

y

~'

a65oaA
J6512A~

C
vn

J

5d2Af
J6512a

l i ce.

Opt . t o` -'
/

{

j"

o

c

16504
165 5

1

f

16523
16501

\

J651t

m

e

a

I~

---\ :.

J6503

/

'mm

____

-

Cb
's m

1,50 600 650 700 750 800 650 900 950 1000 ,050 1100
Wavelength-Nanometers
(All curve heights adjusted to 100a/o for clarity)

350 400 450 500

C iE stands far the International Commission On Illumination .
Dashed lines around a curve indkare the approximate range or the Cunle.

APPLICATION NOTES
t Tltld `'
Photometry/Radiometry primer, and standardizing CRT measurements
'Luminous Intensity and visible LED measurements w/Tektronix 116 Photometer
Measuring pulsed light sources with the 116 and an oscilloscope
Radiant intensity and intrared'emitfng diode. measurements
Television station applications for the J16 Photometer
,. Practical lighting measurements with the Tektronix 116 :;` ,
TV picture monitor color temperature adjustment using the Tektronix 116
. Photographic exposure measurements with the Tektronix 116
Measuring the luminance of small areas of light with the J16 a nd 16523
Optical communications measurements

Uteratuire . #
60-W-5750
58-A-2635
58-A-2702-1
58-A-2704- 1 .,
58-AX-2764-1
58-A-2912
58-A-2926-1
58-AX-3060-1
58-AX-3252
58-AX-3602 .

To order, call your local Tektronix Sales Office, of call Tek's National Marketing Center .
Toll free : 1-B00-426-2200, Ext. 99,

PHYSICAL CHARACTERISTICS
(With Probe and Battery Pacii Installed)
Dimensions
mm in.
121--L6
Width
Height
60 2.4
203 8 .0
Depth
Ib
Welghi.=
ku
1 .5
3.3
Net
Domestic Shipping
2 .3
5 .0
10.0
Expori-packed
_ 4 .5

J16

DIGNAL

J6511

Illuminance Probe

Highway Illumination
Lurnlrafies anti Lamps
h}'arksiaticn Illumination
Studio Lighting
Office Lighting
F Lighting Equipment
E
r

J6502-A/J6512-A
Irradiance Probes

Laser Research
Display Color Balancing
Radiant Efficiency
Infrared LED Testing

Q

J6503

8° Luminance Probe

TV and Computer Display
Screens
" Work Surface Illumination
f Signal Illumination
E Projection Screens
4

J6523

1° Luminance Probe

Roadway Lighting
" TV and Computer Display
Screens
" Photographic Equipment
Testing
e Glare and Contrast
Measurement
A

J6505

Red LEO Probe
" Output of Red LEDs
(600-710 nmJ

J6501

Illuminance Probe
t

For Yellow and Green LEDs

J6511 ILLUCirIINIANCE PROBE

The J6511 is an illuminance probe with readout in
footcandles [lumens/ml (tux) for the J6511 Option 02]. A
multi-element glass filter and silicon photo-diode ensure
a close match 1o the CIE photopic curve (color corrected) .
The silicon-sensor recovery time is virtually instantaneous; low-light levels can be measured immediately
after exposure to bright sunlight .
The angular response is accurately cosine corrected,
simulating an ideal 180° field-of-view defector . The lowprofile probe has a leveling indicator to ensure accurate
measurements where a significant proportion of the
illumination comes from sources at low angles to the
horizon .
A 25-foot cable between the probe (J6511) and J16
allows the user 1o be out of the field of view while making
measurements .

J6562-A/J6512-A IRRADIAI4CE
PROBE

The J6502-A/J6512-A measure irradiance in microwatts/cm2 (milliwatis/m2) with Option 02). The spectral
response is flat from 450 to 950 nanometers . The
response is typically down 50% at 400 and 1030 nm .
An optional filter holder is available for the J6502-A to
mount standard 1 inch diameter customer supplied filters
of up to 3/8 inch thickness . Where high intensity sources
are used (over 1990 watts/cm 2 ), neutral density filters
can be used to extend the range of the J16. (An NO 1
filter has 10% transmission, and ND 2 has 1 %, etc) .
These filters may be held with an optional filter holder .
Where the 1 sq cm sensor is not completely tilled by
the source, for example with a laser beam, the reading
obtained represents microwatts instead of p watts/cmz or
mi ¬ liwatts x 10-" instead of milliwalts/mz (Option 02) .
Small variations in sensor uniformity may add ±5%
uncertainty to this measurement.
The J6512-A has a low-profile defector head and sixfoot cable.
Note : The J6502-A/J6512-A are calibrated for a flat
response using the latest NBS standards . If you require
probes that are compatible with the original J6502/
J6512, then order Option 10 on J6502-A or J6512-A.

u

J65B8 8° LUMINANCE PROBE

The J6503 measures luminance in fool-lamberts
(candelas/ml (nit) with Option 02) where light scattered
or emitted by a surface must be measured . The probe is
pointed at the emitting surface .
The probe's response is closely matched to the CIE
photopic curve, ensuring accurate results even when
measuring spectrally different light sources.
The acceptance angle is approximately 8 degrees,
which is determined by internal field stop aperatures .
Providing that the 8 degrees field is uniformly filled, the
probe can be held at any distance from the source . At 21
inches from the front of the probe, the field of view is
approximately three inches in diameter . The fooflambert
or candelas/ml (nit) (Option 02) indicator automatically
lights when the J6503 is connected.

10 LU1,61HARGE PROBE
The J6523 will measure the luminance in footlamberts
(candelas/m2 with Option 02) of a spot as small as 0.32
inch in diameter . By using commercially available 55-mm
stackable close-up lenses, areas as small as 0.035 inch
(+10 diopters) can be measured . These 55-mm lenses are
physically similar to threaded 55 mm photography stores .
(See Application Note 58-AX-3252 .)
The 1 degree angle represents 0 .21 inch per foot of
distance from the probe to the source . Thus at 10 feet, the
J6523 measures a 2.1 inch diameter spot.
The probe includes an optical sighting system with a
9 degree viewing field. The focusing range is 18 inches to
infinity, closer with 55-mm close-up lenses . The spectral
response is closely matched to the CIE photopic curve
(color-corrected) for accurately measuring all commonly
used light sources. The J6523 may be attached to the J16
or used with an optional probe extension cable . A
standard 1/4 inch x 20 threaded socket allows i1 to be
used on a tripod or an optical bench.

J6505 PROBE FOR RED LEDs

Note: For yellow or green LEDs use the J6501 probe,
for infrared LEDs use the J6502-A probe.
The J6505 measures illuminance in foot candles
(lumens/M2 (tux) with Option 02), which can easily be
converted into luminous intensity in candelas . (See
Application Notes 58-A-2635 and 58-A-2704-1 .)
An adapter supplied with the probe provides a
controlled spacing between the sensor and the LED under
test . The adapter excludes ambient light, and has internal
baffles to prevent stray reflections during the measurement . Three inserts are supplied with the adapter to fit
common sizes of LEDs (0 .080 inch, 0.125 inch, and
0.200 inch diameter) . These inserts are made of soft
plastic that can be easily modified by the user.
With the adapter in place, a reading of 1 footcandle of
the J16 represents 100 millicandelas of luminous
intensity. With a metric version of the J16/J6505 (Option
02), 1 lumen/M2 represents 10 millicandelas.
In the J6505, the silicon photodiode-filter combination
provides an excellent match to the photopic curve in the
region 600 nm to 710 nm . This close match requires
compromising in the 360 to 600 nm region, making this
probe unsuitable for general illuminance measurements .
For LED measurements in the yellow or green regions,
the LED adapter must be used with the J6501, and the
same conversion factor for luminous intensity applies .

J65B1 ILLUIAINrANCE PROBE

Where cosine correction is unneccessary, the standard
J6701 probe is available with the same photopic
correction and units as the J6511 . The J6501 can be
used to measure green and yellow LEDs .

To order, call your local Tektronix Sales office, at call Tek's National MarV:etlng Center .
Toll free : 1-800-426-2200, Ext . 99 .



Source Exif Data:
File Type                       : PDF
File Type Extension             : pdf
MIME Type                       : application/pdf
PDF Version                     : 1.0
Linearized                      : No
XMP Toolkit                     : 3.1-701
About                           : uuid:4562e668-7502-4816-9740-57a5c15302f9
Producer                        : OmniPage 11 http://www.scansoft.com
Caption Writer                  : -
City                            : -
State                           : -
Country                         : -
Credit                          : -
Source                          : -
Headline                        : -
Instructions                    : -
Transmission Reference          : -
Creator Tool                    : OmniPage 11 http://www.scansoft.com
Create Date                     : 2004:07:02 13:52:19Z
Modify Date                     : 2006:05:12 11:18:31-07:00
Metadata Date                   : 2006:05:12 11:18:31-07:00
Document ID                     : uuid:9a587200-facb-410a-be4e-e7e29a22588d
Instance ID                     : uuid:7d4d6408-c05c-4288-88a0-a7ad8e07bcf1
Web Statement                   : -
Marked                          : False
Format                          : application/pdf
Rights                          : -
Creator                         : -
Has XFA                         : No
Page Count                      : 3
Author                          : -
EXIF Metadata provided by EXIF.tools

Navigation menu