Sekonic RT-20PW, RT-3PW Operating Manual

Transmitter

This manual is specic for PocketWizard® operation.
Please read this operating manual and safety precaution so that you will fully understand the features
and operation of this product.
Keep the operating manual in a safe place for future use.

RT-20PW
RT-3PW

Operating Manual

■

Safety Precautions

Before using this product, please read this "Safety Precautions" for proper operation.

WARNING

The WARNING symbol indicates the possibility of death or serious
injury if the product is not used properly.

CAUTION

The CAUTION symbol indicates the possibility of minor to
moderate personal injury or product damage if the product is not
used properly.

NOTICE

The NOTICE symbol indicates cautions or restrictions when using
the product. Please read all notes to avoid errors in operation.

NOTE

The reference symbol indicates additional information about the
controls or related functions.
Reading these is recommended.



The arrow indicates reference pages.

WARNING

Keep the materials used in this product out of the reach of children to
prevent accidental ingestion and misuse.

CAUTION

To avoid damage from static electricity, remove the static electricity from
your body by touching metals located nearby (e.g. door knob, aluminum
sash) before touching the radio transmitting module.

■

Terms and Trademarks

PocketWizard® and ControlTL® are the registered trademarks of LPA Design.

NOTICE

● Reproduction of all or any part of this document without permission is strictly forbidden.

● The product concerned and/or this manual may be subject to changes for the product's

specication modications and other reasons without prior notication.

● The screens in this manual may differ from the actual displays of the meter you are

using. (Colors, letters, etc.)

©2017 All Rights Reserved.

ii

■

List of Applicable Model

This transmitter is an accessory dedicated to the following model (light meter).

Model

Transmitter Model Manufacturer/Frequency L-858D Series Serial No.

RT-20PW

PocketWizard

(FCC & Canada IC):

344.0 to 354.00 MHz

JY11-XXXXXX(Canada IC)

JY1L- XXXXXX(FCC)

RT-3PW

PocketWizard (CE & NCC):

433.42 to 434.42 MHz

JY11-XXXXXX(CE)

JY1G- XXXXXX(NCC)

■

Intended Use

This product can be used in the following situations.

●

Radio wave-based ash light triggering or output power control.

●

Radio wave-based modeling lamp ON/OFF.

■

Intended Users

The intended users of this product are those who are engaged in shooting or related
businesses, such as photographers, who use the ash units.

iii

■

Features of the RT-20PW and RT-3PW

To use the Radio Triggering Mode of the L-858D after the transmitter is installed, the ash
unit must be equipped with a radio function supported by a specied manufacturer, or a
receiver supporting the radio function must be connected to the ash unit.
Using the Radio Triggering Mode, ring a ash or adjusting the output power by yourself
can be easily accomplished.

●

Take measurements by placing the meter at the subject position with the light receptor
(retracted lumisphere) facing toward the light sources of main light and ll light directly.
Adjust the measured values for the desired lighting ratio.

●

Turn on all light sources to measure the nal exposure, and point the lumisphere
(extended lumisphere) at the camera from the position of subject. (P13)

Note that a transmitter of RT-20PW or RT-3PW can support two types of radio system.
The user can select which radio system to use in the custom setting of the L-858D light
meter.
For details on each radio system, refer to the descriptions in the relevant pages.

Regulation Radio System Radio CH/Zone Function

RT-20PW
FCC &
Canada IC

Standard

CH1 to 32 Flash light triggering

Zone: A to D

ControlTL

CH1 ~ 20 Flash light output power

control and modeling lamp
ON/OFF

Zone: A to C

RT-3PW
CE & NCC

Standard

CH1 to 32 Flash light triggering

Zone: A to D

ControlTL

CH1 to 3 Flash light output power

control and modeling lamp
ON/OFF

Zone: A to C

Light meter (with the
transmitter installed)

Light source (with a
receiver built-in/installed)

Camera

Zone A Zone AZone B Zone B

Subject

Figure 2

Subject

Figure 1

iv

■

Restrictions

There are some cautions and restrictions regarding the use of this product.
Please read and understand the following before using the meter.

NOTE

● The operation of this product may change without prior notice due to specication
changes or other reasons. Therefore, the contents of this operating manual may differ
from actual operation of the product.

URL: www.sekonic.com/support/instructionmanualuserguidedownload.aspx

● The safety-related precautions such as "Safety Guide and Maintenance" and "Safety
Precautions" conform to the legal and industry standards that were applicable at the time
this operating manual was created. Therefore, this manual may not contain the latest
information. If you are using the previous operating manual, please download and refer to
the latest operating manual.

● The product may contain printing materials such as cautions related to safety and/or
printing errors as a supplement to the operating manual.

● The contents of this operating manual may be reproduced for non-commercial purposes
and for personal use only. However, the reproduced material must contain the copyright
notice of our company.
However, such copies must have our copyright notice as a condition.

● The screens in this operating manual may differ from the actual displays of the meter you
are using. (Colors, letters, etc.)

■

Accompanying Accessories

The following items are included with the Transmitter RT-20PW or RT-3PW. After opening
the package. Please be sure to check that all noted items are included.
If any items are missing, please contact the distributor or the reseller you purchased the
transmitter from.

Transmitter Startup Guide

English

The steps for installing the transmitter module and meter setup are common
for RT-EL/PX (Elinchrom®, Phottix®) and RT-20PW/RT-3PW (PocketWizard®)
transmitters.

Before installing the transmitter, please read the operating manuals for
the meter and transmitter as well as the safety precautions so that you will
fully understand the features and operation of this product. Then keep the
manuals and this Startup Guide in a safe place for future use.

1. Downloading Manuals

Please visit www.sekonic.com to download the latest
version of meter and transmitter operating manual.
Use the URL below for direct access.

URL : www.sekonic.com/support/instructionmanualuserguidedownload.aspx

2. Installing the Transmitter

1) Turn OFF the meter.

2) Unlatch and remove the Battery
cover.

3) Remove the Transmitter connector
cover.

4) Align the connector pins with those of the transmitter module and
insert the Transmitter.

* Be sure to reattach the connector cover if the Transmitter is removed.

5) Insert the Battery cover tabs (three) into the receiving holes in the
meter body, press the cover down and latch it closed.

3. Setting Radio System
Preference

Use the Custom Setting in Menu to set
the Radio System Preference for the

fl ash system in use.

RT-EL/PX: Elinchrom Normal/Speed
mode or Phottix Strato

II

RT-20PW/RT-3PW: ControlTL, Standard
or both

4. Selecting Measuring Mode

Touch the icon to enter the Measuring Mode
Selection screen.

1

Radio Triggering Flash Mode

Detects fl ash brightness after Measuring

button is pressed to send radio transmitted

signal to radio receiver connected to fl ash.

Displays F-stop value.

2

Radio Triggering Multi Flash Mode

Detects and accumulates fl ash brightness

after Measuring button is pressed to send
radio transmitted signal to radio receiver

connected to fl ash. Displays F-stop value.

3

Flash Duration Analysis Radio

Triggering Mode

Detects fl ash brightness after Measuring

button is pressed to send radio transmitted

signal to radio receiver connected to fl ash.
Displays F-stop value and fl ash duration

time.

5. Setting Channel and Zone/Group

Use Tool Box screen to set the meter
(transmitter) to the same channel and zone(s)
/ group(s) as the receivers.

* For details, see the operating manuals for

transmitter.

Transmitter

RT-EL/PX (2.4Ghz)
RT-20PW (344Mhz)
RT-3PW (433Mhz)

Startup Guide

[Measuring screen]

[Measuring Mode
Selection screen]

[Tool Box screen]

RT-20PW
RT-3PW

(PocketWizard

®

)

RT-EL/PX

(Elinchrom

®

Phottix

®

)

[Radio System Preference screen]

1

2

3

v

1. Before Use

........................................................................................................................................................................

1

1-1 

Installing the Transmitter

..........................................................................................................................

1

2. PocketWizard Wireless Technology

....................................................................................................

2

2-1 

Overview

...........................................................................................................................................................

2

2-2 

Setting the Radio System

........................................................................................................................

4

2-3 

Setting the Radio CH/Zone

.....................................................................................................................

6

2-4 

Measuring

........................................................................................................................................................

9

2-4-1 

Radio Triggering Flash Mode

.................................................................................................................

9

1) How to Use Flash Triggering

.............................................................................................................

9

2) How to Use Flash Power Control

..................................................................................................

12

2-4-2 

Radio Triggering Multi (Cumulative) Flash Mode

.......................................................................

14

1) How to Use Flash Triggering

...........................................................................................................

14

2) Multi Clear

.................................................................................................................................................

16

2-4-3 

Flash Duration Analysis Radio Triggering Mode

.........................................................................

17

1) How to Use Radio Triggering

..........................................................................................................

17

2) How to Use Flash Power Control

..................................................................................................

21

3) Flash Duration Analysis t Value

.....................................................................................................

24

3. Product Information

.............................................................................................................................................

26

4. Regulation

.......................................................................................................................................................................

28

5. Radio Channel Frequencies

.......................................................................................................................

29

6. Legal Requirements

.............................................................................................................................................

30

7. Troubleshooting

.......................................................................................................................................................

31

Table of Contents

■Safety Precautions

..............................................................................................................................................................

i

■Terms and Trademarks

.....................................................................................................................................................

i

■List of Applicable Model

..................................................................................................................................................

ii

■Intended Use

...........................................................................................................................................................................

ii

■Intended Users

......................................................................................................................................................................

ii

■Features of the RT-20PW and RT-3PW

............................................................................................................

iii

■Restrictions

..............................................................................................................................................................................

iv

■Accompanying Accessories

........................................................................................................................................

iv

1

1. Before Use ●

1.

Before Use

1-1  Installing the Transmitter

CAUTION

To avoid damage from static electricity, remove the static electricity from
your body by touching metal objects located nearby (e.g. door knob,
aluminum sash) before touching the radio transmitting module.

The numbering below refers to the L-858D Operating Manual.

1.

Turn OFF the meter.

2.

Unlatch e and remove the Battery Cover d.

3.

Remove the Transmitter Connector Cover i.

4.

Align the connector pins with those of the Transmitter Module
Compartment h and insert the Transmitter.

5.

Insert the Battery Cover d tabs (three) into the receiving holes
in the meter body, press the Battery Cover d down and close the
Battery Cover Latch e.

Battery Cover

d

Transmitter

Battery Cover Latch

e

Transmitter Connector
Cover

i

Transmitter Connector Cover

i

Connector pins Connector

pins

Transmitter Module
Compartment

h

Battery Cover

d

Tabs (three)

Transmitter

Battery Cover Latch

e

2

2. PocketWizard Wireless Technology ●

2.

PocketWizard Wireless Technology

2-1  Overview

Plug-in external or built-in PocketWizard receivers are required to work with the
PocketWizard wireless technology.
Once the transmitter module is installed in your L-858D, you will be able to adjust the

power level and trigger ashes to get the look you desire. For more information about the
meter, refer to the L-858D Operating Manual.
For more information about PocketWizard, go to www.pocketwizard.com.

<Standard System>

PocketWizard Standard system provides simple triggering and do not allow power

control. The Standard system features 32 channels: Channels 1-16 re single trigger
signals; Channels 17-32 have four zones (A, B, C, D) which enable triggering four
separate ashes on each channel.

<ControlTL System>

When used with ControlTL receivers, the L-858D is capable of controlling the power
level of the compatible ashes connected.
The ControlTL system features 20 channels for FCC&IC version or 3 channels for
CE version, and three zones (A, B, C) allowing control of three separate ashes on

each channel.

<Radio Frequency>

To comply with local broadcast regulations, Sekonic wireless systems sold in the

various markets around the world are designed to operate at different frequencies.
Sekonic meters have built-in transmitting antennas that are specically tuned for

their market area. When purchasing and/or installing a transmitter module or using
the meter with a receiver, be sure that the meter and receiver are designed to be

used in your location and use the same frequency.

●

USA/North American market frequencies (FCC & Canada IC): 344.0 to 354.0MHz

●

European and other market frequencies (CE, NCC or OFCA): 433.42 to

434.42MHz

3

2. PocketWizard Wireless Technology ●

NOTICE

Successful radio triggering depends on several factors. Please read these setup steps
before using the L-858D to radio trigger ash units.

1. It is the best to position the meter in sight of the radio receiver (or ash head).

2. Position the radio receiver so that it is away from large metallic objects, concrete, or
containers of water (like people).

3. Secure the radio receiver to the ash using hook-and-loop-type attachment tape or
the threaded socket on the radio. Make sure the radio’s antenna is above the ash

body or generator pack. Do not allow the receiver antenna to contact metal objects.

4. Sometimes, conditions do not allow radio reception. These could include strong
local radio interference or being near objects that block or absorb the signal.
Repositioning the radio, even slightly, can reestablish contact. Alternatively, check to
see if the radio receiver is behind objects that absorb or block radio waves, such as

concrete, metal or low hill.

5. Operation is the best when the meter to receiver distance is within 30 meter (100
feet).

4

2. PocketWizard Wireless Technology ●

Operation

1.

Press the Menu Button 9 on the meter.

The Menu Screen is displayed.

2.

Touch [Custom Setting] Button.

The Custom Setting Menu Screen is
displayed.

3.

Touch the [Next Page] Icon ( )
of the Custom Setting Menu Screen
to display the [Radio System
Preference] on Page 3.

4.

Touch [Radio System Preference] Button.

The Radio System Preference Screen is displayed.

5.

Touch the system to use.

Touch the desired radio button or an area around the item name to select the

[ControlTL], [Standard] or both.

6.

Touch the [Close] Button.

The display returns to the Custom Setting Menu Screen.

2-2  Setting the Radio System

In the Radio System Preference Screen, select Standard or ControlTL according to the

setting on the PocketWizard receiver.

Power Button

5

Memory Button

7

Measuring
Button

6

Menu Button

9

[Menu Screen]

[Custom Setting Screen]

Page3

[Radio System Preference

Screen]

[Close] Button

5

2. PocketWizard Wireless Technology ●

7.

Touch the [Close] Button on the Custom Setting Menu Screen.

The display returns to the Menu Screen.

8.

Touch the [Close] Button on the Menu Screen.

The display returns to the Measuring Screen.

The selected radio system indication along with channel number and zones are

displayed on the Measuring Screen.

Standard System, Channel (1 to 16)

Standard System, Channel (17 to 32) and Zones (A to D)

ControlTL System, Channel and Zones (A to C)

NOTICE

Set both the meter and plug-in external or built-in PocketWizard receivers to the same

system (Standard and/or ControlTL).

[Custom Setting Menu Screen] [Menu Screen] [Measuring Screen]

[Close] Button [Close] Button

6

2. PocketWizard Wireless Technology ●

2-3  Setting the Radio CH/Zone

Set the radio channel and zones used on Standard System.

Operation

1.

Select any Radio Mode in the Measuring Mode Screen.
(P9 “ ”, P14 “ ”, P17 “ ”)

2.

Touch the [Tool Box] Icon ( ) on the Measuring Screen.

The Tool Box Screen is displayed.

3.

Touch the [Next Page] Icon ( ) of the Tool Box to display the
Tool Box showing [Radio CH/Zone].

4.

Touch [Radio CH/Zone] Button.

The Radio CH/Zone Setting Screen is displayed.

[Measuring Screen]

[Tool Box Screen]

Page 1

[Tool Box Screen]

Page 2

* When the Multiple (Cumu.) Flash Mode is

selected, the displayed information are different
from those shown above.

[Tool BOX] Icon To Next Page

7

2. PocketWizard Wireless Technology ●

5.

Touch the [STD] or [CTL] tab to select the radio system.

STD stands for Standard, and CTL stands for ControlTL.

6.

Select the channel to use.

Touch the arrows / or slide your nger over the screen to select
Channel.

Standard: from 1 to 32.

ControlTL: from 1 to 20 (for FCC and Canada IC), from 1 to 3 (for CE and NCC)

7.

Select the desired Zones.

Touch the one or more Zones to select the ash units in use.

Stanard: from A to D (When the channel number from 17 to 32 is selected, Zones
appear.)

ControlTL: from A to C

* Zones to use can be selected from Power Control Screen as well.

[Radio CH/Zone Setting

Screen (Standard)]

[Radio CH/Zone Setting

Screen (ControlTL)]

Channel numbers Channel numbers

STD tab CTL tab

Zones Zones

8

2. PocketWizard Wireless Technology ●

8.

Touch [OK] Button.

The setting is entered, and the display returns to the Measuring Screen.

Touch the [Cancel] Button to return to the Measuring Screen without making the
modication.

NOTICE

Set both the meter and plug-in external or built-in PocketWizard receivers to the same radio

system (Standard or ControlTL).

NOTE

● The last selected Zones in either Power Control Screen or Radio CH/Zone Setting
Screen in Tool Box are activated in Measuring Screen.

● For touch/slide operations, refer to the Operating Manual of the light meter.

● For radio CH frequencies, refer to “5. Radio Channel Frequencies”. ( P29)

[Radio CH/Zone Setting

Screen (Standard)] [Measuring Screen]

[OK] Button [Cancel] Button

Zones

Radio CH/

Zones

[STD] tab

Channel

Number

9

2. PocketWizard Wireless Technology ●

2-4  Measuring

Radio triggering measurement is available in the following modes:

●

Radio Triggering Flash Mode

●

Radio Triggering Multi (Cumulative) Flash Mode

●

Flash Duration Analysis Radio Triggering Mode

2-4-1  Radio Triggering Flash Mode

The meter detects ash brightness after Measuring Button is pressed to send radio
transmitted signal to radio receiver connected to ash. F-stop value is displayed for input
ISO sensitivity and shutter speed. Depending on the radio system in use, the meter
controls the output power of ash units and turns ON/OFF the modeling lamps.

Operation

1)

How to Use Flash Triggering

1.

Touch the [Measuring Mode] Icon on the Measuring Screen.

The Measuring Mode Screen is displayed.

2.

Touch the [Radio Triggering Flash Mode] Icon ( ) in
Measuring Mode Screen.

When it is selected, the display changes to the Measuring Screen.

3.

Set the light receiving method.

Switch to the Incident light, extended lumisphere ( )/retracted lumisphere
( ), or reected light.

[Measuring Screen] [Measuring Mode Screen] [Measuring Screen]

[Measuring Mode] Icon

10

2. PocketWizard Wireless Technology ●

4.

Set the ISO sensitivity value on the [ISO]
Icon.

5.

Set the shutter speed on the [T] Icon.

NOTICE

Make sure that the settings are within the specications of the camera and ash system.

6.

Make sure that the set radio system (STD
or CTL), channel and Zones are the same
between the meter and receivers in use.
(P4, P6)

[Measuring Screen]

Setting Value

[Measuring Screen]

Radio CH and Zones

11

2. PocketWizard Wireless Technology ●

7.

Press the Measuring Button 6.

The ash will re and the measured value (F-stop) will

be displayed.

NOTICE

In case of the followings, please follow “Cord Flash Mode” ( ).

● When ring the ash, if the ash brightness is lower than the ambient light, the meter
may fail to detect the ash light.

● Rapid start uorescent lamps and special lighting are sometimes mistaken for ash, and
accidentally measured.

● Even if the ash is not red, when a sudden light change occurs in the light receptor,
measurement may be made.

● The waveform of a ash bulb has a slight slope and there is a possibility that the light

meter cannot recognize the ash bulb.

NOTE

For radio CH frequencies, refer to “5. Radio Channel Frequencies”. ( P29)

[Measuring Screen]

Measured value

(F-stop)

12

2. PocketWizard Wireless Technology ●

2)

How to Use Flash Power Control

Power Control Function is available with ControlTL system only. Make sure that plug­in external or built-in PocketWizard receivers and ash unites are compatible with the
function of ash power control.

1.

Touch the [Power Control] Icon ( ) on the Measuring Screen.

The Power Control Screen is displayed.

Take measurements by placing the meter at the subject position with the light receptor

(retracted lumisphere) facing toward the light sources of main light and ll light directly.
Adjust the measured values for the desired lighting ratio. (Figure 1. of Piii)

2.

Select one or more Zones (A to C) 4 and the Power Bar 2 will be
activated.

Only ash unit with the receiver set to the selected Zone is red.

3.

Press the Measuring Button 6.

The ash units of the selected Zones are red, and the

measured value (F-stop) is displayed at the top of the bar 1
and the “F Total” box at the bottom right of the screen 6.

4.

Move the slider or touch the [+] or [ - ] Buttons

2 to change the power of ash.

The set power level is displayed in the area above the slider

1

.

NOTICE

Although up to +/- 3 step of value (F-stop) can be set, the adjustment must be within the
upper and lower limit of the power level specication of the ash unit.

[Measuring Screen] [Power Control Screen]

[Power Control] Icon

1

2

3
4

6

5

[Power Control Screen]

13

2. PocketWizard Wireless Technology ●

5.

Press the Measuring Button 6 again.

Check that the output power of the ash is the desired

value.

6.

Repeat Steps 2 to 5.

Repeat the procedure for other Zones until each ash unit’s

brightness is set to proper value for the effect you want.

7.

Select all Zone buttons you want to use, and
press the Measuring Button 6.

Point the meter (lumisphere) at the camera from the
position of subject to make a measurement.

All ash units of the selected Zone are red, and the total exposure (F-stop) 6 is shown
in the main display. (Figure 2. of Piii)

NOTE

● To set ISO sensitivity and shutter speed, press the [Radio Triggering Flash Mode] Icon
( ) to return to the Measuring Screen.

● The last selected Zones in either Power Control Screen or Radio CH/Zone Setting
Screen in Tool Box are activated in Measuring Screen.

● Standard system radios can be used along with ControlTL system radios to trigger non­power control ashes at the same time. When a Standard channel number is set from

1 to 16, ( ) (classic channel) button appears in the position of 5. When a channel

number from 17 to 32 is selected, the Zones ( , , , ) will appear at the

right of the screen 7 . Touch ( ) or Zones ( , , , ) to toggle them on
or off.

● Press Modeling Lamp ON ( ) or OFF ( ) if necessary after selecting the desired
Zones.

3

6

5

7

[Power Control Screen]

(After Measurement)

[Power Control Screen]

(Standard CH1 to 16)

[Power Control Screen]

(Standard CH17 to 32)

14

2. PocketWizard Wireless Technology ●

2-4-2  Radio Triggering Multi (Cumulative) Flash Mode

This Measuring Mode is used when the light generated by the ash at one time is
inadequate for the desired F-stop setting. Repeated ash pops can be accumulated until
the desired F-stop value is displayed. The measured value (F-stop) is displayed for each
trigger of the ash. The cumulative count is innite. Up to 99 times is displayed in the
Status/Title eld, however, the cumulative count returns to 0 (zero) for more than 100
times (0=100, 1=101, 2=102, etc.).
In the Power Control Screen, the Multi (cumulative) ash measurement is not available
(only single measurement is made).

Operation

1)

How to Use Flash Triggering

1.

Touch the [Measuring Mode] Icon on the Measuring Screen.

The Measuring Mode Screen is displayed.

2.

Touch the [Radio Triggering Multi Flash Mode] Icon ( ) in
Measuring Mode Screen.

When it is selected, the display changes to the Measuring Screen.

3.

Set the light receiving method.

Switch to the Incident light, extended lumisphere ( )/
retracted lumisphere ( ), or reected light.

4.

Set the ISO sensitivity value on the [ISO] Icon.

5.

Set the shutter speed on the [T] Icon.

[Measuring Screen] [Measuring Mode Screen] [Measuring Screen]

[Measuring Mode] Icon

[Measuring Screen]

Setting Value

15

2. PocketWizard Wireless Technology ●

NOTICE

Make sure that the settings are within the specications of the camera and ash system.

6.

Make sure that the set radio system (STD
or CTL), channel and Zones are the same
between the meter and receivers in use.
(P4, P6)

7.

Press the Measuring Button 6.

The measured value (F-stop) is
displayed. Press the Measuring
Button

6

again to re a ash and

measure until the desired F-stop is
displayed.

The accumulated measured value
(F-stop) and the cumulative count are
displayed.

NOTICE

● In case of the followings, please follow “Cord Multi (Cumu.) Flash Mode” ( ).

• When ring the ash, if the ash brightness is lower than the ambient light, the meter

may fail to detect the light.

• Rapid start uorescent lamps and special lighting are sometimes mistaken for ash

and accidentally measured.

• Even if the ash is not red, when a sudden light change occurs in the light receptor,

measurement may be made.

• The waveform of a ash bulb has a slight slope and there is a possibility that the light

meter cannot recognize the ash bulb.

● The EV scale cannot be displayed in the Radio Triggering Multi (Cumu.) Flash Mode.

NOTE

For radio CH frequencies, refer to “5. Radio Channel Frequencies”. ( P29)

[Measuring Screen]

[Measuring Screen]

Radio CH and Zones

Measured value

(F-stop)

Cumulative count

16

2. PocketWizard Wireless Technology ●

2)

Multi Clear

1.

Touch the [Tool Box] Icon ( ) on the Measuring Screen.

The Tool Box Screen is displayed.

2.

Touch the [Next Page] Icon ( ) of the Tool Box to display the
Tool Box showing [Multi Clear].

This button is only enabled during measurement.

If the button is grayed out, the cumulative measurement is not made and the count

cannot be cleared.

3.

Touch the [Multi Clear] Button of the Tool Box.

The cumulate value is cleared, and the display returns to the Measuring Screen.

If you do not clear the value, touch the [Close] Button.

The display returns to the Measuring Screen.

[Measuring Screen]

[Tool Box Screen]

Page 1

[Tool Box Screen]

Page 2

[Measuring Screen] [Cumulative Count]

To Next Page[Tool BOX] Icon [Close] Button

Cumulative count

Cumulative count

17

2. PocketWizard Wireless Technology ●

2-4-3  Flash Duration Analysis Radio Triggering Mode

The meter detects ash brightness after Measuring Button is pressed to send radio
transmitted signal to radio receiver connected to ash. F-stop, ash duration time and
graph of ash waveform are displayed for input ISO sensitivity and shutter speed.
Flash Duration Analysis is performed with incident light Measuring Mode.

Operation

1)

How to Use Radio Triggering

1.

Touch the [Measuring Mode] Icon on the Measuring Screen.

The Measuring Mode Screen is displayed.

2.

Touch the [Flash Duration Analysis Radio Triggering Mode] Icon
( ) in Measuring Mode.

When it is selected, the display changes to the Measuring Screen.

If the reected light mode is set, the Flash Duration Analysis Mode cannot be selected.
Before switching to the Measuring Mode Screen, set the light receiving method to the
incident light and select the Flash Duration Analysis Radio Triggering Mode.

3.

Set the light receiving method.

Switch to the extended lumisphere (

)

or retracted lumisphere ( ).

[Measuring Screen] [Measuring Mode Screen] [Measuring Screen]

[Measuring Mode] Icon

18

2. PocketWizard Wireless Technology ●

4.

Set the ISO sensitivity value on the [ISO]
Icon.

5.

Set the shutter speed on the [T] Icon.

NOTICE

Make sure that the settings are within the specications of the camera and ash system.

6.

Set the Flash Duration Analysis t value. ( P24)

7.

Make sure that the set radio system (STD
or CTL), channel and Zones are the same
between the meter and receivers in use.
(P4, P6)

[Measuring Screen]

Setting Value

[Measuring Screen]

Radio CH and Zones

19

2. PocketWizard Wireless Technology ●

8.

Press the Measuring Button 6.

The ash will re, and the ash duration time and the measured value (F-stop) for

input ISO sensitivity and shutter speed will be displayed.

NOTICE

● The ash duration time and graph are displayed in the Flash Duration Analysis Radio
Triggering Mode, however, they cannot be stored in the memory. They are cleared if the
Measuring Mode is changed or the POWER Button is turned OFF.

● The incident light measurement can only be used in Flash Duration Analysis Radio
Triggering Mode.

● In case of the followings, please follow “Flash Duration Analysis Cord Mode”( ).

• When ring the ash, if the ash brightness is lower than the ambient light, the meter

may fail to detect the light.

• Rapid start uorescent lamps and special lighting are sometimes mistaken for ash

and accidentally measured.

• Even if the ash is not red, when a sudden light change occurs in the light receptor,

measurement may be made.

• The waveform of a ash bulb has a slight slope and there is a possibility that the light

meter cannot recognize the ash bulb.

● If the measured ash duration time is longer than the input
shutter speed, an appropriate F-stop cannot be measured.
The yellow “Under” indication appears. In this case, slower
the shutter speed than the ash duration time and measure

again.

[Measuring Screen]

[Measuring Screen]

Flash component

Measured value (F-stop)

Flash duration time

20

2. PocketWizard Wireless Technology ●

NOTE

● When the measured value display area is touched, both ash waveform graph and measured
value are displayed. When it is touched again, the display returns to the previous screen.

● Measure the ash light characteristics in a darkroom without ambient light.

● For radio CH frequencies, refer to “5. Radio Channel Frequencies”. ( P29)

[Measuring Screen]

[Flash Duration Analysis Radio Triggering

Mode Flash Waveform Graph Screen]

Touching the

Measured

value area
changes the
display.

* The graph screen cannot be used to make measurements.

21

2. PocketWizard Wireless Technology ●

2)

How to Use Flash Power Control

Power Control Function is available with ControlTL system only. Make sure that plug­in external or built-in PocketWizard receivers and ash units are compatible with the
function of ash power control.

1.

Set the Flash Duration Analysis t value. ( P24)

2.

Make sure that the set radio system (STD or CTL), channel and
Zones are the same between the meter and receivers in use.
( P4, P6)

3.

Touch the [Power Control] Icon ( ) on the Measuring Screen.

The Power Control Screen is displayed.

4.

Select one or more Zones (A to C) 4 and the Power Bar 2 will be
activated.

Only ash unit with the receiver set to the selected Zone is red.

[Measuring Screen]

[Power Control Screen]

(ControlTL+Standard CH1 to 16)

[Power Control] Icon

1

2

3
4

6

5

22

2. PocketWizard Wireless Technology ●

5.

Press the Measuring Button 6.

The ash units of the selected Zones are red,

and the measured value (F-stop) is displayed at
the top of the bar 1 and the “F Total” box at the
bottom right of the screen 6 .

6.

Move the slider or touch the [+] or [-]
Buttons 2 to change the power of

ash.

The set power level is displayed in the area
above the slider 1 .

NOTICE

Although up to +/- 3 step of value (F-stop) can be set, the adjustment must be within the
upper and lower limit of the power level specication of the ash unit.

7.

Press the Measuring Button 6 again.

Check that the output power of the ash is the desired value.

8.

Press [Measuring Mode] Icon ( ).

The display returns to the Measuring Screen, and the ash duration time and

the measured value (F-stop) for input ISO sensitivity and shutter speed will be
displayed.

[Power Control Screen]

(ControlTL+Standard CH1 to 16)

[Power Control Screen]

(After Measurement) [Measuring Screen]

[Flash Duration Analysis

Radio Triggering Mode Flash

Waveform Graph Screen]

[+]Button

[-]Button

23

2. PocketWizard Wireless Technology ●

NOTE

● When the measured value display area is touched, both ash waveform graph and measured
value are displayed. When it is touched again, the display returns to the previous screen.

● Measure the ash light characteristics in a darkroom without ambient light.

● To set ISO sensitivity and shutter speed, press the [Flash Duration Analysis Radio

Triggering Mode] Icon (

) to return to the Measuring Screen.

● The last selected Zones in either Power Control Screen or Radio CH/Zone Setting
Screen in Tool Box are activated in Measuring Screen.

● For radio CH frequencies, refer to “5. Radio Channel Frequencies”. ( P24)

[Measuring Screen]

[Flash Duration Analysis Radio Triggering

Mode Flash Waveform Graph Screen]

Touching the

Measured

value area
changes the
display.

* The graph screen cannot be used to make measurements.

24

2. PocketWizard Wireless Technology ●

3)

Flash Duration Analysis t Value

The t value can be set in steps of 0.1 at a range of 0.1 to 0.9.
The ash duration time varies depending on the input t value.

1.

Touch the [Tool Box] Icon ( ) on the Measuring Screen.

The Tool Box Screen is displayed.

2.

Touch the [Next Page] Icon ( ) of the Tool Box to display the
Tool Box showing the [Flash Duration Analysis t Value] Button.

This button is enabled if Flash Duration Analysis Mode is selected. If it is grayed
out, check the Measuring Mode.

3.

Touch the [Flash Duration Analysis t Value] Button of the Tool
Box.

The Flash Duration Analysis t Value Screen is displayed.

If you do not change this number, touch the [Close] Button.

[Measuring Screen]

[Tool Box Screen]

Page 1

[Tool Box Screen]

Page 2

To Next Page[Tool BOX] Icon [Close] Button

25

2. PocketWizard Wireless Technology ●

4.

Enter the “Reference” of 0.1 to 0.9 by touching the numeric value.

The t value can be set in steps of 0.1 at a range of 0.1 to 0.9.

The rst “0.” is xed. Enter the rst digit decimal only. (To set “0.1”, enter “1”.)

5.

Touch [OK] Button.

The setting is entered, and the display returns to the Measuring Screen.

Touch the [Cancel] Button to return to the Measuring Screen without making the
modication.

NOTE

Two rules apply to the reference ash duration

time.

t0.5 = Effective ash duration time
t0.1 = Total ash duration time
After ash ring, the time at which the
maximum intensity drops by half is called “t0.5”.

The time at which the maximum intensity drops

to 1/10 is called “t0.1”.
Generally, “t0.5” is called the ash duration

time.

[Flash Duration Analysis t Value Screen]

[OK] Button [Cancel] Button

The input numeric
value is displayed.

[Measuring Screen]

t

0.1

t

0.2

t

0.3

t

0.4

t

0.5

t

0.6

t

0.7

t

0.8

t

0.9

26

3. Product Information ●

Operation

1.

Touch the Menu Button 9 on the meter.

The Menu Screen is displayed.

2.

Touch the [Next Page] Icon ( ) to display page 2 of the Menu
Screen, and touch the [Product Information] Button.

The Product Information Screen is displayed.

3.

Product Information

This screen displays the detailed information not displayed in the Measuring Screen.

[Product Information Screen]

1

2

3

4

5

No. Item Description

1

Model Name

Displays the model number of
the meter.

2

Serial Number

Displays the serial number of
the meter.

3

Version

Displays the rmware version.

4

User
Information

Displays user-input information

such as ownership or meter
function, etc which is set in the
Hardware Setting.

5

Radio
Transmitter

Displays the type of radio
frequency.

* The screen contents

above differ depending

on models.

[Menu Screen]

Page 2

[Product Information

Screen]

[Menu Screen]

Page 2

[Close] Button [Close] Button

27

3. Product Information ●

3.

Touch the [Close] Button.

The display return to the Menu Screen.

4.

Touch the [Close] Button.

The display returns to the Measuring Screen.

28

4. Regulation ●

Operation

1.

Touch the Menu Button 9 on the meter.

The Menu Screen is displayed.

2.

Touch the [Next Page] Icon ( ) to display page 2 of the Menu
Screen, and touch the [Regulation] Button.

The Regulation Screen is displayed.

3.

Touch the [Close] Button.

The display return to the Menu Screen.

4.

Touch the [Close] Button.

The display returns to the Measuring Screen.

4.

Regulation

The Regulation Screen displays the symbols, approved number, regulation names, etc.
which the meter is compliance with.

* The contents on the Regulation Screen vary

depending on the destination or whether a
transmitter (sold separately) is installed.

[Menu Screen]

Page 2 [Regulation Screen]

[Menu Screen]

Page 2

[Close] Button [Close] Button

29

5. Radio Channel Frequencies ●

5.

Radio Channel Frequencies

Radio wave frequency:

Regulation Radio System Channel Number Frequency

RT-20PW
FCC & Canada IC

Standard CH1 ~ 16 344.04MHz

CH17 ~ 32 346.5 ~ 354.0MHz

ControlTL CH1 ~ 4 340.0 ~ 346.0MHz

CH5 ~ 20 341.5 ~ 351.0MHz

RT-3PW
CE & NCC

Standard CH1 ~ 16 433.62MHz

CH17 ~ 32 434.22MHz

ControlTL CH1 ~ 3 433.42 ~ 434.42MHz

Zone: Standard System: A to D (from CH 17 to CH 32)
ControlTL System: A to C (all channel)
Radio triggering range: 30 meter (100 feet)

NOTICE

The working distance of the radio triggering system can vary with the orientation and
location of the meter and receivers.

30

6. Legal Requirements ●

6.

Legal Requirements

This product complies with the following legal requirements.

Destination Standard Details

Europe

CE Wireless EN300 220-2 V2.4.1

EN301 489-1 V1.9.2
EN301 489-3 V1.6.1
EN62479:2010

North America

FCC
(US)

Wireless FCC Part15 SubpartC

IC (Canada) Wireless RSS-210 Issue9

FCC & IC compliance information:

Compliance statement to FCC and Industry Canada

FCC ID: PFK-RT20-01

This device complies with Part 15 of the FCC Rules.
Operation is subject to the following two conditions:
(1) this device may not cause harmful interference, and
(2) this device must accept any interference received, including interference that may cause

undesired operation.

The user is cautioned that unauthorized changes or modications not approved could void the

user’s authority to operate the equipment.

IC: 3916A-RT20001

Operation is subject to the following two conditions:
(1) this device may not cause interference, and
(2) this device must accept any interference, including interference that may cause undesired

operation of the device.

Le present appareil est conforme aux CNR d’Industrie Canada applicables aux appareils radio
exempts de licence. L’exploitation est autorisee aux deux conditions suivantes :
(1) l’appareil ne doit pas produire de brouillage, et
(2) l’utilisateur de l’appareil doit accepter tout brouillage radioelectrique subi, meme si le

brouillage est susceptible d’en compromettre le fonctionnement.

31

7. Troubleshooting ●

7.

Troubleshooting

If your meter is not operating properly, as you expect, please consult the following
conditions and attempt the suggested solutions before contacting Sekonic. Non­operation can be due to incorrect, mis-setting of the meter or battery condition.
Should your meter be malfunctioning, please contact place where meter was
purchased or Sekonic for service and repair.

Condition Possible reasons What to do

Flash cannot be
triggered in Radio
Triggering Flash
Mode.

Is the radio receiver in the

ash compatible with the

meter’s transmitter? Isn’t any
other non-compatible brand or
manufacturer used?

Make sure that both the meter
and plug-in external or built-in
PocketWizard receivers to the same
system.
http://www.pocketwizard.com/

Are the meter transmitter and
receivers set for the same
channel number and Zones?

Set the same channel number and
Zones on the transmitter and the
receivers.

Are the meter and receiver
set for the same radio system:
ControlTL and/or Standard?

Check that the transmitter and
receiver are both set to the same
system (either Standard system or
ControlTL system).

Are the meter transmitter
and receiver set for the same
frequency?

As there are two types of frequency
(344 MHz band and 433 MHz
band), ensure that the transmitter
and frequency have the same

specications.

7-24-14, Oizumi-Gakuen-cho, Nerima-ku Tokyo
178-8686 JAPAN
Tel [phone] Fax [phone]
http://www.sekonic.com

JX5197630

February 2017