Samson Airline 77 User manual

UHF WIRELESS SYSTEM

• AL1 Presentation Transmitter

• AX1 Handheld Transmitter

• CR77 Receiver

OWNERS MANUAL

PRESENTATION

TRANSMITTER

HANDHELD TRANSMITTER

ENGLISH

Introduction 3

QuickStart 4

Guided Tour - CR77 Receiver 6

Guided Tour - UM1 Receiver 9

Guided Tour - AX1 Handheld Transmitter 12

Guided Tour - AL1 Presentation Transmitter 14

Setting Up and Using Your AirLine System 17

Specifications 75

Appendix A: Channel Plan 77

Appendix B: Attaching The Lanyard to the AL1 78

FRANCAIS

Introduction 21

Prise en main 22

Visite guidée – Récepteur CR77 24

Visite guidée – Récepteur UM1 27

Visite guidée – Emetteur main AX1 30

Visite guidée – Emetteur de presentation AL1 32

Configuration et utilisation des systèmes AirLine 35

Spécifications 75

Appendix A: Tableau de conversion de fréquence 77

Appendix B: Attaching The Lanyard to the AL1 78

Samson Technologies Corp.

45 Gilpin Avenue

Hauppauge, New York 11788-8816

Phone: 1-800-3-SAMSON (1-800-372-6766)

Fax: 631-784-2201

Table of Contents

DEUTSCHE

Einleitung 39

Schneller Einstieg 40

Übersicht - Empfänger CR77 42

Übersicht - Empfänger UM1 45

Übersicht - Hand-Sender AX1 48

Übersicht - Presentation-Sender AL1 50

Konfiguration und Betrieb der AirLine-Systeme 53

Technische Daten 75

Anhang A: Frequenzzuordnung der Empfangskanäle 77

Anhang B: Attaching The Lanyard to the AL1 78

ESPANOL

Introducción 57

Arranque rápido 58

Recorrido guiado – Receptor CR77 60

Recorrido guiado – Receptor UM1 63

Recorrido guiado – Transmisor manual AX1 66

Recorrido guiado – Transmisor de presentation AL1 68

Ajuste y uso de su sistema AirLine 71

Especificaciones 75

Apéndice A: Tabla de conversión de frecuencias 77

Apéndice B: Attaching The Lanyard to the AL1 78

Welcome to Samson AirLine—the wireless system for the new millenium! Wireless microphone and instrument systems were originally

developed to eliminate cables, providing unparalleled freedom of movement. AirLine takes this concept to a new level with transmitters

so small, lightweight and aerodynamic, they are nearly invisible, providing a completely “hassle-free” user experience. To create the world’s

smallest wireless transmitters, we developed new proprietary technology. Featuring miniaturized circuitry and the ability to operate on

a single tiny AAA battery (with 14 hours typical battery life), these transmitters also feature significantly improved wireless reception and

sound quality.

There are two different Samson AirLine systems detailed in this manual. Both operate in the 801 - 805 MHz UHF frequency range and each

contains a CR77 receiver or a UM1 micro diversity receiver (optimized for the production of professional audio tracks to accompany your

video shoot or live broadcast). The AirLine UHF Microphone System contains an AX1 hand-held transmitter, which plugs into any standard

wired dynamic microphone. The AirLine UHF Presentation System contains an AL1 presentation transmitter, which contains a built-in elec-

tret condenser microphone and connection for an optional lavalier microphone.

In this manual, you’ll find a more detailed description of the features of all AirLine systems, as well as a guided tour through all components,

step-by-step instructions for setting up your system and full specifications. If your AirLine system was purchased in the United States, you’ll

also find a warranty card enclosed—don’t forget to fill it out and mail it! This will enable you to receive online technical support and will

allow us to send you updated information about this and other Samson products in the future. If your AirLine system was purchased out-

side of the U. S., contact your local distributor for warranty details. Also, be sure to check out our website (http://www.samsontech.com) for

complete information about our full product line.

SPECIAL NOTE for U.S. purchasers: Should your AirLine system ever require servicing, a Return Authorization number (RA) is necessary.

Without this number, the unit will not be accepted. If your AirLine system was purchased in the United States, please call Samson at 1-800-

372-6766 for a Return Authorization number prior to shipping your system. If possible, return the unit in its original carton and packing

materials. If your AirLine system was purchased outside of the U. S., contact your local distributor for information.

Samson AirLine

Introduction

ENGLISH

If you’ve had some prior experience using wireless systems, these QuickStart instructions will get you up and running with your AirLine sys-

tem in a matter of minutes! Detailed instructions for setting up and using your AirLine system can be found on page 17 of this manual, and

the “Guided Tour” sections on pages 6 - 16 provide full descriptions of all AirLine component controls and displays.

1. Make sure that the supplied receiver and AX1 or AL1 transmitter are factory preset to the same channel.

2. Physically place the receiver where it will be used and extend its antenna(s) vertically.

3. Set the power switch to your transmitter to the “off” position (away from the arrow) and place a fresh battery in it. Then turn the trans-

mitter back on momentarily; its LED will flash once and then go off if the battery is sufficiently strong. Once battery strength is verified, turn

the transmitter off.

4. If you are using an AX1, plug its XLR connector into a wired dynamic microphone; make a good tight connection, using the supplied

rubber gasket if necessary. If you are using the AL1 with an external lavalier microphone, make the physical connection between its input

connector and the microphone.

5. Turn your audio system off and make the physical cable connection between the receiver’s balanced or unbalanced output jack (if nec-

essary, both can be used simultaneously) and a mic level audio input of your amplifier or mixer. If your system contains a CR77 or UM1

receiver, be sure to set its Audio Output Level switch correctly.

6. Turn the Volume, Level or AF Level knob on the receiver completely counterclockwise. Connect the supplied AC adapter to the receiver

and plug it in (or place a fresh battery in the UM1 receiver), but leave its power off for the moment.

7. Turn on the receiver. If your system contains a CR77 receiver, its “Power” LED will light steadily red. (Note: the UM1 receiver has no such

LED.)

Samson AirLine QuickStart

ENGLISH

8. Turn on your transmitter. If your system contains either a CR77 or UM1 receiver, one of the “A/B Receiver” LEDs will be lit, showing you

whether the (left) “A”or (right)“B” receiver is currently being used. The CR77 / UM1 meter will also indicate the strength of the incoming

RF signal.

9. Turn on your connected amplifier and/or mixer but keep its volume all the way down. If your system contains an AL1 transmitter, make

sure it is unmuted. Set the Volume, Level or AF Level knob on the receiver fully clockwise; this is unity gain.

10. Speak or sing into your mic at a normal performance level while slowly raising the audio input control of your amplifier or mixer until

the desired level is reached. If necessary, use the supplied plastic screwdriver to adjust the transmitter’s Gain trimpot in order to increase or

decrease its signal level. If you are using an AL1 transmitter with the built-in microphone, correct placement is critical to sound quality. It

should be unobstructed by clothing and either clipped to a shirt pocket or lapel, or worn around the neck on the supplied lanyard.

11. Do a walkaround through the intended area of coverage while observing the receiver’s “Power/RF” LED or RF Meter; it should indicate

sufficient RF reception in all areas of coverage . Reposition it (or its antenna) as necessary. If extended range coverage is required, a Samson

CR77 or UM1 true diversity receiver (set to the same channel as the transmitter) should be used

12. If you hear any spurious noise from the receiver output when the transmitter is turned off, use the supplied plastic screwdriver to adjust

the receiver Squelch level control, slowly turning it clockwise to the point at which the noise disappears.

Samson AirLine

QuickStart

ENGLISH

1: Antennas (A and B) - The anten-

na mountings allow full rotation

for optimum placement. In normal

operation, both Antenna A (the

antenna on the left) and Antenna

B (the antenna on the right) should

be placed in a vertical position.

Both antennas can be folded inward

for convenience when transporting

the CR77. See the “Setting Up and

Using the AirLine System”section on

page 17 in this manual for informa-

tion about antenna installation and

positioning.

2: Volume control - This knob sets the level of the audio signal being output through both the balanced and unbalanced output jacks on

the rear panel (see #2 and #4 on page 8 in this manual). Reference level is obtained when the knob is turned fully clockwise (to its“10” set-

ting).

3: Audio Meter - - This “ladder” display (similar to the VU bar meter used on audio devices) indicates the strength of the incoming audio

signal. When the “0” segment is lit, the incoming signal is optimized at unity gain; when the “+6” segment is lit, the signal is overloading.

When only the left-most “-20” segment is lit, the incoming signal is at just 10% of optimum strength. If no segments are lit, little or no signal

is being received. See the “Setting Up and the AirLine System” section on page 16 in this manual for more information.

Samson AirLine Guided Tour - CR77 Receiver / Front Panel

ENGLISH

ANT. A ANT. B

VOLUME

POWER

RF METERAUDIO METER dB

0 10 25 50 75 1000 +3 +6-5-10-20

ANT. A ANT. B

SQUELCH

MIN

CR77 UHF TRUE DIVERSITY RECEIVER

MAX

4: Squelch control - This control determines the maximum range of the CR77 before audio signal dropout. Although it can be adjusted

using the supplied plastic screwdriver, it should normally be left at its factory setting. See the “Setting Up and Using the AirLine System”

section on page 17 in this manual for more information.

5: A/B Receiver LEDs - When signal is being received, one of these will be lit green, showing you whether the (left)“A”or (right)“B” receiver

is currently being used. The CR77 constantly scans its two antennas and automatically selects whichever is receiving the strongest, clearest

signal. This True Diversity switching is completely inaudible, but it effectively increases overall range while virtually eliminating potential

interference and phase cancellation problems.

6: RF (Radio Frequency) Level meter - This “ladder” display (similar to the VU bar meter used on audio devices) indicates the strength of

the incoming radio signal. When the“100%” segment is lit, the incoming RF signal is fully modulated and at optimum strength. When only

the second most left-most “10%” segment is lit, the incoming signal is at just 10% of optimum strength. If no segments are lit, little or no

signal is being received. See the “Setting Up and Using the AirLine System” section on page 17 in this manual for more information.

8: Power switch - Use this to turn the CR77 power on and off. When the receiver is on, the internal Power LED is lit.

Samson AirLine

Guided Tour - CR77 Receiver / Front Panel

ENGLISH

1: DC input - Connect the supplied 12

volt 160 mA power adapter here, using

the strain relief as shown in the illustra-

tion below. WARNING: Do not substi-

tute any other kind of power adapter;

doing so can cause severe damage to

the CR77 and will void your warranty.

2: Unbalanced output* - Use this

unbalanced high impedance (5K Ohm)

1/4" jack when connecting the CR77

to consumer (-10) audio equipment.

Wiring is as follows: tip hot, sleeve

ground.

3: Audio Output Level switch - Sets

the audio output level attenuation of

the balanced output (see #4 below) to

-20 dBm (line level) or -40 dBm (mic

level). See “Setting Up and Using the

AirLine System” on page 17.

4: Balanced output* - Use this elec-

tronically balanced low impedance (600 Ohm) XLR jack when connecting the CR77 to professional (+4) audio equipment. Pin wiring is as

follows: Pin 1 ground, Pin 2 high (hot), and Pin 3 low (cold).

* If required, both the unbalanced and balanced outputs can be used simultaneously.

Samson AirLine Guided Tour - CR77 Receiver / Rear Panel

ENGLISH

1234

Using the strain relief: Gather up a loop of wire and pass it through the strain relief,

then pass the adapter plug through the loop in order to create a knot.

1: A/B Receiver LEDs - When signal is being received, one of these will be lit orange,

showing you whether the (left)“A” or (right) “B” receiver is currently being used. The

UM1 constantly scans its two antennas and automatically selects whichever is receiving

the strongest, clearest signal. This True Diversity switching is completely inaudible, but

it effectively increases overall range while virtually eliminating potential interference

and phase cancellation problems.

2: Meter - This set of three multicolor LEDs acts as a meter, indicating either battery

power or the strength of the incoming RF signal. This meter can also be disabled alto-

gether to conserve battery power. See #15 on page 11 for more information.

3: Peak LED - This LED lights red when output signal from the UM1 is at the onset of

clipping (that is, when it is on the verge of being distorted). If you see this light during

operation, move the microphone further away or lower the output level of your instru-

ment or transmitter. For more information, see the section entitled “Setting Up and

Using the AirLine System”on page 17 in this manual.

4: Power switch - Use this to turn the UM1 power on and off.

5: SQ (Squelch) Level control - This control determines the maximum range of the

UM1 before audio signal dropout. Although it can be adjusted using the supplied

plastic screwdriver, it should normally be left at its factory setting. See the “Setting Up

and Using the AirLine System”section on page 17 in this manual for more information.

Samson AirLine

Guided Tour - UM1 Receiver

MAX

MIN

POWER ON

SQ LEVEL

UHF MICRO DIVERSITY RECEIVER

LOW MID HIGH PEAK

800

MHz

2 3 1

ENGLISH

6: Battery holder - Insert a standard 9-volt alkaline battery here, being sure to

observe the plus and minus polarity markings shown. We recommend the Duracell

MN 1604 type battery. Although rechargeable Ni-Cad batteries can be used, they do

not supply adequate current for more than four hours.

WARNING: Do not insert the battery backwards; doing so can cause severe damage

to the UM1 and will void your warranty.

7: Plastic screwdriver - Specially designed for use in adjusting the UM1 Squelch

Level control (see #4 on the previous page). See the “Setting Up and Using the

AirLine System” section on page 17 in this manual for more information.

8: Antennas (A and B) - The antenna mountings allow full rotation for optimum placement. In normal operation, both antennas should

be placed in a vertical position. Both antennas can be folded inward for convenience when transporting the UM1. See the “Setting Up and

Using the AirLine” section on page 17 in this manual for more information.

9: DC input - This jack will accept a DC input voltage of 6 - 13 volts (inner connection [tip] positive, outer connection [sleeve] ground) from

your video camera, if available. Connect an optional Samson AC300R adapter here to charge a rechargeable 9-volt Ni-Cad battery.

10: Unbalanced output* - Use this unbalanced (1K Ohm max.) 1/8" (3.5 mm) mini-phone jack when connecting the UM1 to consumer (-10)

audio equipment. Wiring is as follows: tip hot, sleeve ground. If your video camera has stereo audio inputs, you’ll need to use a Y-adapter

that has a 1/8" (3.5 mm) mini-phone plug at one end and dual male RCA-type plugs at the other end.

11: Audio Output Level switch - Sets the audio output level of both the balanced and unbalanced outputs (see #10 above and #14 on the

following page) to -30 dBm (mic level), -20 dBm, or -10 dBm (line level). See the “Setting Up and Using the AirLine System” section on page

17 in this manual for more information.

Samson AirLine Guided Tour - UM1 Receiver

30 20 10

LEVELOUT UNBAL

DC INPUT

109 118

ENGLISH

12: Level control - This knob sets the level of the audio signal being sent to the

headphones output (see #13 below).

13: Headphones output - Connect a stereo headphone to this standard 1/8" (3.5

mm) mini-phone jack in order to monitor the signal being output by the UM1. We

recommend the use of 30 ohm headphones. The level of the headphone signal can

be set by adjusting the Level control (see #12 above). Maximum output is 240 mW @

30 ohms).

14: Balanced output* - Use this electronically balanced low impedance (600 Ohm) mini-XLR jack when connecting the UM1 to professional

(+4) audio equipment. Pin wiring is as follows: Pin 1 ground, Pin 2 high (hot), and Pin 3 low (cold).

15: Meter switch - This three-position switch determines the function of the front-panel UM1 meter (see page #2 on page 9). In the left “RF”

position, the meter indicates the strength of the incoming RF signal. In the center “BATTERY” position, the meter indicates relative battery

power, showing whether the installed battery is at low (red), mid (yellow) or high (green) strength. (Note: When the red “low” indicator lights,

performance is degraded and the battery needs to be replaced). In the right “OFF” position, the meter is disabled altogether, thus conserv-

ing battery power.

* If required, both the unbalanced and balanced outputs can be used simultaneously.

Samson AirLine

Guided Tour - UM1 Receiver

PHONES LEVEL

METER

RF OFF

BATT.

ENGLISH

1: XLR connector - Connect this standard female XLR connector

into any standard wired dynamic microphone in order to make it a

wireless mic.

2: Rubber gasket - If necessary, use this provided rubber gasket in

order to make a solid connection between the AX1 XLR connec-

tor and your microphone (note that not all microphones require its

use).

3: Power on-off switch - Move this switch in the direction of the

arrow to turn power to the AX1 on; move it away from the arrow

to turn power off. (to conserve battery power, be sure to turn the

AX1 off when not in use). Be sure to

mute the audio signal at your exter-

nal mixer or amplifier before turn-

ing the AX1 power on or off, or an

audible pop may result.

4: Power / Battery LED - This

LED flashes once when the AX1 is

first turned on and lights steadily red

when there is less than 2 hours of

battery power remaining, indicating

that the battery needs to be changed.

Samson AirLine Guided Tour - AX1 Handheld Transmitter

ENGLISH

5: Battery compartment - Insert a standard AAA alkaline battery here, being

sure to observe the plus and minus polarity markings shown. We recommend

the Duracell type battery. Although rechargeable Ni-Cad batteries can be used,

they do not supply adequate current for more than four hours. WARNING: Do

not insert the battery backwards; doing so can cause severe damage to the AX1

and will void your warranty.

6: Microphone Input Level control (trimpot) - Use the supplied plastic screw-

driver to raise or lower the input level sensitivity of the AX1 as required. See the

“Setting Up and Using Your AirLine System” section on page 17 in this manual for

more information.

Samson AirLine

Guided Tour - AX1 Handheld Transmitter

ENGLISH

AF LEVEL

MIN

MAX

1: Power / Battery LED - This LED flashes once when the AL1 is first turned on and lights

steadily red when there is less than 2 hours of battery power remaining, indicating that the bat-

tery needs to be changed.

2: Antenna - This permanently attached flexible antenna should be fully extended during nor-

mal operations. See the “Setting Up and Using Your AirLine System”section on page 17 in this

manual for more information about antenna positioning.

3: Electret condenser microphone - This high- quality unidirectional electret condenser

microphone with metal windscreen is optimized for clear, crisp reproduction of speech. It is

active whenever the AL1 is powered on, as long as there is no connection made to the lavalier

microphone input connector (see #4 below). When a plug is inserted into the lavalier micro-

phone input connector, this built-in microphone is muted.

4: Lavalier microphone input connector - Use this

standard 2.5 mm mini-jack if you want to connect an

external lavalier microphone to the AL1. Note that,

because the AL1 has a built-in electret condenser

microphone (see #3 above), the use of an external

lavalier mic is optional and not required. The AL1 pro-

vides 2.7V of phantom power, so condenser mics can

be used if desired.

Samson AirLine Guided Tour - AL1 Presentation Transmitter

ENGLISH

5: Gain control (trimpot) - Use the supplied plastic screwdriver to raise or lower the input level sensitivity of the AL1 as required. See the

“Setting Up and Using Your AirLine System” section on page 17 in this manual for more information.

6: Mute switch - Move this switch in the direction of the arrow to mute the AL1; move it away from the arrow to unmute it and transmit

audio signal. Because the carrier signal remains during muting, no “pop” or “thud”will be heard. Note that turning this off does not turn

off the transmitter power—it is simply a way to temporarily mute the transmission of audio signal. If you don’t plan on using the AL1 for

extended periods, turn it off power by using the power on-off switch (see #7 below). Be sure to mute the audio signal at your external mixer

or amplifier before turning the AL1 power on or off, or an audible pop may result.

7: Power switch - Move this switch in the direction of the arrow to turn power to the AL1 on; move it away from the arrow to turn power

off. (to conserve battery power, be sure to turn the AL1 off when not in use).

Samson AirLine

Guided Tour - AL1 Presentation Transmitter

GAIN

ENGLISH

8: Battery compartment - Insert a standard AAA alkaline battery here, being sure to observe the plus and minus polarity markings shown.

We recommend the Duracell type battery. Although rechargeable Ni-Cad batteries can be used, they do not supply adequate current for

more than four hours. WARNING: Do not insert the battery backwards; doing so can cause severe damage to the AL1 and will void your

warranty.

9: Clip connector - This clip can be used to fasten the AL1 to a lapel or shirt pocket or to the supplied lanyard. The position of the clip

can be rotated to the desired position after loosening its center screw or can be removed entirely by removing the center screw. For more

information on positioning the AL1, see the “Setting Up and Using the AirLine System” section on page 17 and Appendix B on page 78 in

this manual.

Samson AirLine Guided Tour - AL1 Presentation Transmitter

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Samson AirLine

The basic procedure for setting up and using your AirLine System takes only a few minutes:

1. For your AirLine system to work correctly, both the receiver and transmitter must be set to the same channel. Remove all packing materi-

als (save them in case of need for future service) and check to make sure that the supplied receiver and transmitter are set to the same chan-

nel (a complete channel plan is printed on the inside back cover of this manual). If these channels do not match, contact your distributor or,

if purchased in the United States, Samson Technical Support at 1-800-372-6766.

2. Physically place the receiver where it will be used (the general rule of thumb is to maintain “line of sight” between the receiver and trans-

mitter so that the person using or wearing the transmitter can see the receiver). The CR77 can be rack-mounted if desired (taking a half-rack

space), using an optional Samson adapter kit. The UM1 can be mounted to a video camera using the supplied velcro.

3. Extend the receiver antenna(s) and place it (them) in a vertical position. Make sure the Power on-off switch in your transmitter is set to

“O ff.”

4a. If your system contains an AX1 handheld transmitter, unscrew the bottom section by turning it counterclockwise and then slide it off.

4b. If your system contains an AL1 body pack transmitter, turn it over and slide off the battery door.

5. Place a fresh AAA alkaline battery in the transmitter battery compartment, taking care to observe the polarity markings. If you are using

an AX1 transmitter, replace the bottom section by sliding it on and then screwing it back on. If you are using an AL1 transmitter, replace the

battery door by sliding it in until it clicks. Whichever transmitter you are using, leave it off for the moment.

6. Make the physical cable connection between the receiver output jack and a mic level audio input of your amplifier or mixer. The bal-

anced XLR jack is preferable, since it will deliver an electromagnetically cleaner signal. If required, both the balanced and unbalanced out-

puts can be used simultaneously. If your system contains a CR77 or UM1 receiver, be sure to set its Audio Output Level switch correctly (see

pages 8 and 10 for details). Leave your amplifier (and/or mixer) off at this time.

7. Turn the Volume, Level or AF Level knob on the receiver completely counterclockwise. Connect the supplied AC adapter to the CR77

receiver and plug it in (the UM1 receiver can also operate off battery power or a 12 volt power supply from a connected video camera), then

plug the adapter into any standard AC outlet. Slide the Power switch in the direction of the arrow to turn on the receiver. If ysystem con-

tains a CR77 receiver, its “Power”LED will light steadily red. (Note: The UM1 receiver has no “Power” LED indicator.)

Setting Up and Using Your AirLine System

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Samson AirLine

8. Turn on the power to your transmitter (using its Power on-off switch); the “Power/Battery”LED will flash if the battery is sufficiently strong

(if it lights steadily, the battery has less than 2 hours of power remaining and should be replaced). If your system contains either a CR77 or

UM1 receiver, one of the “A/B Receiver” LEDs will light, showing you whether the (left)“A” or (right) “B” receiver is currently being used. The

CR77 / UM1 meter will also indicate the strength of the incoming RF signal.

9. Now it’s time to set the audio levels. Turn on your connected amplifier and/or mixer but keep its volume all the way down. If you are

using an AL1 transmitter, make sure that it is unmuted (its Mute switch should be positioned away from the arrrow). Then set the Volume,

Level or AF Level knob on the receiver fully clockwise; this is unity gain. If you are using an AL1 transmitter with the built-in microphone,

note that correct placement is critical to sound quality. We recommend that you place it as shown in the illustrations on this page— unob-

structed by clothing and either clipped to a shirt pocket or lapel, or worn around the neck on the supplied lanyard.

Setting Up and Using Your AirLine System

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Samson AirLine

10. Speak or sing into your mic at a normal performance level while slowly raising the volume of your amplifier and/or mixer until the

desired level is reached. The UM1 receiver allows you to monitor the transmission signal using standard Walkman-type 30 ohm headphones

connected to its headphone jack. Note that Unidirectional microphones (mics which pick up signal from just one direction) such as the

built-in AL1 electret condenser are less prone to feedback than other types of mics. Any feedback problems you encounter can be mini-

mized by being sure not to use the microphone directly in front of a PA speaker or by using an equalizer to attenuate (reduce) those high-

or mid-range frequencies which are causing the feedback “squealing”.

11. If you hear distortion at the desired volume level, first check to see whether the“Peak” LED on the receiver is lit. If it is not lit, make sure

that the gain structure of your audio system is correctly set (consult the owners manual of your mixer and/or amplifier for details). If the red

“Peak” LED is lit, do the following:

• IfyouareusinganAX1transmitter,usethesuppliedplasticscrewdrivertoturnitsMicrophoneInputLevelcontrol(trimpot)slowly

counterclockwise (towards the “Min” position) until the distortion disappears.

• IfyouareusinganAL1transmitterwithitsinternalelectretcondensermicrophone,simplymovethemicrophonefurtherfromyour

mouth. If you are using an AL1 with an external lavalier microphone, use the supplied plastic screwdriver to turn the Gain control

(trimpot) slowly counterclockwise until the distortion disappears.

12. Conversely, if you hear a weak, noisy signal at the desired volume level, again make sure that the gain structure of your audio system is

correctly set (consult the owners manual of your mixer and/or amplifier for details) and that the Volume control of the receiver is fully clock-

wise. If it is lit and the signal coming from the receiver is still weak and/or noisy, do the following:

• IfyouareusinganAX1transmitter,usethesuppliedplasticscrewdrivertoturnitsMicrophoneInputLevelcontrol(trimpot)slowly

clockwise (towards the “Max” position) until the signal reaches an acceptable level.

• IfyouareusinganAL1transmitterwithitsinternalelectretcondensermicrophone,simplypositionthemicrophoneclosertoyour

mouth. If you are using an AL1 with an external lavalier microphone, use the supplied plastic screwdriver to turn the Gain control

(trimpot) slowly clockwise until the signal reaches an acceptable level.

Setting Up and Using Your AirLine System

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Samson AirLine

13. Temporarily turn down the level of your mixer/amplifier system and turn off the power to your transmitter, leaving the receiver on. Then

restore the previously set level of your mixer/amplifier. With the transmitter off, the receiver output should be totally silent—if it is, skip

ahead to the next step. If it isn’t (that is, if you hear some noise), you may need to adjust the receiver Squelch control. When the Squelch

control is at its minimum setting, the AirLine system always provides maximum range without dropout; however, depending upon the

particular environment your system is used in, you may need to reduce that range somewhat in order to eliminate band noise when the

transmitter is turned off. To do so, use the provided screwdriver to rotate the Squelch control completely counterclockwise (to the “Min”

position), then slowly turn it clockwise until the noise disappears. If no noise is present at any position, leave it at its fully counterclockwise

“Min”position (so as to have the greatest overall range available).

14. When first setting up your AirLine System in a new environment, it’s always a good idea to do a walkaround in order to make sure that

coverage is provided for your entire performance area. Accordingly, turn down the level of your audio system and turn on both the trans-

mitter and receiver. Then, with the transmitter unmuted, restore the level of your audio system and while speaking or singing, walk through

the entire area that will need to be covered. As you do so, observe the RF display or meter on the receiver to make sure that it is receiving

sufficiently strong RF signal ( in the CR77 and UM1 receivers, all segments of the RF Level meter should be lit). Always try to minimize the

distance between transmitter and receiver as much as possible so that the strongest possible signal is received from all planned transmis-

sion points. In certain environments, it may be desirable to angle the receiver antenna(s) differently from the vertical position. Where

extended range coverage is required, the Samson CR77 true diversity receiver (set to the same channel as the transmitter) should be used.

For videography applications, the Samson UM1 micro diversity receiver should be used.

If you have followed all the steps above and are experiencing difficulties, contact your local distributor or, if purchased in the United States,

call Samson Technical Support (1-800-372-6766) between 9 AM and 5 PM EST.

Setting Up and Using Your AirLine System

ENGLISH

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