Shure PSM 900 Specifications download pdf (Page 10)

MixMode

Some performers need to hear more of their own voice or instrument, while

others want to hear more of the band. With MixMode, the performer creates

theirownmixusingthebalancecontrol(▼▲buttons)onthebodypack.

To use MixMode, send a solo mix of the performer to the CH. 1 IN input on

the transmitter, and send a band mix to the CH. 2 IN input.

Set the performer’s bodypack for MixMode. The bodypack combines the two

signals and sends them to both earphones, while the balance control on the

bodypack adjusts the relative levels for each.

Frequency Scan

The scan feature analyzes the RF environment for interference to identify

available frequencies. The PSM900 has two frequency scan modes:

• Channel Scan Press the scan button on the bodypack. Finds the first

available channel.

• Group Scan Press and hold the scan button for two seconds. Finds

the group with the greatest number of available channels. (Each group

contains a set of frequencies that are compatible when operating multiple

systems in the same environment.)

Sync

The PSM900 transfers settings in either direction: from the bodypack to the

rack unit, or from the rack unit to the bodypack.

• Sending settings to the bodypack: Align the IR windows and press the

sync button on the rack unit. The blue LED on the bodypack flashes.

• Downloading settings from the bodypack: First press the scan button

on the bodypack. Then align the IR windows and press the sync button

on the rack unit while the bodypack display is flashing “SYNC NOW...”.

The level LEDs flash on the rack unit.

LOOP Applications

Use LOOP OUT L (left) and R (right) outputs to send a copy of the audio

signal going into the transmitter to other devices. Following are a few of the

many applications for these outputs.

Stereo for Multiple Systems

Send one stereo signal from the mixing console to the inputs on the first

transmitter, then connect the LOOP outputs to the inputs on the next trans-

mitter. Repeat for all transmitters to form a chain.

Floor Monitors

Send the audio from the LOOP outputs to onstage loudspeakers. The

bodypack and the onstage monitors receive the same audio signals.

Recording Devices

To record a performance, connect the LOOP outputs to the inputs of a re-

cording device.

Squelch

Squelch mutes audio output from the bodypack when the RF signal be-

come noisy. While squelch is activated, the blue LED on the bodypack

turns off.

For most installations, squelch does not need adjustment, and it keeps the

performer from hearing hiss or noise bursts if the RF signal becomes com-

promised. However, in congested RF environments or in close proximity to

sources of RF interference (such as large LED video panels), the squelch

may need to be lowered to prevent excessive audio dropouts. With lower

squelch settings, the performer may hear more noise or hiss, but will experi-

ence fewer audio dropouts.

Squelch Settings

HIGH (NORMAL)

Default factory setting.

MID

Moderately decreases the signal-to-noise ratio

required to squelch the receiver.

LOW

Greatly decreases the noise squelch threshold.

PILOT ONLY

Turns off noise squelch leaving only pilot

squelch on.

Symbol appears in display window

NO SQUELCH

Turns off noise and pilot tone squelch. (Sometimes

used as a debugging tool by monitor engineers or

RF coordinators to “listen” to the RF environment.)

Symbol appears in display window

Note: Before lowering squelch, first try to eliminate the problem by find-

ing the best set of frequencies for your installation and removing potential

sources of interference.

Caution: Turning off or lowering the squelch setting can increase the noise

level and cause discomfort to the performer:

•Donotlowerthesquelchsettingunlessabsolutelynecessary.

•Turnearphonevolumetothelowestsettingbeforeadjustingsquelch.

•Donotchangethesquelchsettingduringaperformance.

•Turnupthetransmittersettingtomakenoiseorhisslessnoticeable.

Note: The input level control and the input pad do not affect the LOOP

OUT signals.

Point-to-Point Wireless Audio

When a cable cannot be used, a UR4 receiver and a P9T transmitter can

be used for point-to-point (PTP) wireless audio.

level L R menu sync volume power

CLIP

sync

RF Audio

A B

XX YYY-ZZZ MHz Navigate

ENTER

EXIT

OFF

push

Control

POWER

Monitor

Monitor Clip

push

UR4S

Wireless Receiver

with Audio Reference Conpanding

For more information on PTP, please visit:

www.shure.com/americas/products/personal-monitor-systems/psm900

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Shure PSM 900 Specifications Page 10

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