SIEM-121T/SIEM-121R

UHF PLL Stereo In-Ear Monitoring System

JTS

 

Sound Level (dB) Maximum Duration Per Day (Hours)
90	8
92	6
95	4
97	3
100	2
102	1.5
105	1
110	0.5
115	0.25
140	Avoid exposure or injury may occur

 

Summary of Text

The UHF PLL Miniature Headworn Wireless Transmitter model HW-2 is compliant with FCC Part 74, and its operation must adhere to two conditions: no harmful interference and acceptance of any interference received. Alterations to the device may revoke user authority to operate it, with the FCC ID located inside its battery compartment.

1. Features

SIEM-121T:

1. Solution to interference and dropouts with JTS exclusive 2.4GHz REMOSET technology for easy setup.
2. Wireless coverage extends up to 300 meters with digital volume control ranging from -40 to +20dB.
3. 6 programmable groups, each with up to 24 channels, and username programmable.
4. Rugged, all-metal construction and compact design to pair with SIEM-121R body-pack receiver.

SIEM-121R:

1. Wireless stereo body-pack receiver for the SIEM-121 monitoring system offering sound shaping with stereo/mono, HF booster, and volume limiting features.
2. Adjustable volume limiter and left/right balance along with a high-contrast LCD screen for user visibility.
3. Compact design for optimal wearing experience and operates up to 6 hours using 2 AA batteries, compatible with SIEM-121T wireless transmitter.

Additional Features

1. REMOSET: Allows settings transfer from the transmitter to the receiver.
2. Volume Control and 6.3mm Stereo Phone Jack for audio management.
3. EXIT/Lock Button: Exit menu functions and lock/unlock functionality with long press.
4. Knob/Setup: For navigating and saving selections/settings in the menu.
5. RF Power Switch, Power Switch, and LCD Display for operational control.

3-1-2 Rear Panel Overview

1. AC Power Socket and Fuse: Connects to main AC power supply and includes a fuse for protection.
2. DC Power Socket: Designed for 12V/1A DC power supply.
3. Balanced Loop Out Connector CH.1: Provides balanced loop output for Channel 1.
4. Balanced Loop Out Connector CH.2: Provides balanced loop output for Channel 2.
5. Balanced XLR/$6.3mm Combo Input Left / CH.1: Combination input for Left or Channel 1, accepting balanced XLR or 6.3mm connections.
6. Balanced XLR/$6.3mm Combo Input Right / CH.2: Combination input for Right or Channel 2, accepting balanced XLR or 6.3mm connections.
7. BNC Antenna Output Socket: Connection for antenna output via BNC socket.

Connecting the SIEM-121T

Step 1: Set the Rubber Pad

To ensure stability, four self-adhesive rubber pads are included. Place them on the bottom of the transmitter.

Step 2: Attach the Antenna

The antenna features a BNC connector for easy installation. Attach the antenna to the rear of the transmitter and adjust it to an upright position.

Step 3: Connect the Main Unit

1. For AC Power: Connect the AC INPUT on the rear panel of the SIEM-121T to a power socket using the supplied AC power cord.
2. For DC Power: Ensure the adapter’s DC current and voltage align with the unit’s label. Connect the DC terminal to the “DC input” port on the unit and the AC end to a power socket.

Step 4: Connect the Audio Source (e.g., Mixer)

Use the AF input cable to connect the mixer output to the XLR / 6.3mm combo input on the rear panel of the SIEM-121T.

Note 1: Choose between the AC INPUT or DC INPUT to power the main unit.

Note 2: The unit provides two balanced XLR/ 6.3mm combo inputs, allowing for either single or stereo input. Additionally, two balanced 6.3mm loop-out connectors support multiple system applications.

Installing the SIEM-121R

Receiver Battery Installation

1. Open the battery cover by pulling down the magnetic latch on the side of the device. (See Figure 1)
2. Insert two AMS batteries into the holder, ensuring correct polarity. (See Figure 2)
3. Close the battery cover. (See Figure 3)
4. Connect the headphone plug into the 3.5mm stereo jack on the receiver to finish the installation.
5. Power on and adjust the volume using the knob.
6. Configure the transmitter settings according to the manual.

Connect with the Earphone

1. Insert the earphone into the receiver’s jack. (See Figure 1)
2. Ensure the volume is low to prevent ear injury.
3. Properly position the earphones in your ears. (See Figure 2)
4. Verify the silicone sleeves fit well, and replace if necessary for comfort and isolation. (See Figure 3)
5. Confirm that the correct channels are selected, with “R” and “L” indicating right and left channels respectively.

Operation // SIEM-121R

Parameter Setting

To adjust the parameters on the SIEM-121R, press the SET button for 2 seconds to enter the setting mode. Use subsequent presses of the SET button to navigate through different setting items in sequence. Adjust parameters using the A/V button, and press SET again to save changes and exit.

1. Group/Channel
2. Scan
3. Stereo/Mono
4. HF Boost
5. Balance
6. Limiter
7. Audio Output
8. Remoset
9. User Name
10. Key Lock
11. System Options
12. Exit

Installation Assignment

Basic Operation

Stereo

For a stereo mix setup, connect the left and right channel outputs from the mixer to the SIEM-121R. The left channel should go to the left ear, and the right channel to the right ear. Volume can be adjusted using the balance control on the SIEM-121R.

1. Connect the mixer outputs to the transmitter inputs.
2. Set SIEM-121T to Stereo mode. (Refer to section 5-1)
3. Set SIEM-121R to Stereo mode. (Refer to section 5-2)

Mix

For different mono mixes, both mixes are sent to the left and right earphones. Adjust the balance control on the SIEM-121R to make one mix louder than the other, while maintaining the overall volume level in both ears.

1. Connect the mixer outputs to the transmitter inputs.
2. Set SIEM-121T to Stereo mode. (Refer to section 5-1)
3. Set SIEM-121R to Mix/Mono mode. (Refer to section 5-2)

Mono

For a mono setup with only one mixer output, connect it to either LEFT/CH.1 or RIGHT/CH.2 transmitter input. Note that the mode settings on SIEM-121R (Stereo or Mix/Mono) will have no effect in this setup.

1. Connect the mixer output to the transmitter input.
2. Set SIEM-121T to Mix/Mono mode. (Refer to section 5-1)

PDF

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