RTS BP-325 Datasheet

BP-319, BP-325, BP-351

Belt Pack User Stations

The BP-319, BP-325, and BP-351 are portable user stations for use with RTS™ Two-Wire intercom systems. The BP-319 is
a microprocessor controlled one-channel intercom where the BP-351 is a microprocessor controlled two-channel select inter­com belt pack. The BP-325 is a binaural (stereo) programmable 2 channel belt pack with PGM-in capability. The BP-319 and
BP-351 have connections for headset/earset microphones (Dynamic or Electret), whereas the BP-325 is for use with a dynam­ic microphone only. The factory setting is for Dynamic.

Features

Call Function

Call function that allows the user to send or receive call signals to other devices on the intercom channel, including audible call
alert on the listen side.

Microphone Kill Detect

Microprocessor controlled microphone kill detect.

Powered Externally

Powered externally, via the intercom system power supply on channel one.

Headset

Headset 4 or 5-pin XLR connection is available. (The BP-325 has both standard.)

Line Drawings

BP-319 BP-325 BP-351

BP-319, BP-325, BP-351 Specifications

BP-319 and BP-351
General

Channel Supplied Power Requirements:

30 VDC nominal (standard RTS® line), 45 to 70 mA

Environmental Requirements:

Storage: -20°C to 80°C; 0% to 95% humidity, non-condensing

Operating:0°C to 50°C; 0% to 95% humidity, non-condensing
Dimensions: 5" (127 mm) high, 3.5" (88.9 mm) wide, 1.8" (45.7
mm) deep
Weight: Approximately 13 oz (364 g)

Interface Requirements

Headset/Earset:

50 to 200ø dynamic microphone

50 to 600ø headphones
RTS™ Intercom Channel:

Output Level: 0.775 Vrms (0 dBu) nominal

Input Level: 200ø ±5%

Bridging Impedance: greater than 10,000ø
Call Signalling:

Send: 20 kHz ±100 Hz, 240 mVrms ±10%

Receive: 20 kHz ±800 Hz, 100 mVrms

Mic-Off Frequency Detect: 24 kHz ±800 Hz, 100 mVrms
Noise Contribution: less than -60 db on the line

Headphone Amplifier

Voltage Gain:

18 ±3 dB from the line
Maximum Output:

60 mW into 150ø
Frequency Response:

200 Hz to 8 kHz +1/-4db nominal
Audible Alert:

1 kHz, at the headset/earset
Total Harmonic Distortion:

Less than 0.2% nominal at 50 mW from the line
Sidetone:

20 dB minimum range, adjustable

Dynamic Microphone Amplifier

Voltage Gain:

Mic to Channel; 45 ±3 dB, before limiting

Mic to Headphone; adjustable, 65 dB ±10% range into 150ø
Frequency Response:

200 Hz to 8 kHz +1/-4db nominal
Total Harmonic Distortion:

Less than 0.2% nominal at Channel output

Electret Microphone Amplifier

Voltage Gain:

Mic to Channel; 27 ±3 dB, before limiting

Mic to Headphone; adjustable, 45 dB ±10% into 150ø
Frequency Response:

200 Hz to 8 kHz +1/-4db nominal
Total Harmonic Distortion:

Less than 0.2% nominal at Channel output

Connector Pin Configurations

Intercom Channel Connector

XLR-3 M/F

Pin 1 Common

Pin 2 +30 VDC In

Pin 3 Syst Chan 2
Headset Connector

Type: XLR-4F

Pin 1 Headset Microphone low

Pin 2 Headset Microphone high

Pin 3 Headphone Common

Pin 4 Headphone Chan 1 or Chan1 and Chan 2 audio

ype: XLR-5F

T

Pin 1 Headset microphone low

Pin 2 Headset microphone high

Pin 3 Headphone low

Pin 4 Headphone high

Pin 5 No Connection

BP-325
General

Channel Supplied Power Requirements:

30 VDC nominal (standard RTS® line), 65 to 85 mA
Environmental Requirements:

Storage: -20°C to 80°C; 0% to 95% humidity, non-condensing

Operating:0°C to 50°C; 0% to 95% humidity, non-condensing
Dimensions: 5.00" (127mm) High, 3.75" (96.3mm) Wide, 2.05"
(52.1mm) Deep
Weight: 0.75 pounds (340 grams)

Contact Information

Telex® Communications, Inc.
12000 Portland Avenue South
Burnsville, MN 55337
Telephone: [phone]
Fax: [phone]

Form Number: 38110505
August, 2005

Exterior

Polystyrene and polycarbonate mix; gray textured main body

Impedance Across Intercom Line

10,000 ohms typical

Ambient Temperature Range

Operating: 0° C to 50° C
Storage: -40° C to 125° C

Noise Contribution to 200-0hm Intercom Line

-75 dBu

Headphone Amplifier

Maximum Voltage Gain: 30 dB
Frequency Response: 100 Hz to 8 kHz, +/-3 dB
Headphone impedance: 50 to 600 ohms
Output Power: 150 mW/50 ohms
Output voltage level: 8 volts peak-to-peak

Microphone Preamplifier

Maximum Voltage Gain: 54 dB
Frequency Response: 100 Hz to 8 kHz, +/-3 dB
Input Impedance: 1,000 ohms, balanced
Limiter Range: 30 dB

Program Input

Maximum input level: +20 dBu
Nominal input level: -10 to +8 dBu
Frequency response: 100 Hz to 12 kHz, +/-3 dB

Monaural Dynamic-mic Headset Connector

XLR-4-31 receptacle (J13)
Pin 1 - Microphone low
Pin 2 - Microphone high
Pin 3 - Common
Pin 4 - Headphone high

Stereo Dynamic-mic Headset Connector

XLR-5-31 receptacle (J14)
Pin 1 - Microphone low
Pin 2 - Microphone high
Pin 3 - Common
Pin 4 - Headphone left high
Pin 5 - Headphone right high

Carbon-mic Headset Connector (J1)

1/4-inch, 3-conductor Phone Jack
Used for Headset

Tip - Carbon microphone
Ring - Headphone
Sleeve - Common

Used for Mic Switch

Tip - Remote switch normal-open contact
Ring - No connection
Sleeve - Remote switch common

Intercom Line Input Connector (J11)

XLR-3-31 female receptacle
Pin 1 - Common
Pin 2 - Channel 1 intercom audio and +DC
Pin 3 - Channel 2 intercom audio

Line Loop/Aux Connector (J10)

XLR-3-32 male receptacle
Used for Loop-through:

Pin 1 - Common
Pin 2 - Channel 1 intercom audio and +DC
Pin 3 - Channel 2 intercom audio

Used for Program Input:

Pin 1 - Common
Pin 2 - Program input high
Pin 3 - Program input low

Used for Remote Mic Switch and/or External Power:

Pin 1 - Common
Pin 2 - +18 to +24 volts DC
Pin 3 - Remote switch normal-open contact

Ordering Information

BP-319 A4F

A4M headset connector. • Catalog Number:

an

• 1 channel portable metal belt pack with

90007753010
BP-319 A5F • 1 channel portable metal belt pack with

A5M headset connector. • Catalog Number:

an
90007753000
BP-325 • 2 channel binural (stereo), programmable
belt pack • Catalog Number: 9000673800
BP-351 A4F • 2 channel portable metal belt pack with
an A4M headset connector. • Catalog Number:
90007754010
BP-351 A4F • 2 channel portable metal belt pack with
an A5M headset connector. • Catalog Number:
90007754000

This specifications information is preliminary and is subject to change without notification.
Brand names mentioned are the property of their respective companies.