• オートヌルを搭載したアナログハイブリッド回路
• 入出力レベルメーター
• 高音質設計
• 自由度の高い電源供給
• 4ワイヤー入出力をトランス結合
• 2ワイヤーインターカム・パワーソースを統合
• テーブルトップ，ポータブル，ラックマウント（オプション）

General Audio

• Frequency Response: ±2.5 dB, 100 Hz to 8 kHz
• Distortion (THD+N): <0.2%, measured at 1 kHz, 4-wire input to 2-wire interface pin 2
• Signal-to-Noise Ratio: >55 dB, measured at 1 kHz, 4-wire input to 2-wire interface pin 2

2-Wire Party-Line Intercom Interface

• Type: 2-channel party-line, unbalanced (pin 1 common; pin 2 DC with channel 1 audio; pin 3 channel 2 audio)
• Compatibility: single- and dual-channel intercom systems such as from RTSR and Clear-ComR
• Impedance-Normal: >10 k ohms
• Impedance-2Wire (PL) Power Source Mode: 200 ohms
• Nominal Level: ・0 dBu
• "Mic Kill" Signal: square wave, 24 kHz, ±1%
• 2-Wire Power Source: 30 Vdc nominal, 300 mA maximum

Hybrids

• 2
• Topology: 3-section analog circuitry compensates for resistive, inductive, and capacitive 2-wire party-line loads
• Nulling Method: automatic upon user initiation, processor implements digital control of analog circuitry; settings stored in non-volatile memory
• Nulling Line Impedance Range: 120 to 350 ohms
• Nulling Cable Length Range: 0 to 3500 feet
• Trans-Hybrid Loss: >40 dB, typical at 800 Hz

4-Wire Inputs

• 2
• Type: transformer-coupled, capacitor isolated
• Impedance: 13 k ohms
• Nominal Level: +4 dBu
• Maximum Level: +22 dBu

4-Wire Outputs

• 2
• Type: transformer-coupled, capacitor isolated
• Impedance: 50 ohms nominal
• Nominal Level: +4 dBu
• Maximum Level: +20 dBu into 2 k ohms

Meters

• 4
• Function: displays level of 4-wire inputs and outputs
• Type: 5-segment LED, modified VU ballistics

Connectors

• 4-Wire Line Inputs: 3-pin female XLR
• 4-Wire Line Outputs: 3-pin male XLR
• 2-Wire (PL) Interface: 3-pin male and female XLR
• External 24 Vdc Input: coaxial power jack, 2.1 x 5.5 mm, locking bushing, compatible with SwitchcraftR S760K plug

Power Requirements

• External: 24 Vdc nominal, acceptable range 20 to 28, maximum required current 750 mA @ 20 V. Universal mains input/24 Vdc power supply shipped with each unit.
• 2-Wire Party-Line (when serving as source): 24 to 32 Vdc, 175 mA

Dimensions ・Portable "Throw-Down" Version (Overall)

• 8.7 inches wide (22.1 cm)
• 1.72 inches high (4.4 cm)
• 8.3 inches deep (21.1 cm)

Mounting

• single-unit (M45ARM-1), dual-unit (M45ARM-2), or "1/2-rack" (M45ARM-3) rack-mount front panels; single-unit and dual-unit panels use one space (1U) in a standard 19-inch rack, "1/2-rack" panel uses one space (1U) in a special 10.5-inch rack

Weight

• 1.8 pounds (0.82 kg), rack-mount front panel adds 0.2 pounds (0.09 kg)

M45ARM-1

1台のModel 45Aを1Uラックにマウントするためのパネル

M45ARM-2

2台のModel 45Aを1Uラックにマウントするためのパネル

M45ARM-3

1台のModel 45Aをハーフラックにマウントするためのパネル

PS-DC-03

パワーサプライ(DC24V，0.75A) ※製品には1つ付属されております。