Specifications and Main Features
Key Features:
- Six connectors are now available for input or output sources
- In the entire system, a remote muting function exists
- The compressor / limiter is integrated
- Equalizers of shelving type are low and high
- Volume control from a distance
- Four tone generator: Sounds
- Installation in the rack is provided
Key System Specifications:
- Frequency Response:
- Main output: 20Hz-20kHz +- 1db
- Preamp output: 20Hz-20kHz +- 1db
- Link output: 20Hz-20kHz +- 1db
- Total Harmonic Distortion (THD):
- Main output: <0.03% (Ref.+10 dBm.Output)
- Preamp output: <0.03% (Ref.1kHz 0.775 Vrms. Output)
- Link output: <0.03% (Ref.1kHz 100 mVrms.Output)
- Input Sensitivity:
- 1780A/1780AT (balanced, no pad) 0.3 to 100 mVrms(-68dBu to – 18dBu)
- 1780A/1780AT (balanced, with pad) 3mv rms to 1vrms(-48 dBu to+2 dBu)
- 1781A (balanced) 0.3 to 100 mVrms(-68 dBu to-18 dBu)
- 1781AT (balanced) 0.1 to 30mVrms(-78dBu to-28dBu)
- Link input (unbalanced) 100 mVrms(-18 dBu)
- Input Impedance:
- 1780A: 10kOhm
- 1780AT: 10kOhm
- 1781A: >8kOhm
- Employing 1781AT: 200 2 - 600 2
- Rated Output Level:
- Main Output (balanced, LINE position): +10 dBm
- Main Output (balanced, MIC position): -40 dBm
- Preamp Output (unbalanced): 0 dBu
- Link Outpuut (unbalanced): 100 mVrms (-18dBu)
- Signal-to-Noise Ratio:
- Main Output: >85 dB
- Preamp Output: >75 dB
- Link Output: >75 dB
- Equalization:
- Bass: +12 dB in 100 Hz
- Treble: +12 dB in 10 KHz
- Compressor/Limiter:
- Threshold: -20dB – +20dB
- Compression Ratio: 1:1 – 0:1
- Release Time: 50 msec – 5 sec
- Tone Generator:
- Tones: Buzzer, siren, single tone and repeating tone chime
- Power Requirements:
- AC Mains: 100, 120, 200, 220 or 240 VAC 50/60 Hz
- Battery: +48 VDC bipolar, maximum 0.5 amps
- Operating Temperature Range: Enabling environment to temperature upto 50°C (122°F)
- Dimensions:
- Width: 19 Inches (48.3cm)
- Height: 5.25 inches (13.3cm)
- Depth: 13 Inches (33.0cm)
- Net Weight: 15 lbs (6.8 kg)
- Finish Color: Black
- Included Accessories: Operating/ Service Instruction, Rubber Feet, System Configuration Label, International Voltage and Fuse Decals
Frequently Asked Questions
Q: What are the requirements for supplying power to the 1700C Mixer/Preamplifier?
A: The unit can operate on any voltage standard from 100 to 240 V, with the frequency of either 50 or 60 HZ, alternatively it can be powered using a +48 VDC bipolar battery.
Q: What is the maximum number of input channels that the 1700C provides support to?
A: The Mixer has a maximum capacity of six available input channels.
Q: What characteristics does the built-in compressor/limiter as such posses?
A: The operational amplifier has a feedforward structure, an adjustable compression ratio ranging from unity to zero, and a release time adjustable from 50 msec to 5 sec.
Q: Is it possible to utilize the 1700C Mixer/Preamplifier for operational usage in remote locations?
A: The device meets the precondition owing to providing remote volume control functionality and remote muting facilities.
Q: Specify the type of features equalisation facility being extended by the 1700C.
A: Provided with shelving equalizers of low and high frequency which has a maximum boost of +12 DB at 100 Hz and 10 kHz respectively.
Q: Is it possible to extend the system further so as to enable more than 6 inputs?
A: The possible available options are to link numerous 1700C mainframes so as to enhance the number of inputs available.
Q: Is the 1700C Rack Mountable?
A: The device is made rack mountable and associated hardware is provided.
Q: What are the highest possible limits for the operating temperature of the examination station that is classified as 1700C?
A: The upper thermal limit for operability is rated at 50 degrees centigrade or 122 degrees Fahrenheit.
Q: What included accessories come with the mainframe?
A: The accessories that are affixed are an Operation/service instruction manual, four pads which are made out of rubber, a label for system configuration, and decals with international voltage and fuse specifications.
User Manual
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