Signet PDA500 Operation & Instruction Manual Download Page 8

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Page 8

Doc No. DCP0000518 JH 12/7/99 rev2

SigNET Amplification & Control
Tower Road,
Glover Estate,
Washington,
Tyne & Wear, NE37 2SH
Tel: +44 (0) 191 417 4551
Fax: +44 (0) 191 417 0634

Inputs

Two - XLR. Balanced - elec-
tronically

Microphone

200 Ohms - balanced
47 K Unbalanced
Sensitivity -66 dBm to -2dBm

Line

Impedance10 K balanced;
20 K unbalanced
Sensitivity -20 dBm to + 22
dBm

Performance

Bandwidth At any output level -
20 Hz to 16 KHz - 3 dB
Distortion < 0.05% THD @ 1
KHz
Dynamic range >90 dB
Noise <-86 dB
CMRR >84 dB

Input level
control

Line: -

to +6 dB

Mic: -

to + 66 dB

Mains voltage

230 V AC ± 20%

Power
Consumption

PDA500 < 100 VA
PDA1000 < 225 VA

Dimensions

Width 482 mm
Height 44 mm PDA500
88 mm PDA1000
Length 243 mm.

Specification

PDA 1000 Output Drive current
Max peak

> 16 A

EBU PPM

> 12 A

Sine - 1KHz

> 5 A RMS

Loop coverage

> 540m

Loop impedance

0.2 to 2 ohms

PDA 500 Output Drive current
Max peak

> 10 A

EBU PPM

> 8 A

Sine - 1KHz

> 2.6 A RMS

Loop coverage

> 220m

Loop impedance

0.2 to 2 ohms

Specification

Summary of Contents for PDA500

Page 1: ...l sound quality The pre amplification stage in the PDA series incorporates an advanced signal process ing system which allows tight control to be main tained over the signal This is achieved with only minimal degradation of the signal and is unno ticeable in normal operation This is far more advanced and sophisticated system than that found in many dedicated signal processing units The processor c...

Page 2: ...EARTH symbol mark GREEN mark GREEN AND YELLOW mark Blue N mark BLACK mark BLUE mark Brown L mark RED mark BROWN mark Caution To prevent electric shock do not remove the cover Upon receipt of the amplifier shipment please inspect for any damage incurred in transit If damage is found please notify your local repre sentative and the transport company immedi ately State date nature of damage and wheth...

Page 3: ...en to the signal inside the loop It is also advisable to check the system with a field strength meter Please note that the orientation of the field strength meter may influence the reading Mains Hum Background hum can sometimes be heard when testing an installation especailly when test ing with a induction loop reciever This is not caused by the loop system and will NOT nor mally be heard by heari...

Page 4: ...ter a short delay heard again from the audience response microphone which picks up the signal amplified by the main PA system This will only occur when a loop system incorpo rating an audience response microphone is used in conjunction with a stage front of house signal feed to the line input Compand compress Compress Default pins 1 2 At a factory set level the com pression ratio will be automati ...

Page 5: ...the same level as the receiver Vertical displacement If the loop is significantly higher or lower more than one to two metres than the receiver then the peak current required will be slightly higher Peak current calculation Refer to the current width graph to estab lish the required peak current The width of the loop is shown on the x axis The peak current is shown vertically on the y axis This is...

Page 6: ...res Only use cable diameters recommened for each unit Speaker positioning If a speaker is placed near or beside a loop cable the cross over in the speaker may pick up the loop signal so try to keep speakers and loop cables as far apart as possible Normally this does not show up in use because loop and speaker have the same programme material only where the loop has a different signal to the speake...

Page 7: ... Note For a two storey building the same loop position on different floors is also 90 degrees out of phase Non rectangular rooms Layout as per a basic pattern and step back the prongs to the shape of the room Each pattern should be considered as a many pronged fork The pattern should be spaced approx 2m from nearest wall next pattern prongs of the fork should be spaced approx 2m apart and should b...

Page 8: ... any output level 20 Hz to 16 KHz 3 dB Distortion 0 05 THD 1 KHz Dynamic range 90 dB Noise 86 dB CMRR 84 dB Input level control Line ì to 6 dB Mic ì to 66 dB Mains voltage 230 V AC 20 Power Consumption PDA500 100 VA PDA1000 225 VA Dimensions Width 482 mm Height 44 mm PDA500 88 mm PDA1000 Length 243 mm Specification PDA 1000 Output Drive current Max peak 16 A EBU PPM 12 A Sine 1KHz 5 A RMS Loop cov...

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