At3 – Plug Prong Amplifier

Transcript

AT3 – Plug Prong Amplifier The AT3 is a telephone amplifier for phone systems requiring a PJ 327 Plug Prong interface. It is a unique product that offers a field replaceable headset cord and a 90° bend to minimize space and position the controls for easy access. Additional product features include full range volume control, voice switching to further reduce background noise when the agent is not speaking, GN Netcom’s FailSafe™ Compression to ensure constant speaker output, as well as our patent pending circuit that precisely intercepts acoustic spikes. AT3 Plug Prong Amplifier
Mute and no mute version
Mute LED to indicate when the mute mode is activated
Full range volume control enables users to set comfort level
Voice switching to eliminate background noise when user is not speaking
FailSafe™ Compression to provide a constant output level with varying Pair your AT3 with a GN Netcom headset input signals; boost the weak and reduce the strong
to experience superior A patent pending circuit that prevents clipping and distortion as well as safe guards the user against acoustic spikes clarity, comfort and
Field replaceable headset cord durability.
Unique 90˚ bendable housing to minimize space usage Sound Quality ) Comfort ) Durability www.gnnetcom.com AT3 – Plug Prong Amplifier AT3 and AT3M Specifications • Accommodates all GN Netcom brand headsets • Mic Mute & No Mic Mute model options • Mic Muted LED indicator • Full range volume control • FailSafe™ Compression on receive-side • Complies with Bellcore GR 314 max Rx SPL in AGC and frequency response windows when GNN headsets with foam cushions are used Transmit Specifications O ut put Le ve l - 3 0 d B V in t o 5 0 o h m s t y pic a l w it h 9 4 d B S P L O ut p ut I m p e d a n c e 5 0 o h m s +/ - 2 0 o h m s O pe ra t in g Curre nt R a n ge 3 - 1 4 0 ma Fre que n cy R a n ge - 3 d B @ 2 5 0 & 5 0 0 0 H z h a rd w i re D i s t o rt i o n <5 % S / N R a t io 5 0 d B m i n @ 1 k H z w i t h 5 m v i n p ut Dy n a mic R a n ge 1 2 d B m i n a t m a x ra t e d o u t p u t Po la rit y N o n Po la r Tx Switching Threshold Sensitivity 76 dB SPL @ 1 kHz typical T x S w it c h - U p T im e 5 - 1 5 m s w i t h a 7 0 - 8 6 d B t ra n s i t i o n a t t h e m i c T x S w it c h - D o w n t im e Switched Transmit Level differential 1 5 0 - 2 5 0 m s w i t h a 8 6 t o 7 0 d B S P L t ra n s i t i o n 12 +/-2 dB* M i c M ut e S ile nt M i c M ut e I n d i c a t o r R e d LE D D C R e s is t a n c e > 5 0 o h m s w i t h a 4 . 8 V D C 2 2 6 o h m s o u rc e Receiver Specifications I n p ut I m p e d a n c e 3 0 0 o h ms S e n s it ivit y 3 5 t o - 4 0 d B V f o r n o r m a l ra t e d o u t p u t AGC Th re s h o ld 3 5 t o - 4 0 dB V a t ma x vo lume AGC Co mpre s s io n R a n ge 4 0 dB AGC Att a ck Time <1 5 m s A GC D e c a y T im e 1 5 0 - 1 9 0 ms /1 0 dB Fre que n cy R e s po n s e 6 d B @ 2 5 0 & - 3 d B @ 3 0 0 0 H z h a rd w i re D i s t o rt i o n <5 % 1 0 dB int o AGC h a rdlin e w it h 3 0 0 o h m re s is t o r lo a d O ut p ut P o w e r Appro x . 2 2 mw int o 3 0 0 o h ms a t ma x vo lume Vo lume Co nt ro l R a n ge 2 5 dB S / N R a t io Up t o 6 0 dB w it h a s t ro n g s ign a l Other 1. Compliance: FCC Part 68, cULus, IC, OSHA with foam ear cusions 2. Temperature Operating Range: 0–50 C 3. Temperature Storage Range: -30 to +65 C www.gnnetcom.com GN Netcom 77 Northeastern Blvd. • Nashua, NH 03062 • 1-800-826-4656