리퍼비시 계측기
The J1996A Voice Quality Tester (VQT) Phone Adapter is used for testing digital telephone systems that do not use a standard E&M or FXO analog loop interface. The VQT Phone Apater provides a means of connecting to the handset cable of a telephone, or, line in and out from a PC sound card. It connects to the Voice Quality Tester E&M interface, or optionally, the VQT FXO interface. The Handset Interface provides for repeatable gain adjustments to and from the handset microphone and speaker circuits. The handset interface is designed for a typical telephone handset, ie a 200 Ohm dynamic ear piece and a electret microphone. The ear piece input has a +6dB gain and the microphone output is padded 30dB to match the typical voltage levels at the handset, relative to the phone line. Level adjustment are accomplished via DIP switches and are from -15 to +15 dB in 1 dB increments.
Telephony Interfaces
Physical
· One E & M port: RJ-45
· One FXO port: RJ-11
· Interface to Sound cards:
– Microphone Interface: Bantam Plug
– Speaker interface: Bantam Plug
· Handset interface: RJ-22
Dimensions
Height : 1.25
Length: 5.5
Width: 5.5
Weight: 1.35 kg(3 lbs)
Platform
Power:
(into External Power Supply) 100-240 V~, 50/60 Hz, 0.7A
Regulatory compliance:
(Phone Adapter) CE, C-Tick
(External Power Supply) CE, UL, CSA, TUV, MITI