1900

Can test the freq. response curve, sensitivity and distortion of the receiving, sending and side tone of the mobile-phone, suitable in production use and for the research and development by the R&D.

Test fixture has the feature for universal positioning the telephone, and has the air cylinder for automatic close/open the cover of the test box, manual open/close can be done also.

Has auto statistics function, curves displayed in various colors, comparable, dB and frequency displayed in digits.

Sensitivity upper/lower limits and frequency response upper /lower limits can all be set by the user, auto-judging the PASS/FAIL

*The fundamental combination of Type 1900*
Item	Model No.	Description	Usage
1.	190 A	Electro acoustic Analyzer	Mainframe. To control and process the input、output signal.
2.	Monitor & Keyboard	High Resolution Color Display Monitor & Keyboard	Display the tested results & data and key in data. User may buy these two items at his local market, since price is cheaper and can save freight charge and import tax.
3.	191	Test Fixture	Please refer to Note as below
4.	140M	Artificial Mouth	Generates a flat and stable、precise sound field, for testing the “Transmitter".
5.	142EA-S	Artificial Ear ( 142EA = IEC - 318 )	Receives the sound generated from the receive.
6.	X-Y Mouse	Mouse	Replace the upward, downward, leftward, rightward and enter keys on the keyboard.
7.	HP Printer ( Option)	Printer (All the HP DeskJet or HP Laser Printers that are supported by DOS can all be used.)	Print out the tested results & data.

1. Since Model-191 Test Fixture is a testing box designed for the convenience testing of the cellular phone (GSM) in a production line, thus, the positioning of the artificial mouth is not in the standard position ( The position varies from the size of the GSM ), thus, the tested frequency response curve and the loudness rating of the sending are treated only as a reference value and not as the standard value, in actual using, user must first use a Golden Sample as a reference standard , and compare it with the same type ( or same model ) GSM.

2. The inner part of Model-191 Test Fixture contains of sound absorption material , it can isolate most of the ambient noise when the test box’s cover is being closed , besides, since the volume of Model-191 is not big, so it does not need a big space, and , Model-190A mainframe can fully control the open/close of the cover of Model-191 Test Fixture, to attain the purpose for automation of the 〝Close cover→ testing→open cover 〞, aside from auto control function, manual control for the open/close of the cover also allowable, thus, it is very suitable in production line for testing the cellular phone, the electro acoustic characteristics of the cellular phone that can be tested by Type 1900 consist of the frequency response curve 、loudness rating and the distortion for both the sending and receiving .