1840R

1840R can test speedy the frequency response, 1kHz sensitivity etc. characteristics of the Dynamic receiver.

The fundamental combination of Type 1840R
Item	Model No.	Description	Usage
1.	184	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.	142 EA-S ( or 142 EK-S )	Artificial Ear ( 142 EA-S = IEC - 318 )	Receives the sound generated from the receive.
4.	186 ( Option )	Sorting Driver	Please refer to Note 1 as below.
5.	X-Y Mouse	Mouse	Replace the upward, downward, leftward, rightward and enter keys on the keyboard.
6.	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. Model-186 Sorting Driver when combined for use with Model – 160A ( or Model – 184 ) mainframe and user’s automatic sorting machine, can perform the automatic sorting which totally can be divided into 14 ranks. The sensitivity sorting is divided into 12 ranks (which are the same as the number of rank for the sensitivity sorting on the testing screen); Frequency response ranked at 13^th , while the other testing items, like : The impedance, distortion, ECM current etc. of the unqualified items ranked at 14^th (When the indicators of the 1st~13^th rank did not light up, it belongs to 14^th rank). Model-186 is very suitable for use in the automation for the receiver, transmitter and microphone factories.

2. The items that can be tested by 1840R is much more lesser than Type 1600R does, it can only test the frequency response curve and sensitivity of the receiver, but its test speed is faster.