4.2.3  Description of Circuit Board 
The circuit board of the Hydran 201Ci-1 is presented in Figure 4-7 below. 
 
Figure 4-7: Circuit Board of the Hydran 201Ci-1 
7.  Figure 4-7 RS-232 Computer Port Connector, DB-9 Male (J10):  This standard 
connector is used to interface the H201Ci-1 directly to a PC or to a smart modem.  
For wiring details, see Table D - 13.  The J16 USB computer port (item 8 in Figure 
4-7) is also available.