1. Place DS2153 in location marked U1.
2. Place 2.048 MHz oscillator in location marked X3.
3. Place 8.192 MHz crystal in location marked X1.
4. Remove and replace Rr.
5. Place Rt as required, see note 3 below.

1. Place DS2151 in location marked U1.
2. Place 1.544 MHz oscillator in location marked X3.
3. Place 6.176 MHz crystal in location marked X1.
4. Remove and replace Rr.
5. Place Rt as required, note 3 below.

1. Recommended oscillators: NTH039A-1.544000 & NTH039A-2.04800.
   Recommended crystals: 6.176 MHz SRX5310(L) & 8.192 MHz SRX5469(L)
   
   Saronix
   151 Laura Lane
   Palo Alto, CA 94303
   Phone: (415) 856-6900
   Fax: (415) 856-4732
   http://www.saronix.com
   
   
2. The DS2151DK and DS2153DK are both shipped with a 1:1.15 transformer (PE-65388) in the transmit path. Some of the configurations in the data sheets specify a 1:1.36 transformer, PE-64937 is a 1:1.36 transformer available from Pulse Engineering.
   
   Pulse Engineering
   P.O. Box 12236
   San Diego, CA 92112
   Phone: (619) 674-8100
   Fax: (619) 674-8262
   http://www.pulseeng.com
   
   
3. The DS2151DK and DS2153DK are both shipped with Rt = 0Ω, R5 & R6 are shorted in the PCB. Some of the configurations in the data sheets specify non zero resistors for Rt. In order to place resistors, Rt ≠ 0, the traces must be cut. Carefully cut the traces connecting the through holes for R5 & R6 with an X-acto knife, and solder the resistors in place.

APP 347: May 15, 2001 APPLICATION NOTE 347, AN347, AN 347, APP347, Appnote347, Appnote 347