$keywords = "tech tips,tech tip,Tony Novacheck,Lost Pup,bias,amplifier,amp,DSL,TSL";
$title = "How to Bias Your DSL/TSL Amplifier";
$tech_tip = 'Revised 06/03/02
<P>
<OL>
<LI>Make sure amplifier is connected to a load with the proper
impedance selected.
<LI>Power up amplifier on STANDBY and let the circuit stabilize
for a couple of minutes.
<LI>Locate the male three pin molex connector (CON2) with the two
mini-pots (PR1 and PR2) on both ends found on the bottom of the tube
bay.
<LI>Connect DMM (set to read mV) with alligator leads, reference
common lead to center pin (pin2) on molex connector CON2 and positive
lead to pin1 on CON2.
<LI>Take amplifier off of STANDBY with no signal, adjust mini-pot
(PR1) closest to pin that the positive lead from your DMM is connected
to and set it to the mV voltage that is listed in the chart below.
<LI>Repeat steps 4 & 5 for pin3 and until both pin1 and pin3 mV
are the same.
</OL>
<P>

BIAS CHART mV SETTINGS 
<BR>
(pin1 and pin3)
<PRE>
DSL50 45mV           
TSL60/1/2 80mV
DSL100 90mV          
DSL401 1.375V
TSL100/122 90mV    
DSL201 .675V
</PRE>
';

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