181: Difference between revisions

181 (view source)

Revision as of 01:40, 31 August 2014

50 bytes added , 31 August 2014

year

Peter

Bureaucrats, Interface administrators, Suppressors, Administrators

36,344

edits

@@ Line 1: / Line 1: @@
-The Tektronix Type 181 is a time mark generator [[introduced in 1955]].  There is a benchtop version,
+The '''Tektronix Type 181''' is a time mark generator [[introduced in 1955]].  There is a benchtop version,
 the 181, and a rackmount version, the RM181. MOD 110 substitutes a oven-stabilized
 MHz crystal oscillator (OCXO), the CO181 (Tek part number [[158-007]]),
 thereby achieving 2 parts per million
 frequency stability in a 24 hour period, the same stability as the [[180A]].
@@ Line 16: / Line 16: @@
 So it triggers once every ten input pulses.
-The 181 also provides a 10MHz output.  This is generated a 10MHz resonator that
+The 181 also provides a 10 MHz output.  This is generated by a 10 MHz resonator that
 is driven by an amplified and waveshaped copy of the 1MHz crystal oscillator output.
-Since it is a harmonic, the 10MHz output has same frequency percentage accuracy is
+Since it is a harmonic, the 10 MHz output has same frequency percentage accuracy is
 the reference oscillator.
-The power supply of the 181 produces +300V and -150V regulated voltages and
+The power supply of the 181 produces +300 V and -150 V regulated voltages and
-+400V, -8V, and -25V unregulated.  The voltage reference is a [[5651]] tube.
++400 V, -8 V, and -25 V unregulated.  The voltage reference is a [[5651]] tube.
 The output tubes for both regulators are [[12B4]] and the feedback amplifier
 tubes are [[6AU6]].  The 181 does not contain a fan or a [[thermal cutoff]].
@@ Line 40: / Line 40: @@
 [[Category:Pulse generators]]
+[[Category:Introduced in 1955]]