Tektronix TYPE L Instruction Manual page 45

Replace the second paragraph of step 13 and the first paragraph of
step 14 with the following.
Remove the Type EP54 Plug-In Extension for this step. Now set the
AC-DC switch in DC position and the VOLTS/CM switch at .05. Install
a 20 pf Input Capacitance Standardizer on the INPUT connector of the
L Unit, and 5X Attenuator on the Standardizer.
with a P52 cable from a Type 105 Square-Wave Generator to the
Attenuator/Standardizer combination on the Type L Plug-In Unit.
Adjust the amplitude of the display to about 3.5 cm with the OUTPUT
AMPLITUDE control on the Type 105. AdjustC5732 for an optimum flat
top.
Make the adjustment to C5732 from the bottom of the plug-in with a
small pocket screwdriver.
each time the waveform is checked since the metal blade introduces
distortion.
14. Attenuator Input Capacitance and Frequency Compensation Adjust­
ments.
Trim m er capacitors are provided for standardizing the input cap­
acitance and compensating the voltage dividers at each step of the
VOLTS/CM switch.
an input characteristic of
picofarads of capacitance, while maintaining frequency compensation.
This permits a single setting of the probe adjustment suitable for
all positions of the VOLTS/CM switch.
Re-install the Type EP54 Plug-In Extension. The top of the waveform
in each position of the VOLTS/CM switch should match the top of the
waveform as seen in the .05 position.
This will no longer be a flat top since the EP54
introduces some peaking.
TYPE L
' Text Correction (13)
. *
The screwdriver will have to be removed,
This is done so the plug-in will always present
1 megohm of resistance shunted by 20
NOTE
Apply a 1 kc signal