Leader LBO-516 Instruction Manual - page 18
To compensate a probe for CH-3, proceed as follows:
1. Connect the probe to the CH-3 or EXT TRIG IN connector
(35) and a 1000 Hz signal source set for 8 Vp.p
output
amplitude.
2. Set the A TIME/DIV switch to .2 mS, the SOURCE
switch to .2 V/DIV, and the COUPLING switch to DC.
3. Press the ALT V MODE pushbutton (21), the A HORIZ
DISPLAY pushbutton (35), and push in the HOLDOFF
control (42).
4. Pull the PULL TRIPLE control (22) and adjust it to position
the CH-3 trace at midscreen. Adjust the LEVEL control (40)
if needed.
5. With a small screwdriver, adjust the capacitance-correction
trimmer (Figure 2-6a) for a correct-appearing square wave.
(Figure 2-6d).
2-3-5 Dual Trace Operation
Dual-trace operation is the major operating mode of the
LBO-516, since full amplification and attenuation facilities are
provided for the two channels. As was the case with Single-trace
Operation, you have a choice here too, not of channel selection,
but of how to display the two channels.
The LBO-516 is set up for dual-trace operation as follows:
1. Set the following controls as indicated below. Any controls not
mentioned here or in the following steps can be neglected.
VARIABLE VOLTS/DIV controls (11) Fully CW, and
pushed in
AC/GND/DC switches (16) ......................... AC
CH-2 INV switch (19) ................................. Out
PULL TRIPLE control (22) ......................... In
PULL QUAD control (23) ........................... In
A INTEN control (3) ................................... APS*
FOCUS control (5) ...................................... APS*
POWER switch (1) ..................... In
HORIZ DISPLAY switches (31) ..... A
B TIME/DIV switch (25) .............. 0.5/PS
A VARIABLE control (26) ........... Fully CW, and
pushed in.
SOURCE switch (34) .................. CH-I or CH-2**
COUPLING switch (36) ............... AC
SWEEP MODE switches (37) ........ AUTO
HOLDOFF control (42) ............................... Pulled out
.................................................................... (PRESET level)
Horizontal POSITION control (29) .. ............ APS*
*As previously set.
**See Step 6.
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