TB 9-6625-2328-35
(7) Increase function generator dc offset in 1 mV increments until TI Gate
indicator flashes and frequency indication is stable at approximately 1 MHz. Add 40 mV
to function generator dc offset indication and record results. Example: -29 mV + 40 mV =
11 mV.
(8) Set function generator dc offset to +60 mV.
(9) Press TI CHANNEL 1 Trigger/Sensitivity key until SLOPE: is displayed
then press ⇒ key to display SLOPE: NEG.
(10) Press TI RUN key.
(11) Decrease function generator dc offset in 1 mV increments until TI Gate indicator flashes
and frequency indication is stable at approximately 1 MHz. Subtract 40 mV from function generator dc
offset indication and record results. Example: 28 mV 40 mV = -12 mV.
(12) Calculate trigger level by adding results recorded in (7) and (11) above.
Example: 11 mV + -12 mV = -1 mV. Calculated trigger level will be between -15 and +15 mV.
(13) Connect function
generator
Function Outputs Unbalanced to
TI
CHANNEL 2 input.
(14) Press TI MEASURE Freq & Ratio key until FREQUENCY 2 is displayed.
(15) Set function generator for a square wave, 1 MHz, 80 mV p-p, -60 mV dc offset,
50Ω output.
(16) Press TI RUN key.
(17) Increase function generator dc offset in 1 mV increments until TI Gate
indicator flashes and frequency indication is stable at approximately 1 MHz. Add 40 mV
to function generator dc offset indication and record results. Example: -28 mV + 40 mV =
12 mV.
(18) Set function generator dc offset to +60 mV.
(19) Press TI CHANNEL 2 Trigger/Sensitivity key until SLOPE: is displayed
then press ⇒ key to display SLOPE: NEG.
(20) Press TI RUN key.
(21) Decrease function generator dc offset in 1 mV increments until TI Gate
indicator flashes and frequency indication is stable at approximately 1 MHz. Subtract 40
mV from function generator dc offset indication and record results. Example: 33 mV 40
mV = -7 mV.
(22) Calculate trigger level by adding results recorded in (17) and (21) above.
Example: 12 mV + -7 mV = 5 mV. Calculated trigger level will be between -15 and +15
mV.
(23) Disconnect function generator from TI.
b. Adjustments. No adjustments can be made.
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