TB 9-4931-538-40
(37) Press More and Histogram keys. Press Window/Acquire/Results key until
Window is highlighted.
(38) Press Time/Voltage Histogram key until Time is highlighted and set
WINDOW MARKERS1 to -0.25 mV and WINDOW MARKERS2 to +0.25 mV.
(39) Press Window/Acquire /Results key until Acquire is highlighted and enter
number of samples as 1000. Press Start Acquiring key. Wait until acquire cycle is
100% complete.
(40) Press Window/Acquire/Results key until Results is highlighted. Press the
Sigma key. The sigma value will be < 2.5 ps + (5E-5 x delay setting from value of step 35
above). If the TI does not meet the jitter specification, perform SECTION IV, paragraph
23, and repeat (30) through (40) above for delay setting of 20.5 ns. Example with a delay
setting of 20.5 ns: <2.5 ps +[(5 x l0-5)x(20.5 x 10-9 )] = 2.5 ps + 1.025 ps <3.525 ps.
(41) Remove all connections from TI.
b. Adjustments. No further adjustments can be made.
12. TDR System
a. Performance Checks
(1) Set POWER STBY/ON switch to STBY.
(2) Press and hold down the top or bottom FUNCTION keys and set POWER
STBY/ON switch to ON continuing to hold keys until the graticules are displayed.
(3) Set the display menu and mainframe settings to meet the following conditions:
(a) Press Display key. Display Mode to Average is highlighted. NUMBER
OF AVERAGES to # Averages = 16. Screen to Single is highlighted. Graticule to
Frame is highlighted. Bandwidth to 12.4 GHz is highlighted.
(b) Press Channels key. Channel 1 display On is highlighted. Channels 2
through 4 display Off is highlighted. VOLTS/DIV to Sensitivity =5.000 mV/div.
OFFSET to Offset = 0.000 V. PROBE ATTEN to Chl Atten Factor = 1.000.
(c) Press Timebase key. TIME/DIV to Sweep Speed = 50.0 ps/div. DELAY
to Delay = 16.0000 ns. Delay Ref at Left is highlighted. Freerun/Trg'd Sweep to
Freerun is highlighted. FREERUN RATE to 10 kHz is highlighted.
(d) Press Trigger key. TRIGGER LEVEL to Trigger Level = 0.000 V.
Slope to Pos is highlighted. PROBE/ATTEN to Ext Atten Factor = 1.000. HF Sens to
Off is highlighted. HF Reject to Off is highlighted.
(e) Press MORE and Network keys.
Reflect/Trans/Cal to Reflect is
highlighted. Step & Chan 1 to On is highlighted.