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AGILENT 35670A
Supplemental Operator’s Guide
33
Section 13 : Order Domain Results in List Mode
Machinery run-ups and run-downs can be analyzed with order analysis, which is
spectral analysis normalized to RPM. Results can be simplified by examining only a
list of amplitude versus order, so that only desired results are examined.
To set up and measure a list of 10 orders for a machinery run-up, follow these steps:
• Press the green [Preset] hardkey
• Press [DO PRESET] softkey (F1).
• Press the [Pause/Cont] hardkey if desired.
• Press the [ORDER ANALYSIS] softkey (F3).
• Press [CHANNELS 1 24 ] softkey (F7) until 1 is highlighted.
• Press the [Input] hardkey
• Press the [CH1 AUTO UP ONLY] software (F5).
Order analysis requires a tachometer signal connected to the TACH BNC at
the back of the analyzer. To set up the AGILENT 35670A for the tachometer
signal, follow these steps:
• Press the [TACHOMETR SETUP] softkey (F9).
• Toggle the [TACH DISP ON OFF] softkey (F6) until ON is highlighted.
• Press the [TACH PULS PER REV] softkey (F1).
• Enter the number of tachometer pulses per shaft revolution
and press the [ENTER] softkey (F1).
• Press the [LEVEL] softkey (F3).
• Enter the tachometer level and press the [ENTER] softkey (F1).
If in doubt about the tachometer level, enter 0.5 V and experiment with
level, slope, and trigger range until a tachometer display is shown.
Prepare the order display as follows:
• Press the [Disp Format] hardkey.
• Press the [UPPER/LOWER] softkey (F3).
• Press the [Active Trace] hardkey.
• Press the [B] softkey (F1)
Prepare the order results list as follows:
• Press the [Analys] hardkey.
• Press the [DATA TABLE] softkey (F5).
• Toggle the [TABLE ON OFF] softkey (F1) until ON is highlighted.
• Press the [INSERT X VALUE] softkey (F4).
• Enter 1 and press the [ORDERS] softkey (F1).
• Enter 2 and press the [ORDERS] softkey (F1).
• Enter 3 and press the [ORDERS] softkey (F1).