Fluke 9640A Series, Instruction Manual

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9640A
Instruction Manual
3-4
Head I/O Connectors
The output of the Instrument is a proprietary interface to either a 9640A-50 or a
9640A-75 Leveling Head. The interface consists of two connectors: an SMA RF signal
output connector, and beneath, a multi-way locking connector for sensing and control of
the Leveling Head.
W
Caution
The 9640A front-panel connector interface is suited only for use
with Fluke 9640A-xx Leveling Heads. To avoid damage to the
Instrument no other connection is permitted.
The function of a Leveling Head is to deliver the Instrument output to the input of
another instrument (UUT) while maintaining the integrity of the signal. Using a Leveling
Head with the Instrument is the equivalent of connecting the UUT directly to the
Instrument output without using cables. The Leveling Head not only maintains the
overall quality of the signal, it also maintains an accurate level for the signal over the
frequency and amplitude range of the Instrument.
STBY/OPER (Standby/Operate) Keys
The

and

keys control signal availability at the Leveling Head Output
connector. Pressing

turns the green indicator on and places the Instrument in the
Operate mode (enables the signal at the RF Output connector). Pressing

turns the
yellow indicator on and places the Instrument in the Standby mode (removes the output
signal at the RF Output connector).
OPER OPER
STBY STBY
ead11f.eps
Standby/Operate Keys
Output Function Keys
There are five output function keys: three for selecting the output signal, one for defining
the preferences, and one for displaying units associated with each signal.
Output Signal Keys
Three hard keys define the main characteristics of the output signal. They are

,

(modulation), and

. Pressing any one of these keys brings up the initial
screen for that function and displays the current value for each of the previously defined
parameters. If, when any of these keys are pressed, the Instrument is in the operate mode
(Green light on the

key is lit), the RF Output is switched to standby.
SINE SINE
MOD MOD
SWEEP SWEEP
ead12f.eps
Output Signal Keys