The 6600A Series (Figure 1-1) is a family of microprocessor-based, pushbutton-controlled, GPIB-capable, broadband signal sources that generate swept and CW frequencies from 10 MHz to 40 GHz. This ever-expanding family of sweepers presently consists of 29 models. These 29 models are divided into single-band and multiband sweep generators, depending upon the number of internal bands used for frequency-range coverage. Singleband models use one YIG oscillator to span their range, whereas multiband models use two or more YIGs, or a combination consisting of a YIG (or YIGs) and a frequency down-converter. 1-4 IDENTIFICATION NUMBER All WILTRON instruments are assigned a unique six-digit ID number, such as "205001." The first digit of this ID (2 in the example) represents the instrument's year-of-manufacture; the next two (05), its manufacturing "run;" and the last three (001), its serial number. Each 6600A Series sweep generator has two ID numbers assigned, one for the basic frame and one for the RF deck. The ID number for the RF deck, which provides primary identification, is affixed to the outside of the rear panel. The basic frame ID number appears on the inside of the rear panel. Please use the primary (outside) serial number when ordering parts or when corresponding with Customer Service. 1-5 OPTIONS The following options are available for the 6600A Series sweep generators: • Option 1, Rack Mount. Sweep generator comes equipped with mounting ears and chassis track slides that have a 90° tilt capability. • Option 2, 10 dB Step Attenuator. Sweep generator comes supplied with a front panel or GPIB-programmable 10 dB step attenuator. Step attenuator has a 70 dB range. • Option 3, GPEB Interface. Sweep generator is equipped to operate on the IEEE-488 (IEC-625) Interface Bus. With Option 3 installed, all front panel pushbuttons except POWER are bus-programmable. Option 3 may be installed in the field. • Option 9, Main RF Connector on Rear Panel. Sweep generator comes supplied with an SMA female connector installed on the rear panel rather than on the front panel. • Option 10, Auxiliary RF Output Connector (Rear Panel). Sweep generator comes equipped with a second RF connector (SMA female) installed on the rear panel. Its output power level is approximately 25 dB below the main connector power level, and its Maximum Leveled Power specification is derated by 1.5 dB. Option 12, RF Output Interface, Sweep Generator to Model 661 Tracking Sweeper Controller. Sweep generator comes supplied with a rear panel SMA connector for supplying a 10 dB attenuated RF sample to the Model 661 Tracking Sweeper Controller. Option 13, Hardware Interface to HP 5342 or HP 5343A Microwave Counter. Sweep generator comes supplied with a rear panel BNC connector that allows the HP counter to be used to count the marker frequency (ies). • Option 14, Data I/O Rear Panel Connector. Sweep generator comes supplied with a 37-pin Data I/O connector for interfacing the Model 661 Tracking Sweeper Controller with the IEEE-488 Interface Bus. Sweep generator must also have Option 3 .