The Dual Function Generator consists of two independent function generators (A and B), each capable of generating a sine-wave signal, a square-wave signal, a triangular-wave signal, a sawtooth-wave signal, and a pulse signal with variable pulse-width. The signal frequency can be varied from 10 Hz to 100 kHz through four ranges. A digital display is pushbutton-selectable between generators A and B to monitor the frequency of each generator. Each generator output signal level is continuously variable and may be attenuated by push buttonselected switch attenuators. TTL output signals are provided to synchronize external equipment, such as an oscilloscope. Generator A may be frequency-modulated by a signal from generator B or from an external source.
The module is fully protected against short circuits and misconnections. Students use the instruments to make measurements in laboratory experiments performed on AM, FM, and digital communications systems.

NOTE: This information is for the 9402-10 whereas ours is 9402-00.  Typically the suffix just denotes a variation in language or power input, but I cannot say for sure how our -00 may differ from the -10.

Specifications

• Power Requirement: ±25 V typ. 3 A max; -25 V typ 3 A max.; +11 V typ. 5 A max.
• Generators (A & B) Rating
• Waveforms: Sine, triangle, square, sawtooth, or pulse
• Pulse Duty Cycle: 10 to 90 %
• Frequency Ranges: 10-100 Hz, 100-1000 Hz, 1-10 kHz, 10-100 kHz
• Frequency Display (switchable between A & B): 4 digits
• Output Impedance: 50 Ω
• Output Level (open circuit): 10 mV p-p to 10 V p-p
• Attenuator: 0, 20, or 40 dB
• Synchronization Outputs One for each channel (SYNC/TTL)
• Frequency Modulation (Channel A only)
• Input Impedance: 100 kΩ
• Maximum Frequency Deviation: 50 % of each side of the rest frequency
• Input Level for Maximum Deviation: 10 V p-p

Physical Characteristics
Dimensions (H x W x D) 162 x 330 x 300 mm (6.4 x 13 x 11.8 in)
Net Weight 4.4 kg (9.7 lb)