A calibration by Custom-Cal is performed by engineers with extensive OEM experience. We have the expertise and the necessary standards to perform the BK PRECISION 4085 Calibration, onsite calibration may be available. We specialize in quick turnaround times and we can handle expedited deliveries upon request.

Need another Function Generator?
Shop for Comparable Products on our
 used Function Generator page or new Function Generator page

   BK PRECISION 4085   Description / Specification:   Spec Sheet 
BK PRECISION 4085 40 MHz Programmable DDS Function Generator

The B&K Precision 4085 is a 40 MHz DDS (direct digital synthesis) function generator that creates stable, accurate output signals for all 27 built-in standard and complex (arbitrary) waveforms. The generators produce high purity, low distortion sine waves, square waves up to 40 MHz and provide a stable output of very small signals down to the 1mV - 10mV range. The instrument also provides a built-in 100 MHz universal counter with frequency measurement and totalize function. It provides extensive modulation capabilities including AM, FM, FSK, PSK, pulse modulation and linear/logarithmic sweep. Internal and external modulation sources, as well as internal, external and gated trigger sources are supported. Modulation parameters can be set precisely and are adjustable over a wide range. For instance burst count is programmable in 1 burst increments up to 10000 bursts and burst phase is adjustable in 0.1° increments. Adjust parameters via knob or numeric keypad. Enter amplitude values directly in Vpp, mVpp, Vrms, mVrms or dBm and display the correct voltage by entering the actual output configuration used (terminated with 50 Ohm or open circuit). It is fully programmable via the standard RS232 interface, using SCPI commands. Specifications. Frequency Range: 1 µHz to 40 MHz (Sine, Square), 1 µHz to 100 kHz (All Other waveforms). Resolution: 1 µHz. Accuracy: <= ± 5x10^-6 (22°C ±5°C). Amplitude Range: Freq <= 40MHz: 2mV to 20Vpp (open circuit) , 1mV to 10Vpp (50 ohms). Amplitude Resolution: 2 µVpp (open circuit), 1 µVpp (50 ohms). Amplitude Accuracy: ± 1%+0.2 mV (sine wave relative to 1 kHz). AM Carrier Waveforms: Sine or Square. AM Internal Modulating Waveform: Sine, Square, Triangle, Rising/Falling Ramp. AM Frequency of modulating signal: 100 µHz to 20 kHz. FM Carrier Waveforms: Sine or Square. FM Internal Modulating Waveform: Sine, Square, Triangle, Rising/Falling Ramp. FM Frequency of modulating signal: 100 µHz to 10 kHz. Counter Frequency Measurement: 1 Hz to 100 MHz. Storage Parameters: frequency, amplitude, waveform, DC offset values, modulation parameters. Storage Capacity: 10 user configurable stored states.


Standard Calibration $160.00 *
Click on Logo for More Prices
*This is a Web introductory price for one calibration of the BK PRECISION 4085. Price does not in most cases include measurement performance data. Pricing does include NIST traceable calibration and issue of a calibration certificate and calibration label. Pricing may vary slightly due to volume and location of laboratory supporting calibration. Volume pricing may apply. On-site fees may apply depending on logistics, location and volume of work to be completed during the visit.

Related Bench Equipment Terms and Definitions. For a complete list go to our  Terms and Definitions Page.

Bandwidth is the difference between the upper and lower frequencies in a contiguous set of frequencies within which a component, link or network will operate.

Frequency Span
Frequency Span specifies the range between the start and stop frequencies, also referred to as bandwidth

Noise Figure
Noise Figure the ratio of the signal-to-noise power ratio at the input to the signal-to-noise power ratio at the output.

Ringing is an unwanted oscillation of a voltage or current.

Please contact us for your BK PRECISION 4085 CALIBRATION and/or BK PRECISION 4085 40 MHz Programmable DDS Function Generator REPAIR

I'm interested in: 
Calibration Type (Select one):

Repair Information:
 Serial Number:

 Is there any physical damage?  
 If yes, describe:

What is the description of the problem?

How/when did the problem start?

 (*) Required Fields    For formal quote please fill in all fields.
From (Email):*
Contact Name:*
Address 1:
Address 2:
State/Territory/Province: *
Zip/Postal Code: