BNC Model 625A Signal Generator (SG-100A/Telulex)
represents a major breakthrough
in price/performance for signal generation and signal measurements
and analysis. This versatile device allows the engineer to
access a broad range of operating modes such as arbitrary
waveform, pulse, word/data integration, function, VCO, AM,
FM, SSB, FSK, and burst.
625A
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Now completely updated
and with Wavegen software... 630 (21.5 MHz) and 632 (31.5
MHz)
630/632
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Berkeley
Nucleonics Corporation
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The BNC 625A is much more than
a a signal generator: Never before has so much versatility, capability,
and performance been packed into a single-low cost instrument. Its
architecture is based on the latest advances in DSP and DDS technology
which not only ensures calibrated and drift free performance, but
also gives the engineer signal measurement and analysis functions
such as voltage/power measurement and DTMF detection.
The BNC 625A delivers clean,
fully synthesized, DC to 21.5 MHz modulated or unmodulated waveforms
with ) 0.01 Hz frequency resolution and 1mV and 0.1 dBm amplitude
resolution. User friendly features include a large, easy-to read
LCD display which allows the user to see all modulation parameters
simultaneously. A full numeric keypad and encoder provides direct
editing of each parameter, without confusing sub-menus.
Areas of application include:
medicine, education, communications, photonics, circuit design,
power systems, and consumer electronics.
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Technical Specification
|
| Main Output |
| Frequency: |
DC to 21.5000000 MHz, 0.01
Hz steps |
| Level: |
2 mV p-p to 5.000 V p-p, 1 mV steps (into
50ohms) or -50.0 dBm to +18.0 dBm, 0.1 dBm steps (into 50ohms)
|
| Level Accuracy: |
±1% |
| Flatness: |
± 0.2 dB (DC-20 MHz) |
| DC offset: |
0 V to ± 4.0 V, 1 mV steps (into
50 ohms) |
| Output impedance: |
50 ohms |
| Freq. Accuracy: |
±10 ppm (±5ppm optional)
|
| Spectral Purity:
|
DC to 100 kHz: ..................>-50
dBc
100 kHz to 1 MHz.............>-45 dBc
1 MHz to 12 MHz...............>-40 dBc
12 MHz to 20 MHz..............>-35 dBc |
| Ext. Trigger/Gating/FSK/BPSK
input |
| Input impedance: |
80 ohms |
| Max. Input Level: |
±10 V |
| Max. gating freq: |
3 MHz |
| SYNC Output
|
| Amplitude: |
0 V to +5 V (TTL/CMOS compatible)
|
| Rise/Fall Time: |
Rise: < 8 ns; Fall: < 3 ns
|
| Output current: |
± 24 mA |
| RS232 port |
| Asynchronous, no parity,
1 start bit, 1 stop bit. |
| Baud Rate: |
Programmable, 300bps to 115.200 bps
|
| Remote operation from a terminal
or host computer |
| External Modulation Input |
| Maximum full scale input: |
±5 V (10 V p-p) |
| Input Impedance: |
30 kohms |
| General |
| Power: |
100-240 VAC, 47-63 Hz, 30W, 3 prong IEC
connector |
| Display: |
2 line by 40 character, LCD, backlight
|
| Weight |
Approx. 3.5 lbs. |
| Dimensions: |
5.1" x 9.3" x 10.2" (H x W x L)
|
| Operating Temperature: |
0 to 40 deg. C ambient |
| Operating Modes |
| The carrier frequency for
all modulation is 0 Hz to 21.5000000 MHz, 0.01
Hz steps |
| Basic
Sinewave (CW) Mode |
| Output frequency: |
0 Hz to 21.5 MHz, 0.01 Hz steps
|
| Frequency
Modulation (FM) Mode |
| Int. modulation freq: |
0 Hz to 10 kHZ, 1 Hz steps |
| Ext. modulation freq: |
DC to 35 kHZ |
| Peak frequency deviation: |
0 Hz to ± 5.0 MHz, 1 Hz steps
|
| Phase
Modulation (PM) Mode |
| Int. modulation freq: |
0 Hz to 10 kHZ, 1 Hz steps |
| Ext. modulation freq: |
DC to 35 kHZ |
| Peak phase deviation: |
0 to ± 180 deg., 1 deg. steps
|
| Sweep
Mode |
| Start/Stop freq: |
0 Hz to 21.5 MHz, 0.01 Hz steps
|
| Linear or log sweep. Up or Down sweep
direction |
|
| Free Run or Triggered sweep
(Int/Ext) |
| Sweep time: |
1 ms to 60 s 1 ms steps. |
| Burst
Mode |
| Trigger: |
Continuous or triggered from front panel,
RS232 or Ext Trig |
| Duration: |
1 ms to 99.999 s, 1 ms steps |
| Delay: |
0 ms to 99.999 s, 1 ms steps |
| Dual Tone Multi Frequency
(DTMF) Generate Mode |
| Dialing digits generated: |
0 to 9, #, *, A, B, C, D |
| Duration: |
1 ms to 10.000 s, 1 ms steps |
| Delay: |
0 ms to 10.000 s, 1 ms steps |
| Custom
Dual Tone Generate Mode |
| Tone 1, Tone 2 Frequency: |
DC to 10.000 kHZ, 1 Hz steps |
| Phase Offset: |
0 deg. to 359 deg., 1 deg. steps
|
| Output ON time: |
Cont. or 1 ms to 10.000 s, 1 ms steps
|
| Output OFF time: |
0 ms to 10.000 s, 1 ms steps>
|
| Voltage Controlled Oscillator
(VCO) Mode |
| Endpoint Frequencies: |
0 Hz to 21.5000000 MHz in 0.01 Hz steps
|
| Control input range: |
± 5.0V |
| Control signal bandwidth: |
DC to 35 kHZ |
| Amplitude Modulation (AM)
Mode |
| Int. modulation freq: |
0 Hz to 10 kHZ, 1 Hz steps |
| Ext. modulation freq: |
DC to 35 kHZM |
| Percentage modulation: |
Variable 0% to 100%, 1% steps
|
| Single Sideband (SSB)
Mode |
| Int. modulation freq: |
0 Hz to 5 MHz, 1 Hz steps |
| Ext. modulation freq: |
DC to 8500 Hz |
| Upper or Lower Sideband selectable
|
| Frequency Shift Keying
(FSK) Mode |
| Int. modulation freq: |
0 Hz to 130 kHZ, 1 Hz steps |
| Ext. modulation freq: |
0 Hz to 3 MHz |
| Mark/Space freqs: |
0 Hz to 21.5 MHz, 0.01 Hz steps
|
| Power & Voltage Measurement
Mode |
| Input signal range: |
± 5 V |
| Input signal bandwidth: |
DC to 50 kHZ |
| Power calc. impedance: |
Variable from 1 to 999 ohms |
| Binary Phase Shift Keying
(BPSK) Mode |
| Int. modulation freq: |
0 Hz to 130 kHZ, 1 Hz steps |
| Ext. modulation freq: |
0 Hz to 10 kHZ |
| Dual Tone Multi Frequency
(DTMF) Detect Mode |
| DTMF digits detected: |
0 to 9, #, *, A, B, C, D |
| Detection range: |
10 Vp-p max., 20 mVp-p min. |
| Detection time: |
100 ms |
| Other Modes
|
| New modes are constantly
being added. They can be obtained via www, email, or floppy
disk and downloaded to the BNC 625. Please check periodically
for availability. |
| Data
Modulation Mode |
| Message Date Length: |
1 to 960 bits> |
| Baud Rate: |
1 Hz to 130 kHZ in 1 Hz steps
|
| Mark/Space freqs: |
0 Hz to 21.5000000 MHz in 0.01 Hz steps
|
| Trigger: |
External, Keypress, or RS232 |
| Message Nonvolatile Storage: |
10 locations |
Arbitrary Waveform Generator
The Arbitrary Waveform Generator
allows you to design custom waveforms on your personal computer
and download them to the BNC 625A which generates them in real-time.
Arbitrary Waveforms may either be designed with a graphical Windows-based
design tool or be generated point-by-point in a variety of data
formats from your own application software. A data generator program,
example waveforms, and a downloading utility are included in this
option.
The Model 625A generates every
data point independent of repetition rate. Normally ARB's simply
replace the sinewave lookup table used in the DDS system with arbitrary
waveform datapoints. With this method waveform points are actually
skipped as the rest as the rep rate is increased. Our unique design
ensures you maintain the characteristics of your wave form.
The TTL/CMOS SYNC output can
be independently controlled which lets you create a pattern of logic
pulses along with your analog waveform. This output swings 0V to
+5V and can be directly drive digital logic. It is useful for designing
arbitrary digital waveforms or generating a triggering or synchronizing
pulse along with the analog waveform.
The BNC 625A will receive and
parse waveform data in a multitude of formats. No confusing protocols
or headers are required, and the data may be separated by any non
digit character (carriage returns, commas, tabs, spaces, etc.),
which makes it easy to download data from a variety of application
programs, spreadsheets, and sampling oscilloscopes.
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Arbitrary Waveform
Generator Specifications
|
| Vertical Resolution:
|
12 bits
|
| Sample Update Rate:
|
Variable from 0 Hz to 40
Msamples/s in 0.01 Hz steps. |
| Sample Buffer Depth:
|
32,768 datapoints
|
| Run Mode |
Continuous or Internal/External
Triggered |
| Data Formats: |
Floating Point, Decimal,
Hexadecimal, Integer, Binary, .CSV and .PRN formats.
|
Function Generator
The function generator offers
a set of pre-stored waveforms which are generated using the Arbitrary
Waveform hardware. The user may quickly select from many stored
waveforms, and may also specify a repetition rate to 2 MHz. All
functions may be generated on a continuous or triggered basis. A
high going synchronizing pulse is a given on the SYNC Output at
the start of each waveform.
|
Function Generator
Specifications
|
| Waveforms:
|
Positive ramp,
Negative Ramp, Triangle, Positive Exponential, Inverted Positive
Exponential, Negative Exponential, Inverted Negative Exponential,
Random (noise) |
| Repetition Rate: |
0 Hz to 2 MHz in 1 Hz steps,
all functions |
| Run Mode: |
Continuous or Internal/External
Triggered |
| Output level: |
8 mVp-p to 20 Vp-p unloaded
or 4mVp-p to 10Vp-p into 50 ohms |
Pulse Generator
The Pulse Generator allows
the user to generate pulse waveforms with adjustable amplitude,
offset, frequency and duty cycle. The pulse may be generated on
a continuous or triggered basis.
|
Pulse Generator
Specifications
|
| Frequency: |
0 Hz to 2 MHz in 1 Hz steps
|
| Duty Cycle: |
Variable 0% to 100% in
1%steps |
| Output: |
Variable in amp. and offset.
A TTL/CMOS compatible Synch Out is simultaneously provided.
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Last modified January 2003.
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