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产品简介
Model 625A Award Winning Arbitrary Waveform Function Generator
Features：
· Model 625-Arb/Function/Pulse Generator
· Extreme Value
· Drift Free
· Programmable
· Multiple Operating Systems
Specifications：
Main Output
Frequency: DC to 21.5000000 MHz, 0.01 Hz steps
Level: 2 mV p-p to 10.000 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 ± 10 V, 1 mV steps (into 50 ohms)
Output impedance: 50 ohms
Freq. Accuracy: ±10 ppm (±5ppm optional)
Spectral Purity: DC to 100 kHz: ..................>-50 dBc100 kHz to 1 MHz.............>-45 dBc1 MHz to 12 MHz...............>-40 dBc12 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
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