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Model 577 | 0.001 Hz to 20 MHz Digital Delay / Pulse Generator
The Model 577 is the latest in Berkeley Nucleonics’ series of precision pulse/delay generators. This benchtop unit provides industry-leading timing accuracy, rich features, and flexible form factors for synchronizing multiple pulses across diverse applications.
- 4 or 8 independent output channels
- 250 ps resolution (delay and pulse width)
- Delay range: 0 ns – 1000 s
- Pulse width range: 10 ns – 1000 s
- Repetition rate: 0.001 Hz to 20 MHz
- Accuracy: 1 ns + 0.0001 × setpoint
- Independent digitally controlled delay/pulse width per channel
- Supports bursts, nested bursts, different channel modes
- Interfaces: USB/RS-232 standard; optional Ethernet/GPIB
- External clock sync (10–100 MHz options), gating/triggering flexibility
- Flexible I/O: Mix of optical/electrical inputs and outputs (optional high-voltage, optical modules)
- RMS jitter: <50 ps (channel-to-channel; internal ~50–200 ps depending on config)
- Cost-effective precision for laser systems, research, synchronization, and test setups
Quick Specs
- Channels: 4 or 8 Independent Channel Outputs
- Resolution: 250 ps
- Accuracy: 1 ns +.0001 x setpoint
- RMS Jitter: < 50 ps (channel to channel)
- Voltage: 5V Peak for TTL, 45V Peak for Adjustable.
- Pulse Width: 10 ns – 1000 s
- Memory: 12 Storage Slots
Service Features
- Warranty: Full 3 Year Warranty
- Integration Assistance, Full Customer Support (Phone or Web-Based)
- Lifetime No-Cost Firmware upgrades
Model 577 DIGITAL DELAY GENERATOR CONFIGURATOR
| Frequency Range: | 4 Channels 8 Channels |
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| Channel A and B: | [-AT20] TTL (Hi-Z) / 2 - 20V Adj (Hi-Z) - Standard Configuration [-TZ50] TTL (50Ω) / 2 - 20V Adj (Hi-Z) [-AT35] TTL (Hi-Z) / 5 - 35V Adj (50Ω) [-TZ35] TTL (50Ω) / 5 - 35V Adj (50Ω) [-AT45] 4 - 45V Adjustable (Hi-Z / 50Ω) [-L82] 820nm Optical Output (720nm to 830nm) [-L130] 1300nm Optical Output (1200nm to 1650nm) |
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| Channel C and D: | [-AT20] TTL (Hi-Z) / 2 - 20V Adj (Hi-Z) - Standard Configuration [-TZ50] TTL (50Ω) / 2 - 20V Adj (Hi-Z) [-AT35] TTL (Hi-Z) / 5 - 35V Adj (50Ω) [-TZ35] TTL (50Ω) / 5 - 35V Adj (50Ω) [-AT45] 4 - 45V Adjustable ( Hi-Z / 50Ω) [-L82] 820nm Optical Output (720nm to 830nm) [-L130] 1300nm Optical Output (1200nm to 1650nm) |
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| Channel E and F: | [-AT20] TTL (Hi-Z) / 2 - 20V Adj (Hi-Z) - Standard Configuration [-TZ50] TTL (50Ω) / 2 - 20V Adj (Hi-Z) [-AT35] TTL (Hi-Z) / 5 - 35V Adj (50Ω) [-TZ35] TTL (50Ω) / 3 - 35V Adj (50Ω) [-L82] 820nm Optical Output (720nm to 830nm) [-L130] 1300nm Optical Output (1200nm to 1650nm) |
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| Channel G and H: | [-AT20] TTL (Hi-Z) / 2 - 20V Adj (Hi-Z) - Standard Configuration [-TZ50] TTL (50Ω) / 2 - 20V Adj (Hi-Z) [-AT35] TTL (Hi-Z) / 5 - 35V Adj (50Ω) [-TZ35] TTL (50Ω) / 5 - 35V Adj (50Ω) [-L82] 820nm Optical Output (720nm to 830nm) [-L130] 1300nm Optical Output (1200nm to 1650nm) |
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| Trigger Gate Input Type: | [-IA15] Electrical 15V Adj. Threshold - Standard Configuration [-IL82] 820nm Optical Input [-IL130] 1300nm Optical Input |
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| System Option: | [-DT15] Add Dual Trigger Input [-COM] Add LAN and GPIB Port [-US] 115V North American Power Cord [-EU] 230V European Power Cord |
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Model 577-4C-AT20-AT20-IA15-S-US
DC to 20 MHz DDG, 4 Channel, TTL/20V Adj, TTL/20V Adj, Electrical Trigger Input, RS232 & USB, North Am Power Cord
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Frequency (Period) Range
0.001Hz to 20MHz (1000s to 50ns)
577-4C
577-8C
4 Independent Output Channels
8 Independent Output Channels
Internal Rate Generator
Rate (T0 period)
0.001 Hz to 20.000 MHz (1000 s – 50 ns)
Resolution
5 ns
5 ns + (0.0001 x period)
T0 Period Jitter
< 50 ps RMS
Time Base
200 MHz, low jitter PLL
Oscillator
50 MHz, 50 ppm crystal oscillator
System Output Modes
Single, Normal, Burst, Duty Cycle, External Gate/Trigger
Burst Mode
1 to 10,000,000 pulses
Duty Cycle Mode
1 to 10,000,000 pulses ON and/or OFF
Pulse Control Modes
Internally triggered, externally triggered or external gate.
Timing Generator
Pulse Width Range
10 ns -1000 s
Width Accuracy
1 ns + 0.0001 x width setting
Width Resolution
250 ps
Pulse Delay Range
0 – 1000s
Delay Accuracy
1 ns + 0.0001 x delay setting
Delay Resolution
250 ps
Jitter (channel to channel)
< 50ps RMS
Output Multiplexer
Any/all channels may be OR’d to any/all outputs
Time Base
Same as the internal rate generator
Channel Output Modes
Single, Normal, Burst, Duty Cycle
Burst Mode
1 to 10,000,000 pulses
Duty Cycle Mode
1 to 10,000,000 pulses ON and/or OFF
Wait Counts
1 to 10,000,000 pulses
Channel Control Modes
Internally triggered or external gated. Each channel may be independently set to either mode.
Output Module (AT20)
TTL/CMOS Mode
Output/Source Impedance
High Impedance
Output Level
4.0 V (typical) into 1 kΩ
Rise Time (10% – 90%)
< 3ns (1.5ns typical)
Jitter
< 50 ps RMS channel to channel
Adjustable Mode
Output Level
2 V to 20 VDC into 1 kΩ or 1 V to 10 VDC into 50 Ω
Amplitude Resolution
10 mV
Current
200 mA typical, 400 mA (short pulses)
Rise Time (10% – 90%)
15 ns (typical) @ 20V into Hi-Z (25 ns typ @ 10V into 50 Ω)
Slew Rate
0.1V/ns
Overshoot
< 1 V + 10% of pulse amplitude
Input Module (IA15)
Trigger Input
Function
Generate individual pulses, start a burst or continuous stream
Rate
DC to 1/ (200 ns + longest active pulse). Maximum of 5 MHz
Slope
Rising or Falling
Threshold
200 mV to 15 VDC
Maximum Input
60 V Peak
Resolution
10 mV
Trigger Accuracy
±3% of Threshold Voltage
Impedance
1.2K ohm
Trigger Jitter
< 800 ps RMS
Insertion Delay
< 110 ns
Minimum Pulse Width
20 ns
Pulse Inhibit Delay
< 150 ns RMS
Output Inhibit Delay
< 100 ns RMS
Gate Input
Mode
Pulse Inhibit or Output Inhibit
Polarity
Active High or Active Low
Memory and Connectivity
Memory Storage
16 Memory Location
USB
USB 1.0 Standard
RS-232
DE-9F Connector using RS-232 Communications Standard
External Clock In
10 MHz – 100 MHz user selectable in discrete values
External Clock Out
To or Ref out (10 to 100 MHz) user selectable in discrete values
Physical and Environmental
External Clock Out
10.5” x 8.25” x 5.5” [267 x 210 x 140mm]
Weight
8 lbs [3.6 kg]
Power
100 – 240 VAC 50/60 Hz <3 A
Fuse
3.15 A, 250 V Time-lag (Qty 2)
Operating Temp
32 – 104°F [0 – 40°C]
Transportation & Storage Temp
-40 – 158°F [-40 – 70°C]
Shipping Dimensions
18x12x9″
Shipping Weight
10 lbs
Channel Multiplexing
One of the more unique features of the Berkeley Nucleonics pulse generators is the ability to combine the timing of any or all channels together and output them out of any of the output BNCs. The multiplexing function (MUX) can be set through remote communications via a computer or from the front panel of most units.
Selectable Clock Reference
The Model 577 offers additional inputs and outputs for external clock synchronizing. Specify your input/output reference frequency (10 MHz to 100 MHz). Synchronize with the Mode Lock Oscillator of a laser or phase lock multiple units with one clock.
Flexible Gating Options
The Model 577 is packed with gating options for almost any setup. You may gate with a channel or on any input. You may gate individual channels or gate all. Gate immediately (output inhibit) or gate after a pulse (pulse inhibit).
External Trigger Options
Select channels for internal/external triggering, or free-run. Triggered channels have flexible output choices: single pulse, burst at its clock rate, continuous pulse train or a series of on/off pulses (duty cycle). Contact us for custom wave trains or modes.
Individual Rates
Each channel can have individual channel rates (either T0 or any of the other channels…).
Auto-Save
Forgot to save your settings? The Model 577 stores your setup configurations while powering down. Recall is automatic on power-up.
Dual Input Panel Connectors
The Model 577 offers two inputs for triggering or gating. You may specify electrical or optical input signals, and configure any trigger/gate combination. Use Trigger #2 to disable a triggered pulse train.
Front Panel High Voltage
Our modular architecture offers expanded functionality on user-selected front panel outputs. We offer a front panel High Voltage option (adjustable from 35V, 200 mV steps) on 2, 4, 6, or all 8 channels.
Front Panel Optical
Many applications benefit from optical signals. For noisy environments or communications applications, we offer an LED output stage at the front panel. This modular option can be configured for 2, 4, 6, or 8 outputs at 820nm or 1300nm.
Combined Output Types
The outputs are configured in modules and output types are combined in pairs. Thus one may select optical, standard electrical, or high voltage electrical in pairs for their instrument. For example, an 8-channel unit may have optical, standard electrical, and high voltage outputs all on one instrument. Custom or additional output modules may be added as the need arises. See our helpful Order Chart for all option configurations.
Field Programmability
The instrument can now have functions upgraded in the field, such as a special or custom feature upgrade via a fully programmable FPGA.
Custom Output Modes
Custom Modules such as the TZ-50 give users an expanded list of capabilities with the Model 577. One example is our TZ50 option, which provides customers a TTL signal into 50 Ω expanded.
Negative Delay
Use the convenient negative delay feature to reference one channel with respect to another channel in positive or negative time increments. By allowing a channel to reference another channel as its trigger, you can synchronize the channels with respect to each other.
Note: The Negative Delay cannot trigger a channel before your initial trigger. It is intended to complement the channel referencing option.
Model 577 is Available Worldwide
BNC Digital Delay / Pulse Generator available worldwide. BNC Digitaler Verzögerungs- / Impulsgenerator weltweit verfügbar. BNC Generatore di ritardo / impulso digitale disponibile in tutto il mondo. Générateur de retard / impulsion numérique BNC disponible dans le monde entier. BNC 디지털 지연 / 펄스 발생기 전 세계에서 사용 가능. BNC デジタル遅延/パルスジェネレーターは世界中で利用可能です.
Option L82 or Option L130 - Optical Outputs
Wavelength
820 nm or 1300 nm
Maximum Signal Rate
5 MBd
Maximum Link Dist.
1.5 km
Connector Type
ST
Insertion Delay
< 180ns
Option TZ50 - TTL 50 Ω Output Impedance
TTL/CMOS Mode
Output Level
4.0 V typ into 50 Ω
Rise Time
< 3 ns (2ns typical)
Slew Rate
0.5 V/ns
Jitter – Channel to Channel
50 ps RMS
Adjustable Mode
Output Level
2 V to 20 VDC into 1 kΩ or 1 V to 10 VDC into 50 Ω
Amplitude Resolution
10 mV
Current
200 mA typical, 400 mA (short pulses)
Rise Time (10% – 90%)
15 ns (typical) @ 20V into Hi-Z (25 ns typ @ 10V into 50 Ω)
Slew Rate
0.1V/ns
Overshoot
< 1 V + 10% of pulse amplitude
Option AT35 - 35V Adjustable Output
TTL/CMOS Mode
Output Level
4.0 V typ into Hi-Z
Rise Time
< 3 ns (2ns typical)
Slew Rate
0.5 V/ns
Jitter – Channel to Channel
50 ps RMS
Adjustable Mode
Current
5 V – 35 V into 50Ω load at 200 Hz
Current
10 mV
Current
< 30 ns
Current
500 mV
Current
4 kHz
Option TZ35 - TTL 50 Ω Output Impedance + 35V Adjustable Output
TTL/CMOS Mode
Output Level
4.0V into 50 Ω (typ)
Rise Time
< 3 ns (2ns typical)
Slew Rate
0.5 V/ns
Jitter – Channel to Channel
50 ps RMS
Adjustable Mode
Output Amplitude
5V – 35V into 50Ω load at 200 Hz
Resolution
10 mV
Rise Time (10% – 90%)
< 30 ns
Accuracy
500 mV
Max. Frequency (Internal & External)
4 kHz
Option AT45 - 45V High and Low Impedance
Amplitude
4V – 45V
Resolution
20 mV
Accuracy
+/-1.5%
Rise Time (10%-90%)
< 2ns into 50 Ω (typ)
< 9ns into Hi-Z (typ)
Fall Time (90%-10%)
< 9ns into 50 Ω (typ)
< 9ns into Hi-Z (typ)
Frequency (Internal & External)
DC – 100 kHz
Overshoot
< 35% Typical for Fast Rise Time
Polarity
High Impedance Mode: Active High or Active Low
Low Impedance (50 Ω) Mode: Active High Only
Pulse Width Range
High Impedance Mode: 10 ns to DC
Low Impedance (50Ω) Mode: 10 ns to 10 seconds
Max Current
35 mA (Hi-Z @10 ms width)
900 mA (50 Ω @ 10 ms width)
AT45 NOTE:
* Due to the power consumption and heat restrictions, a maximum of four AT45 channels can be installed on a single unit
** Deletes TTL and ADJUSTABLE mode selection and replaced by LOW and HIGH Impedance selection
Option IL82 or Option IL130 - Optical Inputs
Wavelength
Maximum Signal Rate
5 MBd
Maximum Link Dist.
1.5 km
Connector Type
ST
Insertion Delay
< 300 ns
Jitter
< 1.4 ns RMS
System Options
Option
Description
DT15
Dual Trigger. Enable Gate Input to act as a second trigger
COM
Extended Communications – Adds Ethernet & GPIB
EU
Replace North American Cord with European Cord
525 GUI Main WIndow
Custom Model 577 with Channel G and H as Optical Outputs, and Optical Trigger and Gate Inputs
Description
P/N6923
Model 577 19″ Rack Mount
P/N6978
Model 577 19″ Dual Rack Mount
Downloadable resources such as datasheets, firmware, software, drivers and products manuals. Alternatively, you can browse resources directly by visiting our downloads page.
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Yes. The Model 577 is customizable using the ‘Ordering Chart’. Select how many channels you would like for options such as high power outputs, optical isolation, impedance matching, etc. Channels are paired.
