DS3800HFXC | 8-Channel 100kHz Pulse Generator Board

Description

Product Introduction

The DS3800HFXC is the high-frequency version of the pulse output board—it extends the frequency range from 10kHz to 100kHz, making it suitable for applications that require higher pulse rates. This board generates 24V DC pulses at frequencies up to 100kHz, with 12-bit resolution and ±0.1% accuracy. It’s used for driving high-speed counters, simulating encoder signals, or generating pulse trains for advanced control applications. The 8-channel capacity provides flexibility for multi-channel applications.

We’ve used the HFXC in a test application where we needed to simulate a high-speed encoder signal for a turbine control system. The 100kHz range allowed us to generate pulse rates that matched the encoder’s output, enabling full-speed testing of the controller’s position and speed algorithms. The 24V DC outputs matched the encoder’s voltage, and the board’s accuracy ensured the simulated signal was within spec. The HFXC is a practical choice for applications that require higher pulse rates than the HFXB can provide.

Key Technical Specifications

Compatible Replacement Models

Frequently Asked Questions (FAQ)

Q: What’s the difference between the HFXC and the HFXB?
A: The HFXC has a higher frequency range (0-100kHz) compared to the HFXB (0-10kHz). The HFXC also draws slightly more backplane current (0.9A vs 0.8A). The electronics are otherwise identical. If you need to generate frequencies above 10kHz, the HFXC is the board to choose.

Q: Can I use the HFXC to simulate a 60Hz turbine speed signal?
A: Yes, the HFXC can generate frequencies up to 100kHz, so simulating a 60Hz turbine signal is well within its capability. You can set the output frequency to match the sensor’s expected output (e.g., 60Hz × number of teeth). The 12-bit resolution provides fine frequency control.

Q: What’s the output current capacity of the HFXC?
A: The HFXC outputs 0.5A per channel maximum. If you need to drive higher-current loads, you’ll need an external amplifier or a different board. The 0.5A rating is typical for frequency output boards.

Q: How do I program the frequency on the HFXC?
A: The frequency is set by the Mark V controller. The controller sends a frequency value to the HFXC via the backplane, and the board generates the corresponding pulse output. The specific register mapping is in GE’s application manual (GEI-100875). You’ll need to configure the Mark V to output the appropriate frequency values.

Q: The HFXC has a 0.9A backplane current draw. Is that higher than the HFXB?
A: Yes, the HFXC draws 0.9A, which is 0.1A more than the HFXB (0.8A). The extra current is for the higher-frequency output stage. If your rack is near the power supply limit, this small increase could be significant. The Mark V power supply is typically rated at 6A on the 5V rail. If you have multiple HFXC boards, check your total backplane current. We recommend keeping total backplane current below 5.5A for margin.

Q: Does the HFXC have conformal coating?
A: Not by default. The HFXC’s suffix typically indicates termination type, not coating. If you need conformal coating for harsh environments, look for a suffix with a “G” (e.g., DS3800HFXC1G1G). The standard HFXC is suitable for indoor environments. If your plant has high humidity or corrosive conditions, consider a coated variant.

GE DS200TCEBG1A
GE DS200TCEBG1B
GE DS200TCPAF1AAB