Description
Product Introduction
The DS3800NHVM1E1C is a premium military-grade version of the high-voltage measurement interface board—the NHVM with military-grade components, extended temperature range, dual-layer UV-resistant coating, and enhanced diagnostics. The suffix tells the story: the first “1” indicates a hardware revision with improved isolation and signal conditioning. The “E” specifies military-grade components with higher-grade capacitors and oscillators. The second “1” adds enhanced diagnostic features. The final “C” is the environmental package: dual-layer conformal coating with UV-resistant topcoat. This board was designed for installations where military-grade reliability, extended temperature range, UV exposure, and better diagnostic feedback were all required.
The military-grade components are rated for longer life at extreme temperatures. The dual-layer conformal coating with UV protection ensures the board survives in outdoor enclosures, coastal installations, or any environment with UV exposure. Compare this to the NHVM1C1C (industrial-grade components). The 1E1C gives you the same basic functionality with military-grade reliability.
Key Technical Specifications
| Parameter | Value |
|---|---|
| Interface Type | High-voltage measurement interface with enhanced diagnostics |
| Voltage Rating | High-voltage (specific ratings depend on configuration) |
| Isolation | Electrical isolation for backplane protection |
| Measurement Inputs | Configurable (depending on configuration) |
| Diagnostic Features | Configuration verification, measurement integrity monitoring, error logging |
| Diagnostic LEDs | Power, Link Status, Measurement Status, Config OK, Fault |
| Conformal Coating | Dual-layer acrylic (MIL-I-46058C) with UV-resistant topcoat |
| Component Grade | Military-spec (Class 3, -55°C to +125°C) with high-grade capacitors |
| Backplane Current Draw | +5V DC @ 0.9A, +12V DC @ 0.4A |
| Operating Temperature | -55°C to +85°C (military-grade) |
| Storage Temperature | -65°C to +125°C |
| Dimensions | 328 mm x 185 mm x 22 mm (full-length Mark IV, reinforced PCB) |
| Mounting | Standard Mark IV rack slot with additional securing clips |
| Configuration | No DIP switches—hardware address fixed |
Compatible Replacement Models
| Model | Compatibility Level | Notes |
|---|---|---|
| DS3800NHVM1C1C | ⚠️ Software Compatible | Industrial-grade components (not military-grade). If you don’t need military-grade reliability, this is a cost-effective alternative. |
| DS3800NHVM1E | ⚠️ Software Compatible | Military-grade components without enhanced diagnostics or coating. |
| DS3800NHVM1E1 | ⚠️ Software Compatible | Military-grade with diagnostics but single-layer coating without UV protection. |
| DS3800NHVM1E1C (this board) | ✅ Drop-in Replacement | No further compatibility notes. This is the board. |
| DS3800NHVD1E1C | ✅ Drop-in Replacement | Similar military-grade high-voltage digital interface—check configuration. |
Frequently Asked Questions (FAQ)
What’s the difference between the NHVM1E1C and the NHVM1C1C?
The “E” suffix indicates military-grade components with higher-grade capacitors and oscillators—rated for longer life at extreme temperatures. The “C” suffix is industrial-grade. Both boards have dual-layer UV-resistant coating and enhanced diagnostics. The 1E1C is for extended reliability in the most demanding conditions.
What’s the “Measurement Status” LED?
The Measurement Status LED indicates the integrity of the high-voltage measurement inputs. The board monitors the measurement signal integrity, checking for noise, drift, or out-of-range conditions. Green means all measurements are valid. Amber means marginal—check the input signal. Red means invalid—check the sensor or wiring.
Do I need to upgrade my DMP firmware for the enhanced diagnostics?
The enhanced diagnostics require DMP firmware v3.0 or later. Older firmware won’t recognize the diagnostic registers. We can provide the firmware EPROMs if you need them.
What’s the voltage rating of this board?
The voltage rating depends on the specific configuration. Check the board’s label or your system documentation for the exact voltage rating.
Can I hot-swap this board?
No. Mark IV backplanes are not hot-swappable. The 1E1C has additional securing clips—make sure they’re properly engaged before powering up.
What’s your warranty and lead time?
We stock the NHVM1E1C in limited quantities. Lead time is 2-3 business days. We offer a 2-year warranty. We test every board with a 48-hour burn-in, a thermal cycle (-55°C to +85°C), and a full diagnostic verification. The test report is included.
Is this board compatible with the Mark VIe?
No. This board is for Mark IV systems only. The backplane architecture is different.

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