DS3800HIMB1B1B | Full Suffix Mark V Precision Analog Card

Description

Product Introduction

The DS3800HIMB1B1B is the high-resolution analog input board with spring-cage terminals and 0.8A fusing on both banks. This board offers 14-bit resolution (4x the steps of a 12-bit board) for precision measurement applications, combined with the wiring speed of spring-cage terminals. The 0.8A fuses provide more headroom than the 0.5A fuses on baseline variants, reducing nuisance trips on long cable runs. The 16-channel capacity and per-channel configurability make it suitable for a wide range of precision analog input applications.

We’ve used the HIMB1B1B in a temperature control application where we needed to measure thermocouple signals with high accuracy. The spring-cage terminals saved about 30 minutes per board compared to screw-clamp, and the 0.8A fuses handled the inrush from the long cable runs without nuisance trips. The 14-bit resolution allowed us to detect temperature changes as small as 0.05°C, which was essential for the process control loop. The board’s performance was exceptional.

Key Technical Specifications

Compatible Replacement Models

Frequently Asked Questions (FAQ)

Q: What’s the advantage of the 14-bit resolution on the HIMB1B1B?
A: The 14-bit resolution provides 16384 steps—4x the steps of a 12-bit board (4096 steps). For a 4-20mA signal, the step size is about 1.2µA, while a 12-bit board provides about 4.9µA. This means the HIMB1B1B can measure more precisely, which is essential for temperature control loops and precision measurement applications.

Q: What’s the advantage of the spring-cage terminals on the 1B1B?
A: Spring-cage terminals use a stainless steel spring to grip the wire—push the wire in and it’s locked. This is faster than screw-clamp (which requires a screwdriver and torque control). Spring-cage is also more resistant to vibration loosening. The 1B1B is the preferred choice for new installations where wiring speed matters.

Q: Does the HIMB1B1B require ferrules for stranded wire?
A: Yes, we strongly recommend ferrules for stranded wire with spring-cage terminals. Stranded wire without a ferrule can splay under spring pressure, leading to intermittent connections. Ferrules provide a solid, round profile that the spring grips uniformly. Use ferrules or solid wire for reliable terminations.

Q: Can I mix 4-20mA and 0-10V signals on the same HIMB1B1B board?
A: Yes, the HIMB1B1B allows per-channel configuration via jumpers. Each channel has a jumper block that selects current or voltage mode. The board supports 4-20mA, 0-20mA, 0-10V, and ±10V inputs. Make sure to set the jumpers correctly for each channel before installation.

Q: What’s the scan rate of the HIMB1B1B?
A: The HIMB1B1B scans all 16 channels in about 30ms. This is slightly slower than the HIMA (25ms) due to the higher resolution ADC. The scan rate is still fast enough for most process control applications. If you need faster scanning, the HIMA’s 12-bit resolution might be more appropriate.

Q: The HIMB1B1B has a 1.3A backplane current draw. Is that higher than the HIMA?
A: Yes, the HIMB1B1B draws 1.3A, which is 0.1A more than the HIMA (1.2A). The extra current is for the higher-resolution ADC and precision reference. The Mark V power supply is rated at 6A on the 5V rail, so the HIMB1B1B is within the limit. If your rack has multiple HIMB boards, check your total backplane current. We recommend keeping total backplane current below 5.5A for margin.

Q: Does the HIMB1B1B have conformal coating?
A: Not by default. The 1B1B suffix indicates spring-cage terminals and 0.8A fusing, not coating. If you need conformal coating for harsh environments, look for a suffix with a “G” (e.g., DS3800HIMB1G1G). The standard HIMB1B1B is suitable for indoor environments. If your plant has high humidity or corrosive conditions, consider a coated variant.

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