Diamond Systems Emerald-MM-4M-XT 4-Port RS-232 and 48 Digital I/O PC/104 Module
Diamond Systems Embedded Test Systems. Current: 0.3 mA (high state).
- Model
- Diamond Systems Emerald-MM-4M-XT
- Calibration
- Available on request
- Price
- $425
- Status
- In stock
- RFQ ref
- Emerald-MM-4M-XT
This unit
The Diamond Systems Emerald-MM-4M-XT is a PC/104 embedded serial and digital I/O module delivering 4 configurable RS-232/RS-422/RS-485 serial ports and 48 channels of digital I/O in a compact form factor. Built around a 16C554 quad UART with 16-byte FIFOs per port, the module supports baud rates to 115.2 kbps standard, with optional 460.8 kbps operation. Engineered for industrial temperature ranges of −40°C to +85°C, it integrates jumper-selectable addressing and interrupt configuration for flexible system deployment.
Technical Specifications Serial Interface
4 ports, configurable via jumpers for RS-232, RS-422, or RS-485
16C554 quad UART with 16-byte FIFO per port
Baud rates: up to 115.2 kbps (standard); up to 460.8 kbps with 7.3728 MHz crystal option
RS-232: 8 signals + ground per port; RS-422: RX+, RX−, TX+, TX−, ground; RS-485: TX+/RX+, TX−/RX−, ground
Dual 20-pin I/O headers (2 ports per header)
120 Ω termination resistors for RS-422/485, jumper-selectable Digital I/O
48 channels organized as 6 × 8-bit ports
Output current: 0.3 mA (high state), 8 mA (low state)
Inverting logic with 10 kΩ pull-up resistors; tri-state on logic 1, driven low on logic 0
Edge detection on 24 lines; independently selectable high/low edge per bit with interrupt generation Electrical & Environmental
Power supply: +5 V only
Operating temperature: −40°C to +85°C Configuration
8 jumper-selectable I/O address combinations; custom addressing available for OEM applications
10 interrupt levels: 2, 3, 4, 5, 6, 7, 10, 11, 12, 15; full interrupt sharing supported
Key Features
Quad UART with independent 16-byte buffering reduces CPU overhead
Protocol flexibility via jumper configuration eliminates board redesign across RS-232/422/485 applications
Edge-triggered interrupts on 24 DIO lines enable real-time event handling
Interrupt sharing conserves ISA interrupt resources in multi-module systems
Industrial temperature range supports extended deployment environments
Typical Applications
Embedded data acquisition in industrial controllers
Multi-port serial concentrators in rugged systems
Real-time digital event monitoring and logging
Distributed I/O in PC/104 stacks
Compatibility & Integration PC/104 form factor; jumper-configurable for legacy and modern ISA interrupt schemes. Interrupt status register supports legacy and contemporary operating systems requiring per-port interrupt identification.
Specifications
| Parameter | Value |
|---|---|
| Voltage / Current Range | '+5V |
Diamond Systems Emerald-MM-4M-XT — Repair & Calibration Service
Aumictech offers NIST-traceable calibration and repair for the Diamond Systems Emerald-MM-4M-XT. Calibration covers analog input channel accuracy and offset at all gain settings, analog output accuracy, digital I/O logic threshold verification, sample rate and timing accuracy, and trigger and synchronization bus functional verification. NI CompactRIO and PXI chassis also undergo backplane trigger line integrity check.. All calibrations ship with a NIST-traceable certificate. Turnaround is typically 1–3 business days after receipt.
Common Diamond Systems Emerald-MM-4M-XT faults: power supply failure (cRIO-9073/9074), C-series slot connector wear, PXI chassis fan failure, GPIB interface failure on VXI controllers, BIOS/EEPROM corruption. NI CompactRIO most common faults are power supply failure on older cRIO-9073/9074 chassis and C-series module slot connector wear from repeated hot-swap cycles. PXI chassis fan failure is the most common wear item — chassis fans are field-replaceable. VXI embedded controllers most commonly develop EEPROM corruption and GPIB interface failure.
Diamond Systems Emerald-MM-4M-XT price
This Diamond Systems Emerald-MM-4M-XT is listed at $425. Calibration is available separately from $450. Contact us for volume pricing or if you need multiple units.
Diamond Systems Emerald-MM-4M-XT calibration cost
NIST-traceable calibration for the Diamond Systems Emerald-MM-4M-XT is $450 (standard — pass/fail certificate and calibration sticker) or $650 (full measured data at every test point, reference standards documented, traceability chain included). Calibration for this instrument covers analog input channel accuracy and offset at all gain settings, analog output accuracy, digital I/O logic threshold verification, sample rate and timing accuracy, and trigger and synchronization bus functional verification. NI CompactRIO and PXI chassis also undergo backplane trigger line integrity check.. Turnaround is 1 to 3 business days after receipt. See full calibration details →
