Microchip MD-01x Evaluation Kit: Features, Pinout, and Configuration Guide

Overview

This document describes the Microchip MD-01x Evaluation Kit, designed for quick and easy connection to and monitoring of Microchip's MD-01x Series Disciplined Oscillator Modules.

The evaluation board features various connectors and jumpers for configuration and operation. The kit is compatible with Microchip's VDOM Monitor 3 software.

[Image: A photograph of the Microchip MD-01x Evaluation Kit board, showing various components, connectors, and jumpers.]

Features

Laptop or desktop computer connection via USB or RS-232.
Easy power hook-up using included AC-DC power supply.
LED Indicators that show module status.
Compatible with Microchip VDOM Monitor 3 Software.
Multiple power and reference input configurations.

Software Compatibility

The MD-01x series modules and evaluation kit are compatible with Microchip VDOM Monitor 3 software. This software supports monitoring and configuration of the module. A user's guide for this software is available on the module product page on Microchip.com.

This software is available for download at no cost. For more information, please contact Microchip.

Allows for real-time view of the module's timing performance and diagnostic parameters.
Transmits commands and queries to the module via a simple interface.
Data is logged and saved in CSV format for further viewing and analysis.
Compatible with Microsoft Windows® 7, 10, and 11.

Included With This Kit

MD-01x Evaluation board assembly
MD-01x mounting hardware
MD-01x Ribbon Cable
USB 2.0 A to Mini-B Cable (1 meter)
Power Supply (15V)

[Notice] One or more MD-01x series modules must be ordered separately from the MD-01x Evaluation Kit. The Kit does not include a module.

Evaluation Board Functions / Pinout

The evaluation board provides access to various functions and connectors for the MD-01x modules. Key connectors and controls include:

Power Input: 13 to 18VDC
User Comm: USB Mini-B
User Comm: RS-232 DB9F [arrow]
Reference Input
Jumper Blocks: J10, J11, J12, J13, J20, J21, J22, J39
RF Outputs: J9 RF Output (Sine), RF Out (HCMOS or Sine)
Other Connectors: J7 Reference Input, J8 GNSS Antenna Input, J3 1PPS Output
Buttons: Reset Button, IRQ/Holdover Button
Indicators: Power Indicator, Unit Status, Unit Locked

Module IO Pinout

Pin	A	B	C	D	E	F
1	+12v	LOCKED	RX	RF OUT (HCMOS)	RESERVED	VCCEXT
2	+12v	IRQ	TX	REF IN	RESERVED	VCCIO
3	GND	GND	STATUS	PPS OUT	RESET	GND

Option Jumpers

Power Supplies

Jumper	Setting	Description
J10 Unit Power Source¹	EXT: External (Module IO Pin F1) REG: Onboard Regulator (default)
J11 VCCIO Voltage Selection²	3.3V: 3.3-volt VCCIO 5.0V: 5.0-volt VCCIO (default)
J12 Regulator Bypass¹	BYP: Onboard Regulator is bypassed REG: Onboard Regulator is not bypassed (default)
J13 Unit Regulator Enable/Disable	DIS: Onboard Regulator is disabled ENA: Onboard Regulator is enabled (default)

Reference Input Driver

Jumper	Setting	Description
J20 Input Load Select	FLT: Floating / high-impedance input load 50: 50-ohm input load (5v maximum) (default)
J21 AC/DC Termination	AC: AC Input Termination DC: DC Input Termination (default)
J22 Input Driver Bypass³,⁴	STR: Reference input is driven by the onboard driver circuit BYP: Reference input is connected directly to the ref input SMA. (None): Reference input is disconnected

HCMOS RF Output

Jumper	Setting	Description
J39 Sine/Square Select	SINE: RF output is routed through a 10MHz sine wave converter SQUARE: HCMOS RF output is routed directly to the RF Out SMA

[Notice] (1) If the onboard regulator is bypassed (via J12 or J10) the user must supply a voltage within the unit's specified operating voltage range. To minimize noise, the onboard regulator should be disabled when bypassed (J13).

[Notice] (2) The VCCIO selection must match the VCCIO specification of the attached unit. Using a 3.3v VCCIO supply with 5.0V VCCIO unit may result in unpredictable behavior and damage to the evaluation board. Using a 5.0v VCCIO supply with a 3.3v VCCIO unit may damage the unit.

[Notice] (3) On units with a single external reference input channel, the input reference driver must be bypassed if the user wishes to connect directly to the unit's J7 Reference Input port.

[Notice] (4) When the reference input driver is bypassed and the reference input port is connected directly to the input SMA (J22 set to BYP), the J20 Load Select should be in the FLT or Not Connected position, as the unit has internal loading already present.

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