GE MDS Mercury 3650, Справочное руководство

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180 Mercury Reference Manual 05-4446A01, Rev. E
Mechanical
• Case: Die Cast Aluminum
• Dimensions: 5.715 H x 20 W x 12.382 D cm. (2.25 H x 7.875 W
x 4.875 D in.)
• Weight: 1kg (2.2 lb.)
• Mounting options: Flat surface mount brackets, DIN rail, 19”
rack tray
External GPS PPS Option
Agency Approvals
• FCC Part 15.247 (DTS)—900 model
• FCC Part 90—3650 model
• CSA Class 1 Div. 2, (CSA C22.2-213-M1987 & CSA
C22.2-142-M1987) (UL1604 & UL916)
• IC RSS-210 “Issue 7”
NOTE:
GE MDS products are manufactured under a quality system
certified to ISO 9001. GE MDS reserves the right to make
changes to specifications of products described in this manual
at any time without notice and without obligation to notify any
person of such changes.
6.3 NOTES ON SNMP
6.3.1 Overview
The firmware release described in this manual contains changes to the
transceiver’s SNMP Agent, several new MIB variables, and new Agent
configuration options. This guide reviews the changes and shows how
to properly configure the Agent to take advantage of these new features.
SNMPv3 Support
The updated SNMP Agent now supports SNMP version 3 (SNMPv3).
The SNMPv3 protocol introduces Authentication (MD5/SHA-1),
Parameter Minimum Maximum
Pulse Voltage (logic low)
0 V 1 V
Pulse Voltage (logic high)
1.7 V 10 V
Source Impedance (ohms)
—
200 Ω
Duty Cycle (ton)
0.0001% (1
μ
sec)
50% (0.5 sec)
Operating Frequency
0.99999999 Hz
(-0.1 ppm error)
1.00000001 Hz
(+0.1 ppm error)
Module Clamping Voltage
2.7 V 3.3 V
Module Input Resistance
150 Ω (Vin >2.6 V) 10 k Ω (Vin < 2 V)
Input Hysteresis
7 mV N/A