Effective January 1st 2022, ICE Enterprises will increase all product prices by 20%. Market forces, both rising component cost and increasing material lead time, are requiring the first price adjustment in company history. This price increase will allow ICE Enterprises to continue to design and manufacture quality electronic hardware as has been the case for over two decades. ICE Enterprises will honor all current price quotes and accept orders at existing pricing through the end of December 2021.

ICE-GPS

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GPS Timing Reference Module
ICE-GPS-r1.2-top.jpg
ICE-GPS-r1.2-bottom.jpg

The ICE-GPS is a GPS-driven, mixed-signal phase-lock loop, providing a 1 PPS output, an IRIG-B output, and generating a 10MHz sine output from an extremely low jitter voltage-controlled crystal oscillator (VCXO). The 10MHz output is disciplined from an onboard GPS receiver, which drives the long-term frequency stability. The onboard GPS receiver at the core of the ICE-GPS is the Conner Winfield CW25 timing receiver.

The board is formatted as an ICE I/O module for use with the ICE-PIC6, ICE-POD, or ICE-PAC. The antenna input is available on an SMA connector and will operate an active antenna at 5V. The 10MHz, 1PPS, and IRIG-B are available on SMB connectors, each able to drive four 50 ohm loads.

The ICE-GPS communicates to the host computer through the base ICE card using C-callable library functions. These calls allow access to all NMEA/TSIP protocol information made available by the CW25 module. The user can observe the status of the unit, time of day, position, and current satellite quality/configuration information via either of the two protocols.

Features

  • Stratum 1 time source
  • G.811-compliant
  • Phase-locked 10MHZ output
  • Low 10MHz phase noise (-76db@10Hz, -100dB@100Hz, -126dB@250Hz)
  • Precision 1PPS output locked to 10MHz
  • Commercial temperature (0-70C)
  • SMA connector for GPS antenna input (jumper selectable 5V active or passive)
  • SMB connectors for 10MHz clock, 1PPS, and IRIG-B outputs
  • Single-site module for use with ICE-PIC6 series cards and ICEPOD subsystems

Applications

  • Precision time and frequency reference

Specifications

Input/Output Specifications

Parameter
Minimum Typical Maximum
Units
Analog Input



dBm
Analog Input Impedance

50

Ohms
10MHz Clock Output
.5
1.0
1.0
V p-p
1PPS Output
0
1.0
3.3
V
IRIG-B Output
0
1.0
3.3
V
Output Impedance
12.5
50

Ohms

Notes:

  1. Outputs buffered to drive 1-4 50 ohm loads

Absolute Maximum Ratings

Parameter
Value Units Conditions
Electrical
AVcc
5.0
VDC

DVcc 3.3
VDC

Analog Input Power 10
dBm (50ohm ref)

Clock Output 0 to 5 Vpeak into 50ohm

PPS Output
0 to 5
Vpeak into 50ohm

IRIG-B Output
0 to 5
Vpeak into 50ohm

Environmental
Operating Temperature -10 to +65 Degrees C
Storage Temperature -40 to +85 Degrees C

WARNING: Operation of this module beyond any of these parameters may cause permanent damage. Exposure to absolute maximum ratings for extended periods may affect module reliability. Operation of the module beyond these specified parameters voids the factory warranty.

Example Plots

Close in Phase Noise Performance of ICE-GPS 10MHz sine output


Plot forthcoming...

Connectors

Connector
Manufacturer Part Number Description J-Number
Signal Connections
Analog In
Rt. Angle SMA Connector GPS
10MHz Clock Output
Emerson
131-1701-371 Rt. Angle SMB Connector CLK
1PPS Output
Emerson
131-1701-371 Rt. Angle SMB Connector PPS
IRIG-B Output
Emerson
131-1701-371 Rt. Angle SMB Connector IRB
Board Connection
Data Connection
Samtec
QTE-020-03-F-DA 40 Pin Connector VIO
Power Connection
Standard 2-pin Header VIOP
Physical Connection
Standoff (2 each)

Physical Connection
Mating Connectors
SMB (J2, J3)
Amp
# 414946-1
Huber Suhner
# 11SMB-50-2-40
Data (J4)
Samtec QSE-020-01-F-D-A 40 Pin Connector

ICE Interface Cables

ICE-CAB-SB5 (for J2, J3) 5 ft. BNC to SMB cable
ICE-CAB-SMA (for J1) 5 ft. BNC to SMA cable

Connectors Diagram

Note the connector labels on the image below for reference (from top to bottom: GPS, CLK, PPS, IRB):

ICE-GPS-r1.2-bottom.jpg

Status

This model is in production. For pricing, please see the Pricing page.