GPS Time and Frequency Systems

CommSync II-D®

Designed, Manufactured,and Supported in the USA

System Features:
Full Redundancy:
Dual GPS Reference
Dual Power Inputs
8 I/O Module Slots:
200+ Hot-Swappable
Option Modules
Dual GPS Receivers:
Civil C/A-Code(L1)and/or SAASM GBGRAM Military C/A-P(Y)-Codes (L1,L2)
User Interface:
Standard RS-232
Optional Ethernet I/O(Telnet, SNMP, NTP)
Keypad, LCD display
Windows GUI:
Zyfer Monitor™
Standard Outputs:
1PPS, 10MHz
Reliability:
Automatic switchover

CommSync II-D Model 407
The CommSync II®-D can provide a wide variety of time and frequency
output signals with 8 I/O Module slots and 200+ available Option
Modules. Utilized as a Primary Reference Source (PRS), theCommSync II-D provides either Standard Positioning Service (SPS) orthe very latest in GPS military technology; SAASM Precision Positioning
Service (PPS) (for authorized users only).
The CommSync II-D delivers all the performance and functionality of theCommSync II in a 2U chassis. The heart of the CommSync II-D is theGPS Time and Frequency (GTF) Module. The GTF is a hot-swappable,
front panel plug-in module (two slots available for redundancy). It is aself-contained module with Quartz Crystal (OCXO) or Rubidium Atomic
oscillator options, as well as Civil or Military GPS receiver options. DualPower Supplies and Reference Modules provide redundancy with
uninterrupted automatic switchover.
Additional I/O slots can be utilized by configuring a slaved
CommSync II-D with Distribution Time and Frequency (DTF) Modules.
Rear Panel View

Optional Expansion Configuration

8 Input/Output
Hot-Swappable Option Module Slots

Power Supply
AC or DC

FEI-Zyfer, Inc.
7321 Lincoln Way Garden Grove CA 92841
Toll-free 888-886-7465
E-mail: sales@fei-zyfer.com
www.fei-zyfer.com

CommSync II®-D Specifications
Output Specifications (a)Frequency Accuracy:
24 Hour Average
Locked to GPS
Holdover (b)GPS Receiver Options

Rubidium Osc.
< 1E-12< 5E-11

Quartz Osc.
< 1E-12< 1E-10

Time Accuracy: - to UTC, for calibrated units.
Rubidium Osc.
Quartz Osc.
Locked to GPS< 50ns Peak
< 50ns Peak
Holdover (b)
< 3µs
< 7µs
Short-Term Stability (d) typical:
Allan Deviation
Rubidium Osc.
1 sec
< 3E-1110 sec< 1E-11100 sec< 3E-12Quartz Osc.
< 1E-11< 1E-11< 1E-10Phase Noise (d) typical:
Standard
Low Noise 5MHz
< -90 dBc/Hz< -105 dBc/Hz< -105 dBc/Hz< -130 dBc/Hz< -125 dBc/Hz< -150 dBc/Hz< -135 dBc/Hz< -158 dBc/Hz

1Hz
10Hz
100Hz
1kHz

Standard GPS Receiver - Civil C/A CodeType:
8 - 12 channel, independent tracking
Frequency:
1575.42MHz (L1)Code:
C/A only
Warm Start: < 2 minutes
Acquisition Time:
Cold Start: < 20 minutes
SAASM GPS Receiver (e) - Military P(Y) CodeType:
12 channel, independent tracking
Frequency:
1575.42MHz & 1227.60MHz (L1 & L2)
Code:
C/A and P(Y)
Acquisition Time: Warm Start: < 2 minutes
Hot/Cold Start: see note (f)Keyload Interface: DS-102 (Red/Black-key capable)
Chassis Dimensions
Height:Width:
Depth:
Weight:87 mm (3.50") (2U)
438 mm (17.25") (19" EIA Rack)
419 mm (16.0") including connectors
27 lbs. (max.)

Power Options

Environmental

Several Power Input options are available, which include
single or dual Power Supply Modules (for redundancy),
115/230 VAC 50/60 Hz, 24 VDC, 48 VDC, or a combinationof AC and DC Power Input modules.

Operating Temperature:
Rate of Change:
Storage Temperature:
Relative Humidity:
Altitude, Operating:
Altitude, Storage:

Input/Output GTF Front Panel (All Models)

Input/Output GTF Front Panel (SAASM only)

1PPS, 50Ω, TTL level, SMA, Ext. Sync Input
RS-232 I/O connector
10MHz, 50Ω, TTL level, SMA connector
1PPS, 50Ω, TTL level, SMA connector

Keyload Interface - DS-102 (Red/Black key)
Hot Start connector
Zeroize Button

0°C to 50°C
10°C / Hour
-40°C to +85°C
5% to 95%, non-condensing-60m to 4000m-60m to 9000m

Notes:(a) After 24 hours of GPS locked operation, fixed antenna location, antenna delays entered.
(b) After 48 hours of continuous operation.
(c) 2σ (95.5% probability).
(d) Detailed specifications for various output modules: See "Option Module User's Manual 385-8003".
(e) The sale of SAASM receivers is restricted to users authorized by the U.S. Department of Defense.
(f) Dependent on the accuracy of initialization parameters from PLGR or DAGR handheld military GPS receivers, or other initialization devices.

FEI-Zyfer, Inc. is an ISO 9001 certified company.

FEI-Zyfer, Inc.
7321 Lincoln Way Garden Grove CA 92841
Toll-free 888-886-7465
E-mail: sales@fei-zyfer.com
www.fei-zyfer.com© 2010 FEI-Zyfer, Inc. 407-8006C 1008