CommSync II® Model 385
CommSync II is a fully-redundant modular time and frequency system combining dual GPS receivers, oscillators, and up to 13 output option modules in a single 3U chassis. The heart of the system is the GTF (GPS Time and Frequency) reference module, a hot-swappable, front panel plug-in module (with two slots available for redundancy). It is a self-contained module with Quartz Crystal (OCXO) or Rubidium Atomic oscillator options, as well as Civil, SAASM/M-Code MPE-S GB-GRAM, or SAASM/M-Code Force 22E MRU GPS receiver options. Dual Power Supplies and Reference Modules can provide redundancy with uninterrupted automatic switchover.
- Description
- Output Specs (a)
- GPS Receiver Options
- Input/Output
- Power Options
- Chassis Physical Dimensions
- Environmental
- Notes
Description
PRODUCT DESCRIPTION
Utilized as a Primary Reference Source (PRS), the CommSync II provides either Standard Positioning Service (SPS) GPS or the very latest in GPS military technology – SAASM/M-Code Precision Positioning Service (PPS) GPS receivers (for authorized users only).
With GPS as the reference source, the CommSync II provides a frequency accuracy of 1E-12 and a time accuracy of < 50 ns Peak to UTC. Additional I/O slots can be utilized by configuring a slaved CommSync II with Distribution Time and Frequency (DTF) modules.
For Monitor and Control functions there is an RS-232 communications port on the front panel of the GTF/DTF module, a front panel keypad and display, as well as optional Gigabit Ethernet plug-in modules providing Telnet, SNMP, PTP v2 (1588-2008), and NTP. Zyfer™ Monitor (FEI-Zyfer’s remote access utility) provides complete remote control, including system status, setup, alarm logging and user management over a standard TCP/IP connection.
FEI-Zyfer products come with a standard 2 year factory warranty (parts & labor).
SYSTEM FEATURES
- Full Redundancy:
Dual GPS Reference
Dual Power Inputs - 13 I/O Module Slots
Hot-Swappable,
100+ Option Modules - Dual GPS Receivers:
Standard Civil C/A-Code
and/or SAASM/M-Code MPE-S
GB-GRAM or SAASM/M-Code
Force 22E MRU Military - User Interface:
Standard RS-232
Optional Ethernet I/O
(Telnet, SNMP)
Keypad, LCD display - Remote Access Utility:
Zyfer™ Monitor - Standard Outputs:
1 PPS, 10 MHz
(Front Panel) - Calibration:
All units are calibrated with
an in-house standard
traceable to UTC
FREQUENCY ACCURACY
| 24 Hour Average | Rubidium Oscillator | Quartz Oscillator |
| Locked to GPS | < 1E-12 | < 1E-12 |
| Holdover (b) – first 24 hours | < 5E-11 | < 1E-10 |
TIME ACCURACY
| Rubidium Oscillator | Quartz Oscillator | |
| Locked to GPS | < 50 ns Peak | < 50 ns Peak |
| Holdover (b) – first 24 hours | < 3 μs | < 7 μs |
SHORT TERM STABILITY (d) TYPICAL
| Allan Deviation | Rubidium Oscillator | Quartz Oscillator |
| 1 sec | < 3E-11 | < 1E-11 |
| 10 sec | < 1E-11 | < 1E-11 |
| 100 sec | < 3E-12 | < 1E-10 |
PHASE NOISE (d) TYPICAL
| Standard Output | Low Noise 5MHz | |
| 1 Hz | < -90 dBc/Hz | < -105 dBc/Hz |
| 10 Hz | < -105 dBc/Hz | < -130 dBc/Hz |
| 100 Hz | < -125 dBc/Hz | < -150 dBc/Hz |
| 1 kHz | < -135 dBc/Hz | < -158 dBc/Hz |
| Standard GPS Receiver – Civil C/A-Code: | |
| Type: | 8 to 12 channel, independent tracking |
| Frequency: | 1575.42 MHz (L1) |
| Code: | C/A |
| Acquisition Time: | Warm Start: < 2 minutes, Cold Start: < 20 minutes. |
| SAASM/M-Code GPS Receiver – Military P(Y)-Code: | |
| Type: | 12 channel, independent tracking |
| Frequency: | 1575.42 MHz and 1227.60 MHz (L1 & L2) |
| Code: | C/A and P(Y) |
| Acquisition Time: | Warm Start: < 2 minutes, Hot/Cold Start: Dependent on Initialization Device (f). |
| Keyload Interface: | DS-102 |
| FORCE 22E MRU SAASM/M-Code GPS Receiver – Military C/A and P(Y)-Code: (e) | |
| Type: | 24 channel, simultaneous tracking of L1, L2 and C/A codes |
| Frequency: | 1575.42 MHz and 1227.60 MHz (L1 & L2) |
| Code: | C/A and P(Y) |
| Acquisition Time: (c) | Warm Start: < 2 minutes Hot/Cold Start: Dependent on Initialization Device (f). |
| Keyload Interface: | DS-102 |
| with Standard GPS Receiver | with SAASM/M-Code GPS Receiver (e) |
| 1 PPS, 50 Ω, TTL level, SMA, Ext. Sync Input |
1 PPS, 50 Ω, TTL level, SMA, External Sync Input |
| RS-232 I/O connector | RS-232 I/O connector |
| 10 MHz, 50 Ω, TTL level, SMA connector | 10 MHz, 50 Ω, TTL level, SMA connector |
| 1 PPS, 50 Ω, TTL level, SMA connector |
1 PPS, 50 Ω, TTL level, SMA connector |
| Keyload Interface – DS-102 | |
| Hot Start connector |
| Single or Dual Power Supplies, AC or DC or a combination of the two |
| AC Input (115/230 VAC) 90 to 264 VAC, 150 Watts maximum, 47-63 Hz |
| DC Input (24 VDC) 18 to 36 VDC, 150 Watts maximum |
| DC Input (48 VDC) 36 to 76 VDC, 150 Watts maximum |
| DC Input (12 VDC) 11.5 to 18 VDC, 150 Watts maximum |
| DC Input (28 VDC aircraft bus) 22 to 29 VDC, 150 Watts maximum |
| Height: | 134 mm (5.25″) (3U) |
| Width: | 448 mm (17.65) (19″ EIA Rack) |
| Depth: | 381 mm (15.0″) including connectors |
| Weight: | 25 lbs. (max.) |
| Operating Temperature: | 0° C to 50° C |
| Rate of Change: | 10° C/Hour |
| Storage Temperature: | -40° C to +85° C |
| Relative Humidity: | 5 % to 95 %, non-condensing |
| Altitude, Operating: | –60 m to 4000 m |
| Altitude, Storage: | –60 m to 9000 m |
| EMC / EMI: FCC Code of Federal Regulations 47CFR Part 15, Subpart B, Class B |
|
(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) U.S. Government policy restricts the sale of Precise Positioning Service (PPS) equipment to those
authorized by the U.S. Department of Defense. Non-U.S. authorized users must purchase PPS equipment
through the Foreign Military Sales (FMS) process.
(f) Dependent on the accuracy of initialization parameters from PLGR or DAGR handheld SAASM/M-Code GB-GRAM receivers, or other initialization devices.
