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Printer Friendly
Data Sheet (pdf)
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For Information Call
888-886-7465 |
System Features:
 Multiple
Outputs:
1PPS, 5 MHz, 10 MHz
PTTI, IRIG, Have Quick
and 2 Frequency
Programmable Outputs
Ext.
Reference Inputs
1PPS or PTP
GPS
Receiver:
Standard Civil C/A-Code
(L1) Frequency or
SAASM GB-GRAM
C/A-P(Y)-Codes (L1,L2)
Low Phase Noise
NTP
/ PTP v2 Server:
Telnet, SSH, SNMP
MIB II, IPv4 and IPv6
User
Interface
Zyfer Monitor™ GUI
Certification:
All units can be certified
to an in-house standard
traceable to UTC. |
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AccuSync®II Model 405 |
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The AccuSync II incorporates the latest developments in time
and frequency technology including off the shelf support for
IEEE-1588 Precision Time Protocol (PTPv1 and v2) and the
latest civilian C/A and military SAASM GPS receivers.
The design incorporates support for the most common output
requirements including 5 and 10MHz Low Phase Noise (LPN)
frequency references, multiple time references (NTP, IRIG,
Have Quick, TOD) and 1PPS reference output. Additionally, the
AccuSync II provides user defined options such as
programmable DDS Frequency Synthesizer outputs, configurable
IRIG output and multi-use 10/100 Ethernet ports. The system
can also be configured as an PTP Grandmaster or Slave unit
utilizing IEEE-1588.
In the event of GPS signal loss or lack other external
disciplining source, the AccuSync II will continue to
provide accurate time and frequency (holdover) using our
standard high stability crystal oscillator (OCXO). For
customers requiring extended holdover, a Rubidium (Rb)
atomic clock oscillator is available.
The AccuSync II uses the latest FEI-Zyfer proprietary
learning algorithm to compensate for external and internal
reference characteristics that may affect accuracy, ensuring
the most accurate GPS time and frequency reference
available. |
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Rear Panel View |
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1 PPS - 5
MHz - 10 MHz - PTTI - IRIG B - HAVE QUICK - TOD - DDS -
ETHERNET - RS-232 |
AC or DC
Power Options |
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Accessories |
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Antennas and Accessories |
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Time,
Frequency and Communication Inputs / Outputs |
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Qty. |
Description of
Rear Panel Inputs / Outputs |
Conn. Type |
I/O |
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1 |
1PPS
External Reference |
BNC |
Input |
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4 |
1PPS
TTL into 50Ω |
BNC |
Output |
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6 |
10
MHz Sine Wave Output, 13 dBm |
BNC |
Output |
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4 |
5
MHz Sine Wave Output, 13 dBm |
BNC |
Output |
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2 |
DDS
(Freq. Synthesizer) TTL Software programmable 1 kHz
to 50 MHz (in 10 Hz steps) |
BNC |
Output |
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1 |
PTTI
Port: BCD, Have Quick Time, 10 VDC 1PPS and 1PPM |
DE-9S |
Output |
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1 |
IRIG
B Output, user selectable AM or DC shifted |
BNC |
Output |
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1 |
Have Quick
Output, user selectable Have Quick II, Have Quick
PTTI, and Extended
Have Quick |
BNC |
Output |
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1 |
TOD,
Serial I/O, RS-232 with Alarm Status pins |
DE-9S |
Output |
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Communication
and Control I/O |
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2 |
10/100
Ethernet (NTP, PTP IEEE-1588 v2, SNMP, MIB II,
TELNET, SSH, IPv4, IPv6) |
RJ-45 |
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2 |
Control
Ports (1 on Front Panel, 1 on Rear Panel, RS-232C) |
DE-9S |
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Output
Specifications (a,b) |
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 1
PPS Output: |
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Oscillator
Type: |
Rubidium |
OCXO |
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Accuracy(c): |
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GPS Locked: |
< 100ns at 95%
probability to UTC |
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Coasting
(Holdover) (a,b): |
< 3µS @
24hrs |
<
7µS @ 24hrs |
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10
MHz Output: |
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Oscillator
Type: |
Rubidium |
OCXO |
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Accuracy(c): |
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GPS Locked: |
<
1E-12 |
<
1E-12 |
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Coasting
(Holdover) (a,b): |
< 1E-11 |
<
1E-10 |
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Phase
Noise: |
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Oscillator
Type: |
Rubidium |
OCXO |
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1Hz: |
N/A |
-90
dBc/Hz |
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10Hz: |
-100
dBc/Hz |
-125
dBc/Hz |
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100Hz: |
-125 dBc/Hz |
-140 dBc/Hz |
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1kHz: |
-145 dBc/Hz |
-147 dBc/Hz |
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10kHz: |
N/A |
-150 dBc/Hz |
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Short
Term Stability (Allan Deviation): |
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Oscillator
Type: |
Rubidium |
OCXO |
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1 Sec: |
< 3E-11 |
<
1E-11 |
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10 Sec: |
<
1E-11 |
<
1E-11 |
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100 Sec: |
< 3E-11 |
<
1E-10 |
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GPS
Receiver Options |
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Standard
GPS Receiver - Civil C/A-Code: |
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Type: |
12 channel, parallel
tracking |
| Frequency: |
1575.42MHz
(L1) |
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Code: |
C/A |
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Acquisition
Time: |
Warm Start: <
2 minutes, Cold Start: < 20 minutes. |
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SAASM
GB-GRAM GPS Receiver - Military P(Y)-Code (d): |
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Type: |
12 channel, continuous
tracking |
| Frequency: |
1575.42MHz
and 1227.60MHz (L1 & L2) |
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Code: |
C/A and P(Y) |
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Acquisition
Time: |
Warm Start: <
2 minutes, Hot/Cold Start: Dependent on
Initialization Device (e). |
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Keyload
Interface: |
DS-102 (Red &
Black-key) |
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Power
Options |
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AC Power: |
100 - 240 VAC,
50-60 Hz, 60W |
| DC
Power: |
36-72 VDC |
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DC
Power: |
12-36 VDC |
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Chassis
Physical Dimensions |
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Height: |
44 mm (1.75") (1U) |
| Width: |
432 mm (17.00)
(19" EIA Rack) |
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Depth: |
305 mm (12.0")
including connectors |
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Weight: |
10 lbs. (max.) |
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Environmental |
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Operating
Temperature: |
0° C to 55° C |
| Rate
of Change: |
15° C/Hour
(30° C/Hour non-destructive) |
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Storage
Temperature: |
-40° C to
+85° C |
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Relative
Humidity: |
5% to 95%,
non-condensing |
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Altitude,
Operating: |
-60m to 4000m |
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Altitude,
Storage: |
-60m to 9000m |
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Notes |
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(a) After 72 hours of
GPS locked operation, fixed antenna location,
antenna delays entered. |
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Ambient temperature change < plus or minus 10°
C. |
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24 hour average. |
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(d) The sale of
SAASM receivers is restricted to users
authorized by the U.S. Department of Defense. |
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(e) Dependent on the
accuracy of initialization parameters from PLGR
or DAGR handheld SAASM GB-GRAM receivers, or
other initialization devices. |
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GPS
Time and Frequency Systems