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AccuSync®
Model 373 |
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The AccuSync® is a
rack-mount unit that provides highly accurate timing and
frequency output signals synchronized to UTC (Universal
Coordinated Time). The unit is optimized to provide superior
long-term performance for Telecom applications such as PCS
base station synchronization.
The AccuSync® offers third generation technology
proven in “real world” high-volume deployments. The unit
features front panel status indicators for key system
activities. Updating your AccuSync in the future is made
easy with flash memory for remote software updates.
Operation is automatic and self-calibrating. Controlling and
performance monitoring are provided via an RS-232 I/O
interface. |
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Rear Panel View |
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AC
or DC
Power Supply |
RS-232 Ports |
1
PPS, 10 MHz Outputs |
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Accessories |
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Antennas and Accessories |
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Output Specifications |
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 10
MHz Output:
(a,b,c) |
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Quantity: |
5 SMA or SMB
rear panel connectors (model dependent). |
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Accuracy, Time
Locked: |
1E-12 (one day
average) |
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Accuracy,
Coasting: |
1E-10 per day |
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Short Term
Stability (Allan Deviation): |
3E-11 (1 sec) |
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1E-11 (10 sec) |
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1E-10 (100
sec) |
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Wave Shape: |
Sinusoid |
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Amplitude: |
16+1, -2 dBm
into 50 Ω |
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Harmonics: |
-50 dBc |
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Spurious
Level: |
-60 dBc |
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Phase Noise
(dBc/Hz): |
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1 Hz: |
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-85 |
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10 Hz: |
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-115 |
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100 Hz: |
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-135 |
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1 kHz to 100 kHz: |
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-145 |
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1
PPS Output:
(a,b,c) |
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Quantity: |
2 SMA or SMB connectors (model
dependent). |
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Wave Shape,
Width: |
Pulse, 2 ms |
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Level: |
TTL into 50 Ω |
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Synchronization: |
Rising edge
on-time |
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Accuracy,
Time Locked: |
100 ns
referenced to UTC. |
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Accuracy,
Coasting: |
1 μs per
day |
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Output
Jitter: |
1 ns |
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Control
Port: |
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Signal
Levels: |
RS-232C |
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Connector: |
9-pin D-sub |
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Baud
Rate: |
Factory
Default: 19200 |
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Protocol: |
1 Start Bit, 8
Data Bits, 1 Stop Bit, No Parity |
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TOD
Output: |
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Signal
Levels: |
RS-232C |
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Connector: |
9-pin D-sub |
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Baud Rate: |
9600 |
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Protocol: |
1 Start Bit, 8
Data Bits, 1 Stop Bit, No Parity |
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Transmit
Rate: |
Every second
or even second (selectable) |
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Time
Content: |
Years, days,
seconds |
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Time
Reference: |
GPS or UTC
(selectable) |
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GPS
Receiver |
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Standard
GPS Receiver - Civil C/A-Code: |
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Type |
8 channel L1 |
| Connector |
TNC female |
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Power
Options |
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Available
with AC or DC power: |
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AC |
100-260 VAC @ 50-60 Hz, 50W
maximum. |
| DC |
20-53 VDC, 1.2
A @ 20VDC maximum. |
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Chassis Physical
Dimensions |
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Height: |
44 mm (1.75") (1U) |
| Width: |
420 mm (16.5)
(19" EIA Rack) |
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Depth: |
305 mm (12.0")
including connectors |
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Weight: |
4.1 kg (9 lbs.)
maximum. |
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Environmental |
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Operating
Temperature: |
0° C to 55° C |
| Rate
of Change: |
15° C/Hour |
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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,
correct position and antenna delay entered. |
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Ambient temperature change < plus/minus 10° C. |
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(c) 95.0%
probability. |
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GPS
Time and Frequency Systems
Low Phase Noise