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參數資料
| 型號： | FTS250 EVAL KIT |
| 廠商： | Connor-Winfield |
| 文件頁數： | 4/8頁 |
| 文件大小： | 0K |
| 描述： | GPS TIMING MODULE EVAL BOARD |
| 產品培訓模塊： | 125 Series GPS Based Timing and Synchronization Products |
| 標準包裝： | 1 |
| 主要目的： | 計時，時鐘發生器，同步器，GPS |
| 嵌入式： | 否 |
| 已用 IC / 零件： | FTS250 |
| 主要屬性： | 1PPS/ 10 MHz 相位校準功能 |
| 次要屬性： | LED 狀態指示器 |
| 已供物品： | 模塊，板，天線，線纜 |
| 其它名稱： | CW687 |
FTS250 Data Sheet #:
SG176
Page 4
Rev:
03
Date:
05/07/13
Copyright 2013 The Connor-Winfield Corp. All Rights Reserved
Specifications subject to change without notice
Input And Output Characteristics
Table 5
LVCMOS Inputs and Outputs
Symbol
Parameter
Minimum
Maximum
Units
Notes
V
IH
HighLevelInputVoltage
1.7
4.0
V
IL
LowLevelInputVoltage
-0.5
0.8
V
OH
HighLevelOutputVoltage
2.4
V
OL
LowLevelOutputVoltage
0.4
V
C
O
OutputCapacitance
10
pF
10 MHz Sine Output
Symbol
Parameter
Typical
Units
Notes
Load
50
ohms
OutputPower
9
dB
m
TotalHarmonicDistortion
2.2
%
GPS Receiver Specifications
Table 6
Parameter
Specifications
Notes
Acquisition/TrackingSensitivity
-155dBm/-156dBm
AcquisitionTime:
HotStartw/NetworkAssist Outdoor:<2sec
Indoor:(-148dBm)<5sec
StandAlone
Cold:<45sec
Warm:<38sec
Hot:<5sec
Re-acquisition:<1sec(90%confidence)
SupportedProtocols
NetworkAssist,NMEA0183
Reset Generation (I/O pin 3 - RESET)
The power-on-reset for the FTS250 is generated on-board. If it is desired to extend the power-on-reset signal or provide a manual
reset of the GPS receiver, pull this signal low.
Mode Control Table
Table 4
* Note: Holdover is not supported in this mode; loss of the 10MHz reference will rail the
PLL output until the reference returns or another mode is selected.
SYNC 1
SYNC 2
Operating Mode
0
Force Holdover
0
1
Lock to External 10 MHz reference*
1
0
Lock to External 1 PPS reference
1
(Default) Lock to GPS Signal
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