Ross SRG-4400, User Manual

Page: 124 / 193

7–4 • Specifications SRG-4400 User Manual (Iss. 06)
GPS Receiver Antenna Input
Frequency Reference Outputs
1Hz Frequency Reference Output
Table 7.3 GPS Receiver Antenna Input
Category Performance Requirement Reference Information
Input Connector Type
1 x 50ohm SMB Jack (terminating)
Input Return Loss
>8dB @ 1575MHz
Antenna Voltage
+5.0V ±5% Sourced by the SPG
Antenna Current
Internally limited to 50mA Source by the SPG
Type
GPS
L1 Frequency
(1575.42MHz)
C/A Code
12 channels
Time stamp accuracy
<=150ns to GPS/UTC
Table 7.4 Frequency Reference Outputs
Category Performance Requirement Reference Information
Output Connector Type
1 x BNC
Output Impedance and
Required Termination
50ohm
Signal Amplitude
1.0V ± 10%
Rise and Fall Time
5ns > Rise/Fall <44ns 10% to 90%
Jitter
8ns Typically 2ns
Outputs
10MHz continuous wave
Table 7.5 1Hz Frequency Reference Output
Category Performance Requirement Reference Information
Output Connector Type
1 x BNC
Output Impedance and
Required Termination
75ohm
Signal Amplitude
3.3V ±10% TTL CMOS compatible
Rise and Fall Time
5ns > Rise/Fall <44ns 10% to 90%
Jitter
8ns Typically 2ns
Output
1Hz ±5ppm