Ross 4500DR-104-07, User Manual, Page: 102 / 161

102 • Technical Specifications SRG-4500 User Guide (v7.0)
Frequency Reference Inputs
GPS Receiver Antenna Input
Frequency Reference Outputs
1Hz Frequency Reference Output
Table 9.2 Technical Specifications — Frequency Reference Inputs
Category Performance Requirement Notes
Input Connector Type 1 x 50ohm BNC (terminating)
Input Return Loss >30dB to 10MHz
Inputs 10MHz continuous wave
Input Requirements
Amplitude
1Vp-p (nominal)
2.5Vp-p (maximum) For 1 Vp-p input, Signal Detector has a
0 to -18dB range.
S/N Ratio >40dB
Table 9.3 Technical Specifications — GPS Receiver Antenna Input
Category Performance Requirement Notes
Input Connector Type 1 x 50ohm SMB Jack (terminating)
Input Return Loss >8dB @ 1575MHz
Antenna Voltage +5.0V ±5% Sourced by the SRG-4500
Antenna Current Internally limited to 50mA Sourced by the SRG-4500
Type GPS, L1 Frequency, (1575.42MHz), C/A
Code
12 channels
Time stamp accuracy <=150ns to GPS/UTC
Table 9.4 Technical Specifications — Frequency Reference Outputs (Free Run Mode)
Category Performance Requirement Notes
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 9.5 Technical Specifications — 1Hz Frequency Reference Output (Free Run Mode)
Category Performance Requirement Notes
Output Connector Type 1 x BNC
Output Impedance and
Required Termination
75ohm