Specifications

5/9/13 888-2857-001 2-9
WARNING: Disconnect primary power prior to servicing.
Section 2 Installation / Initial Turn-On
Platinum VAX-C Series
2.7 Signal and Sample Connections
This section contains descriptions of signal and sample connections on the rear of the
VAX-C transmitter.
Figure 2-3 VAX-C Rear Panel
2.7.1 Rear Panel Connections
Table 2-2 Rear Panel Connections
Connection Description
GPS (SMA) GPS antenna input to the internal GPS receiver. Provides +5 VDC at 0.15
Amps maximum for an amplified GPS antenna. GPS receiver normal
signal input level is -130 dBm to -100 dBm, its antenna input impedance
is 50 ohms, and its center frequency is 1.57542 GHz.
POST-FILTER
(SMA)
RTAC RF input signal connector for an RF sample from output of high
power filter. It is used by RTAC ™ (Real Time Adaptive Correction) to
correct for the linear distortions of the output filter. Normal input signal
range is -20 to +5 dBm. The input impedance is 50 ohms.
RS232 Female 9 Pin D sub connector. It is used to communicate with various
computer applications.
CAN Female 9 Pin D sub connector. This connector is used for the CAN
(Controller Area Network) interface to some transmitters.
1 PPS INPUT BNC, female connector is the one pulse per second input from an external
GPS receiver. This is a TTL pulse which is typically 100 nsec wide, and
is read at the leading edge. Accuracy requirement is 15 nsec.