User's Manual

Digital ATSC Exciter-Modulator System Chapter 2,
Installation and Operating Instructions
Axcera Axciter, Rev. 0 8
Figure 2-6: HX or LX Driver/Amplifier Chassis Assembly, Rear View
Table 2-1. Interconnections between modulator and upconverter (Tray Based System)
MODULATOR TRAY UPCONVERTER TRAY LEVEL CONNECTOR
(J2) IF input (J3) IF output 0 dBm 50Ω BNC
(J4) RS-485 serial 1
data
(J9) RS-485 serial data N/A RJ-45
(J7) RF SW1 output (J12) RF SW CONT input N/A RJ-12
(J12) 10 MHz output (J1) 10 MHz input 3 dBm 50Ω BNC
(J15) 1GHz output (J2) 1GHz LO input 13 dBm 50Ω BNC
(J40) IF output (J5) IF input -12 dBm 50Ω BNC
Table 2-2. Interconnections between modulator and driver/amplifier (Sled Based System)
MODULATOR TRAY DRIVER/AMPLIFIER LEVEL CONNECTOR
(J2) IF input (J13) IF output 0 dBm 50Ω BNC
(J7) RF SW1 output N/A RJ-12
(J12) 10 MHz output (J10) 10 MHz input 3 dBm 50Ω BNC
(J15) 1GHz output (J40) 1GHz LO input 13 dBm 50Ω BNC
(J40) IF output (J6) Modulated IF input -12 dBm 50Ω BNC
Table 2-3. Connections between modulator, upconverter, and external equipment
(Tray Based System)
MODULATOR TRAY UPCONVERTER TRAY LEVEL CONNECTOR
(J27) SMPTE 310 input
#1
N/A
75Ω BNC
(J4) RF input (Normally
jumpered to J24)
-5 dBm
Typical
50Ω BNC
(J8) RF output
Level depends
on transmitter
output power
50Ω BNC
On/Off
Circuit
Breaker