6
Configuration switch setting 1 (and setting 6 for GTR8000 ESS mode)
Fig 1 - Up to 8 equal level RF Outputs
Expansion Port
Config setting 1: Not used (Internally terminated)
Config setting 6: Output to an ESS system when
fitted with an external 10 dB attenuator
Configuration switch setting 2
Fig 2 - 9 equal level RF Outputs
Spectrum Analysis
The signal level entering the station receivers should be checked with a
spectrum analyzer. For best receiver performance all signals in the receive
band should be less than -35 dBm. If any signals are above this level the Input
Gain Attenuator should be increased 1 dB for every 2 dB the receive signal
exceeds -35 dBm. Up to 15 dB attenuation can be set but levels above 6 dB will
progressively reduce system sensitivity. If levels above 6 dB are required
because of interference, alternative ways of reducing the interference should be
investigated so that system sensitivity can be maintained.
Specifications -
Typical at 77
⁰
F (25
⁰
C)
Frequency range
RMC
698 - 960 MHz
TTA
796 - 824 MHz
RMC Gain
-19 to 11 dB min
TTA Gain
25 dB ± 1 dB
System Noise figure
<3.5 dB
Input Gain Atten
0 - 15 dB
Dist Gain Atten
0 - 4 dB
RMC Internal amplifier OIP3
>45 dBm
Input/Output return loss
>14 dB
Test Port path loss
30 dB ± 2 dB
Isolation between RF outputs >20 dB
Alarm Relay contacts
60V/1A DC
Max TTA input signal
10 dBm
Temperature range - TTA
-22 to 140
⁰
F
(-30 to 60
⁰
C)
- RMC
32 to 122
⁰
F
(0 to 50
⁰
C)
Power supply options DC
10 - 18 VDC
18 - 36 VDC
36 - 60 VDC
AC
90 - 264 VAC
Power consumption
32 W
