User's Manual

Location Pin Assignment Type Signal Characteristics
5 Unused N/A
6 Ethernet Rx- 5 V differential data
7 Unused N/A
8 Unused N/A
5.2.4
Auxiliary (Aux)/Accessory
This connection supports the analog interface to the SLR 1000 Repeater, which includes audio, station
control, station indicators, and provisions for timing used in various system implementations. Figure 16:
Auxiliary/Accessory Connector
on page 55 shows the location of the pins and Table 18: Auxiliary/
Accessory Connector Callout Legend on page 55 lists the functional characteristics of the
connector’s pins.
Figure 16: Auxiliary/Accessory Connector
Table 18: Auxiliary/Accessory Connector Callout Legend
Location Pin Assignment Type Signal Characteristics
1 Tx Audio 1 Audio Transmit Audio – Nominal input level is 80 mVrms for 60%
deviation with scaling factor set to 100%. 600
Ω input im-
pedance.
2 GPIO 6 Digital Output Logic Low: 0.5 VDC max
Output Logic High: Open Collector with 10 k pull-up to 5 V
Input Logic Low: 0 – 0.8 VDC
Input Logic High: 3.0 – 14 VDC
3 Igition Sense
Control
Controls power to the unit if the internal jumper is config-
ured correctly.
4 Ground
5 GPIO 7 Analog
RSSI Out
Digital
or Ana-
log
Output Logic Low: 0.5 VDC max
Output Logic High: Open Collector with 10 k pull-up to 5 V
Input Logic Low: 0 – 0.8 VDC
Input Logic High: 3.0 – 14 VDC
Analog RSSI:
Typically 0.5 VDC for -120 dBm to 2.7 VDC for -60 dBm
carrier. Variation with carrier level at approximately 50 mV/
dBm.
6 GPIO 9/ *Analog
Input 1
Digital Output Logic Low: 0.5 VDC max
Output Logic High: Open Collector with 10 k pull-up to 5 V
Input Logic Low: 0 – 0.8 VDC
Input Logic High: 3.0 – 14 VDC
Analog: 0 – 5 VDC
Table continued…
MN003557A01-AA
Chapter 5: SLR 1000 Bottom Panel
Send Feedback 55
Preliminary FCC Filing