TB9400 Specifications Manual Base Station Specifications 33
© Tait Limited July 2017
1.8 System Connections
1.8.1 External Frequency Reference Input (BNC)
1.8.2 Ethernet Interface (RJ45)
1.8.3 System Interface 25-Way D-range
Frequencies
a
10MHz or 12.8MHz
Lock range ±50Hz
Input level 500mVpp to 5Vpp
Input impedance ≥1kΩ
a. Automatically detected by the reciter.
Transceiver 10/100 Base-Tx/Rx (Auto-MDIX)
IEEE-spec IEEE802.3 and 802.3u
External General Purpose Digital Inputs
Input low threshold V
IL
<0.6V
Input high threshold V
IH
>1.2V
Input source current I
IL
<1mA (V
IL
= 0V)
Continuous input voltage |V
IN
| <30V
Transient input voltage |V
IN
| <35V (t <1s)