
38
Base Station Specifications
TB9300 Specifications Manual
© Tait International Limited August 2022
1.8
System Connections
1.8.1
External Frequency Reference Input (BNC)
1.8.2
Ethernet Interface (RJ45)
1.8.3
System Interface (DB-25)
Frequencies
a
10 MHz or 12.8 MHz
Lock range
± 50 Hz
Input level
500 mVpp to 5 Vpp
Input impedance
≥
1 k
Ω
a. Automatically detected by the reciter.
Transceiver
10/100 Base-Tx/Rx (Auto-MDIX)
IEEE-spec
IEEE 802.3 and 802.3u
External General Purpose Digital Inputs
Input low threshold
V
IL
< 0.6 V
Input high threshold
V
IH
> 2.3 V
Internal pull-up (5V)
≥
10 k
Ω
Input source current
I
IL
< 1 mA (V
IL
= 0 V)
Continuous input voltage
|V
IN
| < 30 V
Transient input voltage
|V
IN
| < 35 V (t < 1 s)