China Electronics Technology Instruments AV3672 Series, User Manual

Page: 51 / 424

3 Introduction to Use
3.2 Front Panel & Rear Panel
47
Fig. 3.36 Pulse I/O Connector
The pin definition and description are as follows.
Table 3.5 Pin Specifications of Pulse Input/Output Connector
Pin Function description
1~5 intermediate-frequency pulse gate input A/B/C/D/R (TTL)
6, 9, 15 Reference ground
7 Input of pulse synchronization trigger
8 Input of source pulse modulation drive
10~13 Pulse output 1-4 (TTL)
14 Vacancy
8) Ext IF Input connector
As shown in Fig. 3.37, five SMA interfaces are used for external IF input of the vector network. The 2-port model
is marked with A, B, R1 and R2, and the four-port with A, B, C, D and R. Features are as follows:
➢ Input impedance: 50Ω
➢
RF input:
＜
23dBm
➢
DC input:
＜
5.5V
➢
0.1dB compression point: -9dBm
Fig. 3.37 External Medium-frequency Input Connector
9) Automatic test interface connector
As shown in Fig. 3.38, this interface is a 36-pin female connector. The network analyzer and material handler can
exchange signals through this interface to provide a stable and reliable automatic test environment for the user.
Fig. 3.38 Automatic Test Interface Connector
The port is composed of TTL array and has the following electrical features:
a) Input voltage range: -0.5V to 5.5V
High level of TTL: 2.0V to 5.0V
Low level of TTL: 0V to 0.5V
b) Output current/voltage range: -10mA to 10mA