Fidelity Measurement AFM18, Operation Manual

Page: 17 / 78

16
www.fi-measurement.com
4.3.7 Connecting Devices by Others to TTL Comport
Follow the below TTL COMPORT PIN ASSIGNMENT TABLE for pin
assignment.
This instrument provides low-active TTL signals. Do not connect the wireless
data communication port to any other non-TTL devices; this may cause
unrecoverable damages to this instrument.
TTL COMPORT PIN ASSIGNMENT TABLE (LOW-ACTIVE)
TTL / WIRELESS DATA COMPORT
WIRELESS DATA
COMMUNICATION MODULE OR
DEVICES
2 = RXD 3 = TXD
3 = TXD 2 = RXD
5 = GND 5 = GND
9 = +5V Output 9 = +5V Input
Notes: -
1. Default setting of wireless data communication = send only. Position of
jumper J1 on main board needs to be changed in order to trigger
wireless data communication receive function (if it is the case, receive
function of the RS232 comport will then be disabled). Contact your
dealer for more information.
2. This instrument supports bi-directional data for either the RS232
comport or the TTL comport. Default setting of: -
•
RS232 = bi-directional,
•
TTL comport = single direction (transmission only).
If bi-directional TTL data communication is required, adjust jumper setting on
board. On board jumper setting may be required, refer to Appendix A
Bi-Directional Communication Jumper Setting for detailed information.
4.4 Setting up the Preferred Operation Parameters
Set all preferred operation parameters according to 5.4 Internal Function
Table .