Configuration of the TELEFAST connector
(Original Document)
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At a Glance
The connector is configured by setting the 4 micro-switches located under the SUB D 15-pin connector to the right of this. For the TSX CCY 1128 module, the configuration is limited according to the type of connected encoder.
The diagram below shows the location and function of the 4 micro-switches.
The two micro-switches located on the right must always be in the OFF position. The two micro-switches on the left allow the link performance to be set according to the encoder output characteristics, and dependent upon the distance between the TELEFAST and the encoder.
Positions of the micro-switches: encoder with positive Logic outputs
Encoder with positive Logic outputs, coded GRAY
Type of encoder output
position of the micro-switch
Maximum length encoder/TELEFAST
Max. frequency for changing least significant bit
Logic
Output interface
Code
Positive
  • Totem Pole
  • TTL
  • NPN open collector
Gray
50 meters
75 kHz
Positions of the micro-switches: encoder with negative Logic outputs
Encoder with negative Logic outputs, coded GRAY
Type of encoder output
position of the micro-switch
Maximum length encoder/TELEFAST
Max. frequency for changing least significant bit
Logic
Output interface
Code
Negative
Totem Pole
Gray
50 meters
75 kHz
TTL
100 meters
40 kHz
NPN open collector
200 meters
5 kHz
Positions of the micro-switches: encoder with positive or negative Logic outputs,
Encoder with positive or negative logic outputs, Binary code
Type of encoder output
Positions of the micro-switches
Maximum length encoder/TELEFAST
Max. frequency for changing least significant bit
Logic
Output interface
Code
Positive or negative
Totem Pole
Binary
10 meters
40 kHz
TTL
30 meters
20 kHz
NPN open collector
50 meters
5 kHz