SECTION 7
um_tslm rev3.doc
Page 32 of 62
Online Diagnostics
If enabled, diagnostics information is sent at the beginning of each transmission.
Diagnostics information is invisible to user data except for the increase in RTS/CTS
delay of 11ms (at 9600 b/s). The default value is “Enabled” (checked). All units in a
network must use the same setting. Diagnostics from the last 10 stations received are
stored in each unit. These values are read using the Offline or Online Diagnostics
screen.
Transmitted information includes:
•
Short ID
•
Supply Voltage (in Volts)
•
Internal Temperature (in Celsius)
•
Received Signal Strength (in dBm) (RSSI)
Repeater Mode (Extended T1 RTS-CTS)
The Repeater Mode option extends transmitter turn-on time to allow use in a
repeater network. The default value is “Disabled” (unchecked). RTS/CTS delays are
important in system design including a T-96SR/T-Base configuration.
Table 7.1
RTS/CTS Delays
Normal Delay
Repeater
Extended T2
Diag off Diag on
Diag off
Diag on
4800
30 mS
52 mS
60 mS
82 mS
24.4
9600
20 mS
32 mS
40 mS
52 mS
13.8
Extended Turn-off (T2)
An end-of-transmission quiet period approximately 8 characters long can be invoked
on the TSLM by holding its transmitter on briefly after RTS is dropped. This quiet
period (which occurs between the last valid data character and any possible
extraneous “noise” bits) may be of benefit to some DTE that would otherwise be
adversely affected by the extraneous bits.
The Extended Turn-off option extends transmitter turn-off time to enforce a quiet
period at the end of each transmission. Select “Enabled” if data equipment does not
clearly terminate each data frame and is susceptible to extraneous bits (dribble bits)
at the end of data transmission. The default value is “Disabled” (unchecked).
Values are: 4800 b/s = 16 ms; 9600 b/s = 9 ms