Quasonix TIMTER Installation And Operation Manual page 84

TIMTER™ Multi-mode Dual
Telemetry Transmitter
4.2.3.1.13 Mode – MO
4.2.3.1.13.1 STC
When the mode is changed to 13 (STC) on a Dual Transmitter, the active channel settings are automatically copied
to the other channel. This is true regardless of the method used to change the mode (Terminal, Switch Box,
Handheld Programmer, etc.). If MO 13 was issued from channel 1, the transmitter copies channel 1 settings to
channel 2. If MO 13 was issued from channel 2, the transmitter copies channel 2 settings to channel 1. This is
because STC needs both channels to match to function properly. STC is the only mode that is always duplicated on
both channels.
When both channels are set to STC (Mode 13), and one channel is changed to a different mode, both channels are
changed to the new mode. This prevents a situation where one channel is set to STC and the other is not. After that,
if one channel is changed, only that channel is changed, unless the channel is set to 3. When the channel is set to 3,
both channels are changed at the same time, regardless of the mode.
The Dual Transmitter will not enable D2 when in STC mode (Mode 13). If the Dual Transmitter has D2 enabled,
and the mode is changed to 13 (STC), D2 is disabled. STC operation requires both channels to have the same
settings.
4.2.3.1.14 Modulation Scaling – MS
When a mode changes, modulation scaling is reset back to the default for that mode. For example, if the transmitter
is in Carrier mode and MS is 5, then the mode is changed to MHCPM, the MS value is reset to 1. The modulation
scaling value is reset to the default to prevent over-wide modulations/frequency.
4.2.3.1.15 Overtemperature Control – OC
OC is the overtemperature control enable command. The default value is enabled (set to 1).
The transmitter contains an internal thermal shutdown feature that gradually reduces transmit output power up to 6
dB below maximum as the internal temperature rises from approximately 100°C to 108°C. Transmitting
automatically resumes when the temperature falls below these thresholds.
Note: This feature is not production tested and is intended as a last-ditch attempt to prevent damage. Exercising this
feature can only be done by deliberately overheating the unit, which voids the warranty.
Contact Quasonix for the default overtemperature value specific to your transmitter. Refer to the technical guide
"Quasonix Transmitter Overtemp Control Operation" on the Quasonix website for additional information.
4.2.3.1.16 RF Output – RF
RF enables or disables the RF power output from the transmitter. A 1 enables the output and a 0 disables it. If no
parameter is entered, the current state displays.
Note that just turning the RF output on does not guarantee that RF is output. If there is not a valid clock (or in clock
free, if there is no valid data (transitions) from which to derive a clock), then the RF output is Off (unless the unit
has the AC option and the AC command is enabled, in which case a carrier on the current center frequency is
output).
Also, if the unit has an RF On/Off pin that is pulled into the Off state (determined by the current setting of RZ), then
there is no RF output.
Also refer to Appendix C – Understanding Clock/Data, AC, D2, and BR.
4.2.3.1.17 Set Configuration Priority – SC
The SC command sets or shows the current configuration priority setting. When the transmitter is first powered on,
it loads the default configuration from preset 0. Based on the setting of the SC parameter, the transmitter may look
76 Quasonix, Inc.