User manual

10.3 Commercial SITOR CCIR 476/625 Commands
19
© 1999 SGC Inc
SGC Inc. SGC Building, 13737 S.E. 26th St. Bellevue, WA. 98005 USA
P.O.Box 3526, 98009 Fax: [phone] or 746-7173 Tel: [phone] or 1-800-259 7331
E-mail: [e-mail] Web site: http://www.sgcworld.com
Command Description
TAF Test AFSK. Each time TAF is entered, the next state in the mark-
space-mute cycle is activated.
TAT Test/display Pactor status.
TIN Test interrupt system. The Pactor modem interrupts the control
processor at 1 millisecond intervals – this command counts 1000
interrupts and thus prints a message each second. Used for engineer
ing purposes.
TPF Prints out flags and other operational parameters:
Our ID
Remote ID
Unproto rate
Unproto repetitions
Tx Delay
RadioPort
InputGain
OutputAttenuation
ppmCorrection
TT+ increases the timing correction parameter by the equivalent of 1
ppm.
TT- reduces the timing correction parameter by the equivalent of 1 ppm.
Command Description
HELP List all the command-mode commands
Q shuts down and exits the 625 mode in an orderly fashion
SAB sets the answer back string. This may be empty if the answerback
needs to be disabled.
SAR initiates an ARQ call. Station ID and SELCAL need to be set up pre
viously and cannot be changed on the fly. Set ID with SID, SEL
CAL with SEL commands respectively. TNC returns to "dead" when
link terminates normally, or when there is a failure at ARQ phasing,
channel free check, or rephasing attempt fails. ARQ calling will be
using CCIR625 protocol when the previous SEL command set a 9-
digit call.
SBY enters standby mode where TNC waits for FEC, SELFEC, or ARQ
calls.
SCW sets the CW-id. May be empty if the CW-id is disabled.
SDI sets the allowable signal distortion level. Progressive levels above
zero (up to 5) will tighten the margin on when the limits of accept
able distortion will be reached and RQ's will be issued.
SDY Tx delay (# x 8.3 ms) Default = 2 (16.6 ms)