User`s manual
MegaPlus
®
Model ES 1.0
3. CAMERA OPERATION
3.1 Introduction
The MegaPlus camera, Model ES 1.0, does not have any manual controls on the camera itself.
Camera operation is accomplished by commands sent to the camera through a serial data link
from a personal computer (PC). The camera serial data link may be ordered from the factory as
either RS232 or RS422. In either case, the command syntax is the same.
A list of the camera functions, commands and appropriate page numbers follows:
NOTE: The commands can be entered in either upper or lower case.
FUNCTION COMMAND PAGE
Readout Channels RDM 3.2
Mode Command MDE 3.5
Exposure EXE 3.5
Trigger TRS, TRM, TRE 3.6
Transfer Pulse Delay TPD 3.7
Transfer Pulse Width TPW 3.7
Black Level BKE 3.8
Black Level Balance BKB 3.8
Digital Gain DGN 3.9
Gain Balance GAB 3.9
Restore Factory Settings RFS 3.9
Strobe Polarity STP 3.10
Defect Conceal DEF 3.10
Save SAV 3.10
Reset RST 3.10
Display Wedge WDG 3.11
Status Query STS 3.11
Identification Query IDN 3.11
3.2 Serial Communications Protocol
The camera uses a full duplex UART type asynchronous system, using standard nonreturn-to-
zero (NRZ) format (one start bit, eight data bits, one stop bit, no parity). The baud rate is fixed at
9600. The character code is based on the ASCII standard.
The character flow control protocol is XON/XOFF. XON is assigned DC1 (control-Q) and XOFF
is assigned DC3 (control-S). The receiver sends the XOFF character when it wants the sender to
pause in sending data and an XON character when it wants the sender to resume.
The camera will recognize a command as three command characters, followed by a space
character, followed by an argument that consists of one or more characters, ended by the
carriage return and line feed characters. The camera responds to a valid command with a
carriage return and line feed (CR-LF).
The camera will recognize a query as three command characters, followed by the question mark
character, then ended by the carriage return character.
The camera responds to a query with three command characters, followed by a space bar
character, followed by an argument that consists of one or more characters, then ended by a
carriage return and line feed (CR-LF).
91000064-004 Revision A 3-1 USER’S MANUAL