Uniblitz VMM-T1, Руководство пользователя

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VMM-T1 User Manual 19
VMM-T1 Rear Panel Operator Controls
Please refer to Figure 3.
1. ADDRESS SELECT switch:
Rotation of the 8-position octal rotary switch selects the active RS-232C address of the unit. See
ADDRESS SELECT under GENERAL CHARACTERISTICS .
2. PULSE OUTPUT BNC.
a. Active-low output.
b.
The duration of this pulse is equal to
the duration of the shutter exposure pulse.
c. This output can be used to daisy-chain VMM-T1 units together.
d. A TTL exposure pulse input to the PULSE INPUT BNC will appear at the PULSE OUTPUT
BNC.
e. Note toggling the N.O./N.C. switch will not change the state of the PULSE OUTPUT.
3. RS-232C DB-9 female connector.
Provides access to the VMM-T1 RS-232C interface allowing the user to control input functions
via a computer RS-232C serial port. See
RS-232C DB-9 female under EXTERNAL INPUT
SPECIFICATIONS .
4. TRIGGER INPUT BNC:
a. Opens the shutter on the first pulse trigger edge.
b. Closes the shutter on the next trigger edge.
c. Pulse starts EXPOSURE and DELAY interval sequence.
d. This input operates in conjunction with the GATE INPUT BNC.
e. When the GATE INPUT is active (default selection) the TRIGGER INPUT will be enabled.
f. This input can be set active-high or active-low by FUNCTION switch A. See “ FUNCTION
SELECT ” under GENERAL CHARACTERISTICS .
5. RESET INPUT BNC:
Inhibits VMM-T1 timing functions and both the DELAY and EXPOSURE timers are RESET.
Please note if an open command is sent to the RS-232C input, a RESET command will not clear
the RS-232C output and the shutter will not close. A CLOSE command must be sent to force the
shutter to close. If it is desired to have the shutter close or return to the state as set by the
N.O./N.C. switch with a RESET command the shutter must be opened with a trigger command.
This input can be set active-high or active-low by FUNCTION switch C. See “ FUNCTION
SELECT ” under GENERAL CHARACTERISTICS .
6. GATE INPUT BNC:
a. An active signal present at this input will enable trigger signals presented to the TRIGGER
INPUT BNC. (An unused GATE INPUT is in the active state.)