DNF Controls ST100 Shuttle Box - Manual (Page 5)

5 ST100 Shuttle Box
4. OPERATION
Select the desired transport function by pressing the appropriate switch on the front of the ST100.
The Real-Time Status Indicators will light to indicate the VTRs current tape transport mode.
For example:
Pressing PLAY will put the VTR into the PLAY mode.
The PLAY Status Indicator will light when the VTR is in PLAY mode.
Loss of serial communication with the VTR is indicated by ALL status LEDs turned ON.
Selecting LOCAL control on the VTR's front panel will turn OFF all status LEDs.
a. SHUTTLE BOX OPERATION
The Shuttle Box automatically determines whether the ST100 or second controller gets
control of the VTR using the following rules:
1)
Normally, the LOOP-THRU is turned on, allowing the second controller to
control the VTR.
2)
When any function switch is pressed on the ST100 or the Wheel is moved, the
LOOP-THRU is turned off, disabling the second controller. The ST100 now has
control of the VTR. After the selected function is executed, and after a 2.5
second delay, the LOOP-THRU is again turned on, allowing the second
controller to control the VTR.
3)
When the LOOP-THRU is turned on, the ST100 monitors communications
between the VTR and second controller. The VTR’s status response is read by
the ST100 and the status indicators are updated to reflect the current state of the
VTR.
b. LOOP-THRU CONNECTOR
RS422 Serial Interface 9-Pin D-Type, Female
Pin #
1 Frame Ground
2 Transmit AÎ
3 Receive B Í
4 Receive Common
5 Spare
6 Transmit Common
7 Transmit BÎ
8 Receive A
Í
9 Frame Ground
c. RECORD MODE
Four (4) Record modes are available:
Crash Record (Full Record), Assemble Record, Insert Record and Record Lockout.
Press only the [RECORD] switch to activate the selected Record mode.
The Record Status Indicator will light when the VTR is in RECORD mode.
NOTE: The VTR will not go into Record mode if "Record Inhibit" is enabled on the
VTR or tape cassette.