25 Locust St, Haverhill, Massachusetts 01830 • Tel: 800/252-7074, 978/374-0761 • FAX: 978/521-1839
e-mail: sales@freqdev.com • Web Address: http://www.freqdev.com
Section 5
32
Model 9002
Remote Control Operation
If D5 = 0, then D4 = 0 for LP and D4 = 1 for HP. D3 - D0 are decoded into a number between 0 and 15.
In the following example, a program is sent to the Model 9002, and it then responds with a four-byte sequence of
data. The program sent is:
If Channel 1 is an 8-pole, 6-zero lowpass Elliptic filter and Channel 2 is a highpass Butterworth filter, then the Model
9002 will send back the following data bytes as displayed in Table 5.12
Table 5.12 Channel Definition Data Sent Back
5.4.6 - Code $0E - Send Back Clip Status
Special Code $0E is a one-byte instruction which sets the Model 9002 up to send back signal clipping data. The
Model 9002 must be set up as a talker by the remote controller to send back the data. It sends back three bytes of
data which represent the clipping status of Channels 1 and 2.
Table 5.13 Clip Status Definition
A remote control sequence to request clipping data is:
Code Function
$11 Start of Program
$0D Codes $0D. Send back Channel Definition
$13 End of Program
Byte # Hex Description
Byte 1 $04 # of bytes being sent back
Byte 2 $0D Identification of special code
Byte 3 $01 Channel 1 coded definition
Byte 4 $10 Channel 2 coded definition
Byte # Hex Description
Byte 1 $03 Number of codes being sent back
Byte 2 $0E Identification of special code sent back
Byte 3 Clip status of Channel 1 and 2
$00 = Clipping in Channels 1 and 2
$80 = Clipping in Channels 2 only
$40 = Clipping in Channels 1 only
$C0 = No Clipping
Code Function
$11 Start of Program
$0E Codes $0E. Send back Channel Definition
$13 End of Program
To Next Page
Loading...