| xPC Target | |
The PCI-CTR05 has one AM9513A chip with 5 counters.
The PCI-CTR05 FM driver programs the AM9513A for FM (Frequency Modulation) signal generation (a square wave with fixed duty cycle and variable frequency). For the corresponding counter channel, the PWM signal is output at the pin named OUT.
Scaling Input to Output
| Hardware Output |
Block Input Data Type |
Scaling |
| TTL |
double |
0 to 1 |
Driver Block Parameters
Counter -- From the list, choose 1, 2, 3, 4, or 5 to select which counter is used with this driver block. In each case, one block is needed for each counter.
Frequency base -- From the list, choose F1=1MHz, F2=100kHz, F3=10kHz, F4=1kHz, or F5=100Hz to set the base frequency. XTAL frequency is assumed to be 1MHz, therefore the jumper on the CIO-CTR05 has to be in position 1MHz not 5MHz.
Output duty cycle -- Enter a value between 0 and 1 to set the duty cycle of the square wave. The Duty Cycle is held fixed during execution of the target application.
Level sequence of square wave -- From the list, choose either high-low or low-high.
high-low, the square wave period starts with the TTL high part followed by the TTL low part.
low-high, the square wave period starts with the TTL low part followed by the TTL high part.
In either case, the duty cycle entering the block defines the duration of the TTL high part.
Level when disarmed -- From the list, choose either high or low. The counter is automatically disarmed when the target application is not running and gets armed when the application begins running. This parameter sets the TTL level when the counter is disarmed.
Sample time -- Enter the base sample time or a multiple of the base sample time. The sample time indicates the update rate of registration on the input (Duty Cycle)
PCI Slot (-1:autosearch) -- Enter a number between -1 and n. If only one board of this type is physically present in the target PC, enter
If two or more boards of this type are physically present in the target PC, enter the bus number and the PCI slot number of the board associated with this driver block. Use the format [BusNumber, SlotNumber]. To determine the bus number and the PCI slot number, type
| | PCI-CTR05 Counter PWM & ARM | PCI-CTR05 Counter FM & ARM | |