DAP-Specific Features of DAPL

# Features of DAPL 3000 Dependent on DAP Model

This listing covers the following models:

xDAP 7400 |
xDAP 7410 |
xDAP 7420 |

1. ### Input Operating Voltage Ranges

   The input voltage range is fixed. Within that range, the operating differential range is software-programmable.

   Model | Nominal Input Range
   --- | ---
   xDAP 7400 | -10V to +10V
   xDAP 7410 | -10V to +10V
   xDAP 7420 | -10V to +10V

2. ### Input Sampling — Differential Analog Voltage Range

   The input voltage ranges are software-programmable. These full-range input intervals yield values spanning the full digitized output range.

   Model | -0.1 to +0.1 | -0.2 to +0.2 | -0.5 to +0.5 | -1.0 to +1.0 | -2.0 to +2.0 | -5.0 to +5.0 | -10.0 to +10.0
   --- | --- | --- | --- | --- | --- | --- | ---
   | (gain 100) | (gain 50) | (gain 20) | (gain 10) | (gain 5) | (gain 2) | (gain 1)
   xDAP 7400 | x | x | x | x | x | x | x
   xDAP 7410 | x | x | x | x | x | x | x
   xDAP 7420 | x | x | x | x | x | x | x

3. ### Input Converter Precision

   Model | Precision
   --- | ---
   xDAP 7400 | Rounded to 16 bits
   xDAP 7410 | Rounded to 16 bits
   xDAP 7420 | Rounded to 16 bits

4. ### Channel selectors

   The number of selector channels determines the maximum number of input sources that can be captured or digitized simultaneously. Hardware pin mappings determine which pins are electrically routed to which channel selectors. This hardware is not reconfigurable. For maximum parallelism in data capture, route signals through as many of the channel selectors as possible.

   Model | Selector channels available | Selector addresses
   --- | --- | ---

   xDAP 7400

   8

   default
   0. D0, D1
   1. D2, D3
   2. D4, D5
   3. D6, D7
   4. D8, D9
   5. D10, D11
   6. D12, D13
   7. D14, D15

   xDAP 7410

   8

   default (C0:)
   0. D0, D1
   1. D2, D3
   2. D4, D5
   3. D6, D7
   4. D8, D9
   5. D10, D11
   6. D12, D13
   7. D14, D15

   legacy 1 (C1:)
   0. D0
   1. D1
   2. D2
   3. D3
   4. D4
   5. D5
   6. D6
   7. D7

   legacy 2 (C2:)
   0. D0
   1. D1
   2. D2
   3. D3
   4. D4
   5. D5
   6. D6
   7. D7

   xDAP 7420

   8

   default (C0:)
   0. D0, D1
   1. D2, D3
   2. D4, D5
   3. D6, D7
   4. D8, D9
   5. D10, D11
   6. D12, D13
   7. D14, D15

   legacy 1 (C1:)
   0. D0
   1. D1
   2. D2
   3. D3
   4. D4
   5. D5
   6. D6
   7. D7

   legacy 2 (C2:)
   0. D0
   1. D1
   2. D2
   3. D3
   4. D4
   5. D5
   6. D6
   7. D7

5. ### Number of Differential Analog Input Signal Pins

   Model | Differential input pin-pairs available
   --- | ---
   xDAP 7400 | 16 (fixed)
   xDAP 7410 | 16 (fixed) 8 + 8 (optional)
   xDAP 7420 | 16 (fixed) 8 + 8 (optional)

6. ### Outputs Ports

   Different models may support clocked or unclocked output ports.

   Clocked output ports (configured by ODEFINE procedure) receive multiple data channels via a predefined OPIPES channel pipe. Unclocked output ports receive data via DACOUT or DIGITALOUT processing.

   Model | Port type | Direction | Lines | Clocked
   --- | --- | --- | --- | ---
   xDAP 7400 | digital | input | 16 | no
   digital | output | 16 | no
   xDAP 7410 | digital | input | 16 | no
   digital | output | 16 | no
   xDAP 7420 | digital | input | 16 | no
   digital | output | 16 | no

7. ### Input Channel List Size (`CHANNELS`)

   The total number of channels defined by SET commands cannot exceed this limit. Input signal pins can be sampled more than once into separate logical channels, so the number of logical channels can exceed the number of physical channels. For differential analog inputs, each channel uses two hardware lines, so the number of input channels also does not correspond to the number of physical wires.

   Model | Maximum channels in channel list
   --- | ---
   xDAP 7400 | 1024
   xDAP 7410 | 1024
   xDAP 7420 | 1024

8. ### Timing Resolution for Capture and Conversion

   Time intervals specified by `TIME` and `SCAN` commands must be exact integer multiples of these time intervals. If some other time interval is specified, the value will be automatically adjusted, which might produce unexpected side effects.

   Model | Sample capture time resolution
   --- | ---
   xDAP 7400 | 0.020 (20 nanoseconds)
   xDAP 7410 | 0.020 (20 nanoseconds)
   xDAP 7420 | 0.020 (20 nanoseconds)

9. ### Sampling Operations Time Interval

   Time intervals between individual sampling/capture operations, as specified by a `TIME` command, must be within these time interval bounds. These limitations are forced by characteristics of the hardware devices. Units are microseconds.

   Model | Minimum | Maximum
   --- | --- | ---
   xDAP 7400 | 1.00 | 10000.00
   xDAP 7410 | 1.00 | 10000.00
   xDAP 7420 | 0.50 | 10000.00

10. ### Channel List Scan Time Interval

    Time intervals for capturing a value for each channel in an input channel list, as specified by `SCAN` command, must be within these time interval bounds. These limitations are forced by characteristics of the hardware devices. Units are microseconds.

    Model | Minimum | Maximum
    --- | --- | ---
    xDAP 7400 | 1.00 | 100000.00
    xDAP 7410 | 1.00 | 100000.00
    xDAP 7420 | 0.50 | 100000.00

11. ### Multiplex settling time interval

    Time intervals between sampling actions must be no smaller than this interval to guarantee that sampled voltages can settle to full accuracy when any channel selector is configured to multiplex signals from different input signal lines. If there is insufficient time for the electrical switching transient to settle after switching, the accuracy of the digitized value is degraded. A violation is diagnosed as a warning rather than a terminating error, because sometimes digitized information at higher speeds remains useful despite loss of resolution. Weak hardware interconnections or signal drivers can further impair settling time.

    Model | Interface ID | Smallest interval, μsec
    --- | --- | ---
    xDAP 7400 | xDAP0004-03 | 1.00
    xDAP 7410 | xDAP0004-03 | 1.00
    xDAP 7420 | xDAP0004-03 | 1.00

12. ### Aggregate Sampling Rate

    Aggregate sampling rate is the sum of sampling rates on all active input channels running concurrently.

    Model | Maximum
    --- | ---
    xDAP 7400 | 8,000,000 (samples/s)
    xDAP 7410 | 8,000,000 (samples/s)
    xDAP 7420 | 8,000,000 (samples/s)

13. ### Accessory Restrictions

    No output expansion for updating

    xDAP 7400
    xDAP 7410
    xDAP 7420

    No input expansion for sampling

    xDAP 7400

    Analog low-density differential input panels only

    xDAP 7410
    xDAP 7420

    No digital counter accessory support (`CTCOUNT, CTRATE` )

    xDAP 7400
    xDAP 7410
    xDAP 7420

14. ### Processing Task Scheduling Intervals (`OPTION QUANTUM` )

    Units are in microseconds.

    Model | Minimum quantum | Maximum quantum
    --- | --- | ---
    xDAP 7400 | 100 | 50000
    xDAP 7400 | 100 | 50000
    xDAP 7420 | 100 | 50000

15. ### Rescue task scheduling (`OPTION RQUANTUM, OPTION RINTERVAL` )

    Experts only, and only if there is time for careful testing!

    Units are in microseconds.

    Model | Minimum RQUANTUM | Maximum RQUANTUM | Minimum RINTERVAL | Maximum RINTERVAL
    --- | --- | --- | --- | ---
    xDAP 7400 | 20 | 1000 | 5000 | 20000
    xDAP 7410 | 20 | 1000 | 5000 | 20000
    xDAP 7420 | 20 | 1000 | 5000 | 20000

DAPL 3000 version 2.00