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Chapter 4

Specifications

Typical for 25 °C unless otherwise specified.

Specifications in italic text are guaranteed by design.

Counter

Refer to the CTS9513-2 data sheet for complete 9513 specifications and operating modes. The CTS9513-2 data

sheet is available on our web site at www.mccdaq.com/PDFmanuals/9513A.pdf.

Table 1. Counter specifications

Parameter

Conditions

Counter type

9513

Configuration

One 9513 device. Five up/down counters, 16-bits each.

Compatibility

5V/TTL

The 9513 device is programmable for:

Clock source

Software selectable:

External:

 Counter 1-5 clock inputs

 Counter 1-5 gate inputs

Internal:

 Terminal count of previous counter

 Internal clock frequency scaler (default; divided by 1)

Gate

Software selectable source:

External:

 Active high or low level or edge, counter 1 – 5 gate input

 Active high level previous gate or next gate

 All external gate signals (CTRxGATE) individually pulled up through 47 K

resistors to +5 V.

Internal:

 Active high previous counter terminal count

 No gating (default)

Output

Software selectable:

 Always low (default)

 High pulse on terminal count

 Low pulse on terminal count

 Toggle on terminal count

 Inactive, high impedance at user connector counter # output.

Osc Out

Software selectable source:

 Counter # input

 Gate # input

 Prescaled internal clock (default)

Software selectable divider:

 Division by 1-16 (default = 16)

Clock input frequency

20 MHz max (50 nS min period)

Internal clock frequencies

(Generated from 12 MHz crystal

oscillator.)

Software selectable:

 5.0000 MHz (default)

 3.3333 MHz

 1.6667 MHz

 1.0000 MHz

Internal clock frequency prescaler

BCD scaling (Internal clock divided by 1, 10, 100, 1000 or 10000) or

Binary scaling (Internal clock divided by 1, 16, 256, 4096 or 65536)

Internal clock generator accuracy

±2 ppm

1 2 ... 17 18 19 20 21 22 23 24 25 26 27 28

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