# Zyfer GPStarplus Receiver

## 1. Synopsis

    Name: zyfer
    Reference ID: GPS
    Serial Port: /dev/zyferu; 9600 bps 8N1

## 2. Description

This driver supports the Zyfer GPStarplus receiver.

The receiver has a DB15 port on the back which has input TxD and RxD lines for configuration and control, and a separate TxD line for the once-per-second timestamp.

Additionally, there are BNC connectors on the back for things like PPS and IRIG output.

## 3. Additional Information

Reference Clock Drivers

## 4. Driver Options

unit number

  The driver unit number, defaulting to 0. Used as a distinguishing suffix in the driver device name.

time1 time

  Not used by this driver.

time2 time

  Not used by this driver.

stratum number

  Specifies the driver stratum, in decimal from 0 to 15, with default 0.

refid string

  Specifies the driver reference identifier, an ASCII string from one to four characters, with default GPS.

flag1 {0 | 1}

  Not used by this driver.

flag2 {0 | 1}

  Not used by this driver.

flag3 {0 | 1}

  Not used by this driver.

flag4 {0 | 1}

  Not used by this driver.

subtype

  Not used by this driver.

mode

  Not used by this driver.

path filename

  Overrides the default device path.

ppspath filename

  Not used by this driver.

baud number

  Overrides the default baud rate.

## 5. Configuration Example

    refclock zyfer

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