Upgrading Firmware; Automatic Power-Down - ashtech ZY-12 Information Supplement

Figure 1.4 below lists pin assignments.
Pin Number
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
Port A/B is configured for full handshake, while port C/D is not.

Upgrading Firmware

The receiver can be upgraded with new firmware without opening the unit. The
receiver contains flash EPROMs which can be uploaded with new firmware from
your computer. Updates are shipped on a 3 ½-inch disk accompanied by
appropriate instructions. Contact Customer Support for more information.

Automatic Power-Down

The receiver automatically turns itself off if input voltage drops below 10 volts. A
beep sounds to indicate low battery, at which time you must shut down and
connect a fresh battery.
General Information
Table 1.4. RS232 Connector Pin-Out
Description
Ground
Transmit data port A/B
Receive data port A/B
Request to send port A/B
Clear to send port A/B
Data set ready port A/B
Ground
Data carrier detect port A/B
Data terminal ready port A/B
+5 VDC
Ground
Transmit data port C/D
Receive data port C/D
Request to send port C/D
Clear to send port C/D
Abbreviation
GND
TXD0
RXD0
RTS0
CTS0
DSR0
GND
DCD0
DTR0
+5V
GND
TXD2
RXD2
RTS2
CTS2
7