Connecting a Modem

To connect a modem to the spectrum analyzer, use the information in Figure C-8. The
connection is for a Hayes 1200 Modem and the spectrum analyzer.
Modem
Allalyzer
TxD
2
RrD
3
RTS 4
CTS 5
DSR 6
GND
7
DCD
8
DTR
20
RI 22
< <
3 TxD
>
>2 RxD
<>7 RTS
\
>8 CTS
<>6 DSR
< <
5 GND
>>1 DCD
<
<
4 DTR
no connection 9 RI
cu140e
System Settings
Figure C-8. 25-pin to g-pin Modem Connection
Select 1200 baud for both the modem and the spectrum analyzer.

Connecting an HP-GL Plotter

‘Lb
connect an HP-GL plotter to the spectrum analyzer, use the information in Figure C-9.
Plotter
Atlalvzer
GND 1
TxD
2
RxD
3
RTS 4
CTS 5
DSR 6
GND 7
DTR 20
<
>
1 GND
>
>3
RxD
<
<
2
TxD
8 DCD
F
*O
DTR
<
7 GND
>>
5 CTS
cul13e

Switch Settings

Figure C-9. HP-GL Plotter Connection
Set the switches on the HP-GL plotter to the following settings. Set the baud rate of the plotter
and spectrum analyzer to the same value. After setting the switch positions, turn plotter off,
then on again.
Switch Position Switch Position
Expand:
4
Parity:
)
(Off)
Emulate:
1
Even/Odd: ) (Odd)
Stand-alone:
4
Duplex: ) (Full)
Monitor Mode:
)
(normal)
Hardwire:
I
Local
)
(normal) DTR-Bypass:
)
(normal)
C-6
M-232
and Parallel Option 043