Remote/Local, RL1
You can control the counter manually (locally) from the
front panel, or remotely from the controller. The LLO, lo-
cal-lock-out function, can disable the LOCAL button on
the front panel.
Parallel Poll, PPØ
The counter does not have any parallel poll facility.
Device Clear, DC1
The controller can reset the counter, forcing it to default
settings, via interface message DCL (Device clear) or
SDC (Selective Device Clear).
Device Trigger, DT1
You can start a new measurement from the controller
via interface message GET (Group Execute Trigger).
Bus Drivers, E2
The GPIB interface has tri-state bus drivers.
Connecting the Controller
The bus interface connector is on the rear panel of the
counter. If your counter does not have any connector,
you must install the GPIB-interface option.
Connect the controller via an IEEE-488 cable to the bus
connector. If you use IEC-625 cables, an adapter is
available, see ordering information at the end of this
manual.
Giving the Counter an Address
The counter must have a unique address so that the
controller can communicate with it. The address is se-
lected by setting switches to the binary equivalent of the
address you want. The switches are located to the right
of the interface connector. The OFF position means 0
and the ON position means 1.
Ad-
dress
Switch
settings
Ad-
dress
Switch
settings
Ad-
dress
Switch
settings
0
00000
10
*
01010
20
10100
1
00001
11
01011
21
10101
2
00010
12
01100
22
10110
3
00011
13
01101
23
10111
4
00100
14
01110
24
11000
5
00101
15
01111
25
11001
6
00110
16
10000
26
11010
7
00111
17
10001
27
11011
8
01000
18
10010
28
11100
9
01001
19
10011
29
11101
30
11110
*
Factory setting.
NOTE: 31 is the bus command for "Untalk" and should
not be used. If 31 is selected the counter will
work as if address 0 is selected.
Talk-Only
The leftmost switch in the address switch block is the
TALK ONLY switch. If you set it to ’1’, the counter will
output measurement results on the bus continuously. It
will not react to any incoming commands.
This setting may only be used if the counter is con-
nected to a ’Listen only’ device such as a printer. Set the
switch to ’0’ when you want normal bus communication.
Talk only is set to ’0’ on delivery.
The counter is now ready for bus control.
Checking the Communication
To check if the counter and the controller can communi-
cate, address the counter and execute the following se-
quence: (The programming example is for an HP-85
controller.)
Type on Controller:
This Should Happen.
REMOTE 710
The remote indicator should
be switched on.
OUTPUT 710;"ID?"
Ask for the counter identity.
ENTER 710;A$
Input result from counter.
DISP A$
The response on the
display of the controller is
the identity of the counter.
If everything is OK, the counter will identify itself as:
PM6669/YZW/MN
where:
Y =
4 if the counter has an HF-input, otherwise 0.
Z =
3 for MTCXO, otherwise 1
W =
6 (GPIB-bus is installed)
M =
Revision No. of counter firmware
N =
Revision No. of GPIB-bus firmware
10MHz 0.5-15Vrms
EXT REF INPUT
VOLTAGE
SELECTOR
PM 9604
INCLUDED OPTIONS
PM 9605
PM 9607
PM 9608B
IEEE 488 INTERFACE
TALK ONLY
ADDRESS
16 8 4 2 1
ON
OFF
SUPPORTED
FUNCTIONS:
SH1,AH1
T5,L4
SR1,RL1
DC1,DT1
E2
THERMAL FUSE IN
MAINS TRANSFORMER
GPIB connector
Address switch
Figure 8
GPIB connector and address switch, the
numbers above the switches indicate the sig-
nificance of each switch.
Page: 22
GPIB-INTERFACE OPERATION
PM 6669 - OPERATORS MANUAL