user manual
Table Of Contents
- 45 Dual Display Multimeter
- 1. Introduction
- 2. Getting Started
- 3. Operating the Meter From the Front Panel
- 4. Applications
- 5. Operating the Meter Using the Computer Interface
- Introduction
- Preparing the Meter for Operations via the RS-232 Interface
- Preparing the Meter to be Operated via IEEE-488 Interface
- Getting Started With An Installation Test
- How the Meter Processes Input
- How the Meter Processes Output
- Triggering Output
- Service Requests (IEEE-488 Only and Status Registers
- Computer Interface Command Set
- IEEE-488 Capabilities and Common Commands
- Function Commands and Queries
- Function Modifier Commands and Queries
- Range and Measurement Rate Commands and Queries
- Measurement Queries
- Compare Commands and Queries
- Trigger Configuration Commands
- Miscellaneous Commands and Queries
- RS-232 Remote/Local Configurations
- Sample Program Using the RS-232 Computer Interface
- Sample Programs Using the IEEE-488 Computer Interface
- 6. Maintenance
- Appendices

45
Users Manual
3-4
Neither function modifiers (REL, dB, HOLD, and MN MX) nor the manual range mode
can be selected in the secondary display. Measurement ranges in the secondary display
are always selected through autoranging.
Input Terminals
The input terminals, shown in Figure 3-4, are located on the left of the front panel.
The meter is protected against overloads up to the limits shown in Table 3-1. Exceeding
these limits poses a hazard to both the meter and operator.
CAL
ENABLE
V
10A
100
mA
600V CAT I
1000V CAT I
FUSE F1
500 mA
F 250V
POWER
AUTO
2ND
MN MX
RATE
dB
REL
REF# LOCAL
THRESH ADDR BAUD
HOLD
LO
HI
COMP
A
A
V
FREQ
DUAL DISPLAY MULTIMETER
45
V
!
REF
FUSED
COM
V
10A
100
mA
600V CAT I
1000V CAT I
FUSE F1
500 mA
F 250V
!
FUSED
COM
Volts, Ohms, Diode Test Input Terminal
Amperes Input Terminal. For Current Measurements up to
10A continuous (or 20A for 30 sec).
Milliamperes Input Terminal. For Current Measurements
up to 100mA.
Common Terminal. Return Terminal for all Measurements.
Note: Frequency Measurements are Normally taken
from the V Input, although the 10A and
100mA Inputs can be used.
Ω
aam12f.eps
Figure 3-4. Input Terminals