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1 bit 4882 compatibility, 2 bit 4886 compatibility, 3 ieee 488 (gpib) bus protocol – KEPCO BOP-GL 1KW Operator Manual Firmware Ver.3.05 and higher User Manual

Page 90: Table 3-8. ieee 488 (gpib) bus interface functions, Bit 4882 compatibility -28, Bit 4886 compatibility -28, Ieee 488 (gpib) bus protocol -28, Ieee 488 (gpib) bus interface functions -28, Ieee 488 (gpib) bus command mode messages -28, Ar. 3.6.3

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3-28

BOP-1K-GL 022814

3.6.1

BIT 4882 COMPATIBILITY.

To replace a standard low power BOP/BIT 4882 card combination with a 1KW BOP-GL with
minimal reconfiguration of existing test setups, send

SYSTem:SET 4882

followed by

MEMory:UPDate INTERFACE

.

3.6.2

BIT 4886 COMPATIBILITY

To replace a standard low power BOP/BIT 4886 card combination with a 1KW BOP-GL with
minimal reconfiguration of existing test setups, send

SYSTem:SET 4886

.

3.6.3

IEEE 488 (GPIB) BUS PROTOCOL

Table 3-8 defines the interface capabilities of the BOP power supply (Talker/Listener) relative to
the IEEE 488 (GPIB) bus (reference document ANSI/IEEE Std 488: IEEE Standard Digital Interface
for Programmable Instrumentation
) communicating with a Host Computer—Controller (Talker/Lis-
tener). Tables 3-9 and 3-10 define the messages sent by the BOP, or received by the BOP, via
the IEEE 488 bus in IEEE 488 command mode and IEEE 488 data mode, respectively. These
messages are enabled during the “handshake” cycle, with the BOP power supply operating as
either a Talker or a Listener. (See PAR. 3.6.3.1 to change the GPIB address.

TABLE 3-8. IEEE 488 (GPIB) BUS INTERFACE FUNCTIONS

FUNCTION

SUBSET

SYMBOL

COMMENTS

Source Handshake

SH1

Complete Capability (Interface can receive multiline messages)

Acceptor Handshake

AH1

Complete Capability (Interface can receive multiline messages)

Talker

T6

Basic talker, serial poll, unaddress if MLA (My Listen Address) (one-byte address)

Listener

L4

Basic listener, unaddress if MTA (My Talk Address) (one-byte address).

Service Request

SR1

Complete Capability. The interface sets the SRQ line true if there is an enabled ser-
vice request condition.

Remote/Local

RL1

Complete capability. Interface selects either local or remote information. In local
mode the BOP enables the analog programming inputs. The unit automatically
enters remote mode (digital control) when the first SCPI command is received.

Parallel Poll

PP0

No Capability

Device Clear

DC1

Complete Capability. BOP accepts DCL (Device Clear) and SDC (Selected Device
Clear).

Device Trigger

DT1

Respond to *TRG and trigger functions.

Controller

C0

No Capability

TABLE 3-9. IEEE 488 (GPIB) BUS COMMAND MODE MESSAGES

MNEMONIC

MESSAGE

DESCRIPTION

COMMENTS

ATN

Attention

Received

DAC

Data accepted

Received or Sent

DAV

Data Valid

Received or Sent

DCL

Device Clear

Received (see PAR. 3.6.3.1.2)