BIT 4886 OPR 051010
1-1
SECTION 1 - INTRODUCTION
1.1
SCOPE OF MANUAL
This manual contains instructions for the installation, operation and maintenance of the BIT
4886 Interface Card manufactured by Kepco, Inc, Flushing, NY, U.S.A.
1.2
GENERAL DESCRIPTION
The Kepco BIT Card Series were designed as an accessory for the Kepco BOP series bipolar
power supplies. The BIT 4886 card makes it possible to control the BOP output by means of
digital input signals via the IEEE 488.2 bus using SCPI commands (see Figure 1-1). The BIT
4886 card acts as an interface between the digital data bus and the BOP, accepting the digital
input data and converting it to an analog signal, which in turn, controls the BOP output. The BIT
4886 provides full talk/listen capability and is fully compliant with the SCPI programming lan-
guage.
At power-up the BIT 4886 is set to local mode, allowing front panel control of the BOP power
Supply. Upon power up the BIT 4886 performs a reset, establishing the voltage and current out-
put levels to be 0 volts and the output state to be off.
The BIT 4886 is a 16-bit interface card which allows either plus or minus voltage or current out-
put at 15 bits of resolution.
Table 1-1 shows which specific revisions of BOP models are compatible with BIT 4886 cards.
1.2.1
MEASUREMENTS
The readback information for BIT 4886 cards is the average of the last 16 measurements. The
measurement average is valid after a time delay which allows the readings to stabilize, plus 320
milliseconds. Issuing a MEAS:VOLT? query before the end of this time delay will retrieve the
instantaneous measured voltage from the analog-to-digital converter. After the delay, the mea-
surement returned is the average of the last 16 measurements of the analog-to-digital convert-
ers.
TABLE 1-1. APPLICABILITY OF BIT 4886 CARDS TO SPECIFIC BOP MODELS
MODEL
REVISION NO.
MODEL
REVISION NO.
BOP 20-5M
2 AND LATER
BOP 50-8M
10 AND LATER
BOP 20-10M
17 AND LATER
BOP 72 3M
10 AND LATER
BOP 20-20M
15 AND LATER
BOP 72-6M
14 AND LATER
BOP 36-6M
19 AND LATER
BOP 100-1M
24 AND LATER
BOP 36-12M
13 AND LATER
BOP 100-2M
15 AND LATER
BOP 50-2M
21 AND LATER
BOP 100-4M
14 AND LATER
BOP 50-4M
13 AND LATER
BOP 200-1M
7 AND LATER
NOTE:
For modification (to accept the BIT 4886 card) of BOP Models with revision numbers that
do not appear in this table, contact Kepco for assistance.
